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bq27510-g3 slusat1a ? march 2013 ? revised november 2015 bq27510-g3 system-side impedance track ? fuel gauge with direct battery connection 1 features 2 applications 1 ? single-series cell li-ion battery fuel gauge ? smartphones, feature phones, and tablets resides on system board ? wearables ? integrated 2.5-vdc ldo ? building automation ? external low-value 10-m sense resistor ? portable medical/industrial handsets ? patented impedance track ? technology ? portable audio ? adjusts for battery aging, self-discharge, ? gaming temperature, and rate changes 3 description ? reports remaining capacity, state-of-charge (soc), and time-to-empty the texas instruments bq27510-g3 system-side li- ion battery fuel gauge is a microcontroller peripheral ? optional smoothing filter that provides fuel gauging for single-cell li-ion battery ? battery state-of-health (aging) estimation packs. the device requires little system ? supports embedded or removable packs microcontroller firmware development. the bq27510- with up to 32-ahr capacity g3 resides on the system ? s main board and manages an embedded battery (non-removable) or a ? accommodates pack swapping with 2 removable battery pack. separate battery profiles the bq27510-g3 uses the patented impedance ? microcontroller peripheral supports: track ? algorithm for fuel gauging, and provides ? 400-khz i 2 c serial interface information such as remaining battery capacity ? 32 bytes of scratch-pad flash nvm (mah), state-of-charge (%), run-time to empty (min.), battery voltage (mv), temperature ( c) and state-of- ? battery low digital output warning health (%). ? configurable soc interrupts battery fuel gauging with the bq27510-g3 requires ? external thermistor, internal sensor, or host- only pack+ (p+), pack ? (p ? ), and optional reported temperature options thermistor (t) connections to a removable battery ? small 12-pin 2.50 mm 4.00 mm son package pack or embedded battery circuit. device information (1) firmware part number package version bq27510-g3 son (12) 4.00 (0x0400) (1) for all available packages, see the orderable addendum at the end of the data sheet. typical application diagram 1 an important notice at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. production data. host system pack- single-cell li-ion battery pack chg dsg temp sense current sense t pack+ voltage sense gpout fets i c 2 ldo reg25 regin vcc data bq27510-g3 power management controller protection ic productfolder sample &buy technical documents tools & software support &community
bq27510-g3 slusat1a ? march 2013 ? revised november 2015 www.ti.com table of contents 7.3 feature description ................................................. 10 1 features .................................................................. 1 7.4 device functional modes ........................................ 10 2 applications ........................................................... 1 7.5 programming ........................................................... 13 3 description ............................................................. 1 8 application and implementation ........................ 17 4 revision history ..................................................... 2 8.1 application information ............................................ 17 5 pin configuration and functions ......................... 3 8.2 typical application ................................................. 17 6 specifications ......................................................... 3 9 power supply recommendations ...................... 20 6.1 absolute maximum ratings ...................................... 3 9.1 power supply decoupling ....................................... 20 6.2 esd ratings .............................................................. 4 10 layout ................................................................... 21 6.3 recommended operating conditions ....................... 4 10.1 layout guidelines ................................................. 21 6.4 thermal information .................................................. 4 10.2 layout example .................................................... 21 6.5 electrical characteristics .......................................... 5 11 device and documentation support ................. 22 6.6 data flash memory characteristics .......................... 6 11.1 device support .................................................... 22 6.7 400-khz i 2 c-compatible interface communication timing requirements ................................................. 6 11.2 documentation support ........................................ 22 6.8 100-khz i 2 c-compatible interface communication 11.3 community resources .......................................... 22 timing requirements ................................................. 6 11.4 trademarks ........................................................... 22 6.9 typical characteristics .............................................. 7 11.5 electrostatic discharge caution ............................ 22 7 detailed description .............................................. 8 11.6 glossary ................................................................ 22 7.1 overview ................................................................... 8 12 mechanical, packaging, and orderable 7.2 functional block diagram ......................................... 9 information ........................................................... 22 4 revision history note: page numbers for previous revisions may differ from page numbers in the current version. changes from original (march 2013) to revision a page ? added esd ratings table, feature description section, device functional modes , application and implementation section, power supply recommendations section, layout section, device and documentation support section, and mechanical, packaging, and orderable information section. ................................................................................................ 1 2 submit documentation feedback copyright ? 2013 ? 2015, texas instruments incorporated product folder links: bq27510-g3
bq27510-g3 www.ti.com slusat1a ? march 2013 ? revised november 2015 5 pin configuration and functions drz package 12-pin son top view pin functions pin type (1) description name no. battery-insertion detection input. power pin for pack thermistor network. thermistor-multiplexer control bi/tout 1 i/o pin. open-drain i/o. use with pull-up resistor > 1m ? (1.8 m ? typical). reg25 2 p 2.5 v output voltage of the internal integrated ldo. regin 3 p regulator input. decouple with 0.1- f ceramic capacitor to vss. bat 4 i cell voltage measurement input. adc input. vcc 5 p processor power input. decouple with 0.1- f ceramic capacitor minimum. vss 6 p device ground analog input pin connected to the internal coulomb counter with a kelvin connection where srp is srp 7 ia nearest the pack ? connection. connect to 5-m to 20-m sense resistor. analog input pin connected to the internal coulomb counter with a kelvin connection where srn is srn 8 ia nearest the vss connection. connect to 5-m to 20-m sense resistor. ts 9 ia pack thermistor voltage sense (use 103at-type thermistor). adc input slave i 2 c serial communications data line for communication with system (master). open-drain i/o. sda 10 i/o use with 10-k ? pull-up resistor (typical). slave i 2 c serial communications clock input line for communication with system (master). open-drain scl 11 i i/o. use with 10-k ? pull-up resistor (typical). general purpose open-drain output. may be configured as battery low, battery good, or to perform gpout 12 o interrupt functionality. (1) i/o = digital input/output; ia = analog input; p = power connection. 6 specifications 6.1 absolute maximum ratings over operating free-air temperature range (unless otherwise noted) (1) min max unit v regin regulator input voltage ? 0.3 24 v v cc supply voltage ? 0.3 2.75 v v iod open-drain i/o pins (sda, scl, gpout) ? 0.3 6 v v bat bat input pin ? 0.3 6 v v i input voltage to all other pins (ts, srp, srn, bi/tout) ? 0.3 v cc + 0.3 v t f functional temperature ? 40 100 c t stg storage temperature ? 65 150 c (1) stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. these are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions . exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. copyright ? 2013 ? 2015, texas instruments incorporated submit documentation feedback 3 product folder links: bq27510-g3 vss srn srp vcc gpout sda scl 1 2 3 4 5 6 12 11 10 9 8 7 ts regin bat bi/tout reg25
bq27510-g3 slusat1a ? march 2013 ? revised november 2015 www.ti.com 6.2 esd ratings value unit human-body model (hbm), per all pins except pin 4 2000 ansi/esda/jedec js-001 (1) pin 4 1500 v (esd) electrostatic discharge v charged-device model (cdm), per jedec specification jesd22- 250 c101 (2) (1) jedec document jep155 states that 500-v hbm allows safe manufacturing with a standard esd control process. (2) jedec document jep157 states that 250-v cdm allows safe manufacturing with a standard esd control process. 6.3 recommended operating conditions t a = 25 c, v cc = 2.5 v (unless otherwise noted) min nom max unit supply voltage no operating restrictions 2.7 5.5 v regin v no flash writes 2.45 2.7 c reg25 external reg25 capacitor c reg25 0.47 f t pucd power up communication delay 250 ms normal operating mode current fuel gauge in normal mode, i cc 103 a i load > sleep current low-power operating mode current fuel gauge in sleep mode. i slp 18 a i load < sleep current low-power operating mode current fuel gauge in sleep+ mode. i slp+ 60 a i load < sleep current hibernate operating mode current fuel gauge in hibernate mode. i hib 4 a i load < hibernate current v ol output voltage low (sda, gpout, bi/tout) i ol = 0.5 ma 0.4 v v oh(pp) output high voltage (gpout) i oh = ? 1 ma v cc ? 0.5 v v oh(od) output high voltage (sda, scl, bi/tout) external pull-up resistor connected to vcc v cc ? 0.5 v input voltage low (sda, scl) ? 0.3 0.6 v il v input voltage low (bi/tout) bat insert check mode active ? 0.3 0.6 input voltage high (sda, scl) 1.2 6 v ih(od) v input voltage high (bi/tout) bat insert check mode active 1.2 6 v a1 input voltage range (ts) v ss ? 0.125 2 v v a2 input voltage range (bat) v ss ? 0.125 5 v v a3 input voltage range (srp, srn) v ss ? 0.125 0.125 v t pucd power-up communication delay 250 ms t a operating free-air temperature ? 40 85 c 6.4 thermal information bq27510-g3 thermal metric (1) drz (son) unit 12 pins r ja junction-to-ambient thermal resistance 64.1 c/w r jc(top) junction-to-case (top) thermal resistance 59.8 c/w r jb junction-to-board thermal resistance 52.7 c/w jt junction-to-top characterization parameter 0.3 c/w jb junction-to-board characterization parameter 28.3 c/w r jc(bot) junction-to-case (bottom) thermal resistance 2.4 c/w (1) for more information about traditional and new thermal metrics, see the semiconductor and ic package thermal metrics application report, spra953 . 4 submit documentation feedback copyright ? 2013 ? 2015, texas instruments incorporated product folder links: bq27510-g3
bq27510-g3 www.ti.com slusat1a ? march 2013 ? revised november 2015 6.5 electrical characteristics t a = 25 c, c reg = 0.47 f, v regin = 3.6 v (unless otherwise noted) parameter test condition min nom max unit 2.5-v ldo (1) 2.7 v v regin 5.5 v, t a = ? 40 c to 85 c 2.4 2.5 2.6 v i out 16ma v reg25 regulator output voltage 2.45 v v regin < 2.7 v (low t a = ? 40 c to 85 c 2.4 v battery), i out 3ma 2.7 v, i out 16 ma t a = ? 40 c to 85 c 280 v do regulator dropout voltage mv 2.45 v, i out 3 ma 50 regulator output change v regin = 3.6 v, i out = 16 ma t a = ? 40 c to 85 c v regtemp 0.3% with temperature v regline line regulation 2.7 v v regin 5.5 v, i out = 16 ma 11 25 mv load regulation 0.2 ma i o ut 3 ma, v regin = 2.45 v 34 40 v regload mv 3 ma i out 16 ma, v regin = 2.7 v 31 i short (2) short circuit current limit v reg25 = 0 v t a = ? 40 c to 85 c 250 ma power-on reset positive-going battery t a = ? 40 c to 85 c v it+ 2.05 2.20 2.31 v voltage input at v cc v hys power-on reset hysteresis t a = ? 40 c to 85 c 45 115 185 mv internal temperature sensor characteristics temperature sensor voltage t a = ? 40 c to 85 c, 2.4 v < v cc < 2.6 v; typical g temp ? 2 mv/ c gain values at t a = 25 c and v cc = 2.5 v internal clock oscillators high frequency oscillator t a = ? 40 c to 85 c, 2.4 v < v cc < 2.6 v; typical f osc 8.389 mhz values at t a = 25 c and v cc = 2.5 v low frequency oscillator t a = ? 40 c to 85 c, 2.4 v < v cc < 2.6 v; typical f losc 32.768 khz values at t a = 25 c and v cc = 2.5 v integrating adc (coulomb counter) characteristics input voltage range, v (srn) v sr = v (srn) ? v (srp) t a = ? 40 c to v sr_in and v (srp) 85 c, 2.4 v < v cc ? 0.125 0.125 v < 2.6 v conversion time single conversion t a = 25 c and v cc t sr_conv 1 s = 2.5 v resolution t a = ? 40 c to 85 c, 2.4 v < v cc < 2.6 v 14 15 bits v sr_os input offset t a = 25 c and v cc = 2.5 v 10 v i nl integral nonlinearity error t a = ? 40 c to 85 c, 2.4 v < v cc < 2.6 v 0.007 0.034 %fsr z sr_in effective input resistance (2) t a = ? 40 c to 85 c, 2.4 v < v cc < 2.6 v 2.5 m i sr_lkg input leakage current (2) t a = ? 40 c to 85 c, 2.4 v < v cc < 2.6 v 0.3 a adc (temperature and cell measurement) characteristics v adc_in input voltage range t a = ? 40 c to 85 c, 2.4 v < v cc < 2.6 v ? 0.2 1 v t adc_conv conversion time t a = ? 40 c to 85 c, 2.4 v < v cc < 2.6 v 125 ms resolution t a = ? 40 c to 85 c, 2.4 v < v cc < 2.6 v 14 15 bits v adc_os input offset t a = 25 c and v cc = 2.5 v 1 mv effective input resistance t a = ? 40 c to 85 c, 2.4 v < v cc < 2.6 v z adc1 8 m (ts) (2) effective input resistance bq27510-g3 not measuring cell t a = ? 40 c to (bat) (2) voltage 85 c, 2.4 v < v cc 8 m < 2.6 v z adc2 bq27510-g3 measuring cell t a = 25 c and v cc 100 k voltage = 2.5 v i adc_lkg input leakage current (2) t a = ? 40 c to 85 c, 2.4 v < v cc < 2.6 v 0.3 a (1) ldo output current, iout, is the sum of internal and external load currents. (2) assured by design. not production tested. copyright ? 2013 ? 2015, texas instruments incorporated submit documentation feedback 5 product folder links: bq27510-g3
bq27510-g3 slusat1a ? march 2013 ? revised november 2015 www.ti.com 6.6 data flash memory characteristics t a = ? 40 c to 85 c, 2.4 v < v cc < 2.6 v; typical values at t a = 25 c and v cc = 2.5 v (unless otherwise noted) parameter test conditions min typ max unit t dr data retention (1) 10 years flash programming write-cycles (1) 20,000 cycles t wordprog) word programming time (1) 2 ms i ccprog) flash-write supply current (1) 5 10 ma (1) assured by design. not production tested. 6.7 400-khz i 2 c-compatible interface communication timing requirements t a = ? 40 c to 85 c, 2.4 v < v cc < 2.6 v; typical values at t a = 25 c and v cc = 2.5 v (unless otherwise noted) parameter test conditions min typ max unit t r scl/sda rise time 300 ns t f scl/sda fall time 300 ns t w(h) scl pulse width (high) 600 ns t w(l) scl pulse width (low) 1.3 s t su(sta) setup for repeated start 600 ns t d(sta) start to first falling edge of scl 600 ns t su(dat) data setup time 100 ns t h(dat) data hold time 0 ns t su(stop) setup time for stop 600 ns t buf bus free time between stop and start 66 s f scl clock frequency 400 khz 6.8 100-khz i 2 c-compatible interface communication timing requirements t a = ? 40 c to 85 c, 2.4 v < v cc < 2.6 v; typical values at t a = 25 c and v cc = 2.5 v (unless otherwise noted) parameter test conditions min typ max unit t r scl/sda rise time 1 s t f scl/sda fall time 300 ns t w(h) scl pulse width (high) 4 s t w(l) scl pulse width (low) 4.7 s t su(sta) setup for repeated start 4.7 s t d(sta) start to first falling edge of scl 4 s t su(dat) data setup time 250 ns receive mode 0 t h(dat) data hold time ns transmit mode 300 t su(stop) setup time for stop 4 s t buf bus free time between stop and start 4.7 s f scl clock frequency 10 100 khz t buserr bus error timeout 17.3 21.2 s 6 submit documentation feedback copyright ? 2013 ? 2015, texas instruments incorporated product folder links: bq27510-g3
bq27510-g3 www.ti.com slusat1a ? march 2013 ? revised november 2015 figure 1. i 2 c-compatible interface timing diagram 6.9 typical characteristics figure 2. reg25 vs. temperature figure 3. low frequency oscillator vs. temperature figure 4. high frequency oscillator vs. temperature copyright ? 2013 ? 2015, texas instruments incorporated submit documentation feedback 7 product folder links: bq27510-g3 t su(sta) scl sda t w(h) t w(l) t f t r t (buf) t r t d(sta) repeated start t h(dat) t su(dat) t f t su(stop) stop start temperature ( q c) h f o (m h z ) -40 -20 0 20 40 60 80 100 8.365 8.37 8.375 8.38 8.385 8.39 8.395 8.4 d003 temperature ( q c) r e g 2 5 o u tp u t (v ) -40 -20 0 20 40 60 80 100 2.44 2.46 2.48 2.5 2.52 2.54 2.56 2.58 d001 i out = 16 ma, regin = 5 v i out = 3 ma, regin = 2.7 v temperature ( q c) l f o (kh z ) -40 -20 0 20 40 60 80 100 32.45 32.5 32.55 32.6 32.65 32.7 32.75 32.8 d002
bq27510-g3 slusat1a ? march 2013 ? revised november 2015 www.ti.com 7 detailed description 7.1 overview the bq27510-g3 fuel gauge accurately predicts the battery capacity and other operational characteristics of a single li-based rechargeable cell. it can be interrogated by a system processor to provide cell information, such as time-to-empty (tte) and state-of-charge (soc) as well as soc interrupt signal to the host. information is accessed through a series of commands, called standard commands . further capabilities are provided by the additional extended commands set. both sets of commands, indicated by the general format command( ) , read and write information contained within the device control and status registers, as well as its data flash locations. commands are sent from system to gauge using the i 2 c serial communications engine, and can be executed during application development, system manufacture, or end-equipment operation. cell information is stored in the device in non-volatile flash memory. many of these data flash locations are accessible during application development. they cannot, generally, be accessed directly during end-equipment operation. access to these locations is achieved by either use of the fuel gauge companion evaluation software, through individual commands, or through a sequence of data-flash-access commands. to access a desired data flash location, the correct data flash subclass and offset must be known. the key to the fuel gauge high-accuracy gas gauging prediction is texas instruments proprietary impedance track ? algorithm. this algorithm uses cell measurements, characteristics, and properties to create state-of- charge predictions that can achieve less than 1% error across a wide variety of operating conditions and over the lifetime of the battery. the fuel gauge measures charge and discharge activity by monitoring the voltage across a small-value series sense resistor (5 m ? to 20 m ? , typical) located between the system v ss and the battery pack ? terminal. when a cell is attached to the device, cell impedance is learned, based on cell current, cell open-circuit voltage (ocv), and cell voltage under loading conditions. the external temperature sensing is optimized with the use of a high-accuracy negative temperature coefficient (ntc) thermistor with r25 = 10.0 k ? 1%. b25/85 = 3435 k 1% (such as semitec ntc 103at). alternatively, the fuel gauge can also be configured to use its internal temperature sensor or receive temperature data from the host processor. when an external thermistor is used, a 18.2-k pull-up resistor between bi/tout and ts pins is also required. the fuel gauge uses temperature to monitor the battery-pack environment, which is used for fuel gauging and cell protection functionality. to minimize power consumption, the fuel gauge has several power modes: normal, sleep, hibernate, and bat insert check. the fuel gauge passes automatically between these modes, depending upon the occurrence of specific events, though a system processor can initiate some of these modes directly. for complete operational details, refer to the bq27510-g3 technical reference manual, bq27510-g3 system- side impedance track ? fuel gauge with integrated ldo , sluua97 . table 1. formatting conventions used in this document information type formatting convention example commands italics with parentheses and no breaking spaces remainingcapacity( ) command nvm data italics , bold , and breaking spaces design capacity data register bits and flags brackets and italics [tda] bit nvm data bits brackets, italics , and bold [led1] bit modes and states all capitals unsealed mode 8 submit documentation feedback copyright ? 2013 ? 2015, texas instruments incorporated product folder links: bq27510-g3
bq27510-g3 www.ti.com slusat1a ? march 2013 ? revised november 2015 7.2 functional block diagram copyright ? 2013 ? 2015, texas instruments incorporated submit documentation feedback 9 product folder links: bq27510-g3 regin bat vcc ts srn srp gpout sda vss scl mux 4r data flash ldo data sram cc adc 2.5 v r internal temp sensor wake comparator instruction flash instruction rom i 2 c slave engine cpu 22 22 8 8 hfo lfo gp timer and pwm i/o controller wake and watchdog timer hfo hfo/128 hfo/128 hfo/4 por bi/tout reg25
bq27510-g3 slusat1a ? march 2013 ? revised november 2015 www.ti.com 7.3 feature description the fuel gauge measures the cell voltage, temperature, and current to determine battery soc. the fuel gauge monitors charge and discharge activity by sensing the voltage across a small-value (5 m to 20 m typical) resistor between the srp and srn pins and in series with the cell. by integrating charge passing through the battery, the battery ? s soc is adjusted during battery charge or discharge. the total battery capacity is found by comparing states of charge before and after applying the load with the amount of charge passed. when an application load is applied, the impedance of the cell is measured by comparing the ocv obtained from a predefined function for present soc with the measured voltage under load. measurements of ocv and charge integration determine chemical state of charge and chemical capacity (qmax). the initial qmax values are taken from a cell manufacturers' data sheet multiplied by the number of parallel cells. it is also used for the value in design capacity . the fuel gauge acquires and updates the batteryimpedance profile during normal battery usage. it uses this profile, along with soc and the qmax value, to determine fullchargecapacity() and stateofcharge() , specifically for the present load and temperature. fullchargecapacity() is reported as capacity available from a fully charged battery under the present load and temperature until voltage() reaches the terminate voltage . nominalavailablecapacity() and fullavailablecapacity() are the uncompensated (no or light load) versions of remainingcapacity() and fullchargecapacity() respectively. the fuel gauge has two flags accessed by the flags() function that warns when the battery ? s soc has fallen to critical levels. when stateofcharge() falls below the first capacity threshold, specified in soc1 set threshold , the [soc1] (state of charge initial) flag is set. the flag is cleared once stateofcharge() rises above soc1 clear threshold . the fuel gauge ? s gpout pin puts out 3 pulses 10ms wide and in 10ms intervals whenever the soc1 flag is set. this flag is enabled when rmc_ind bit in operation configuration b is set. this behavior also applies to the [socf] (state of charge final) flag. when voltage( ) falls below the system shut down threshold voltage, sysdown set volt threshold , the [sysdown] flag is set, serving as a final warning to shut down the system. the gpout also signals. when voltage( ) rises above sysdown clear voltage and the [sysdown] flag has already been set, the [sysdown] flag is cleared. the gpout also signals such change. all units are in mv. additional details are found in the bq27510-g3 technical reference manual, bq27510-g3 system-side impedance track ? fuel gauge with integrated ldo , sluua97 . 7.4 device functional modes 7.4.1 power modes the fuel gauge has different power modes: bat insert check, normal, snooze, sleep, and hibernate. in normal mode, the fuel gauge is fully powered and can execute any allowable task. in snooze mode, both low-frequency and high-frequency oscillators are active. although the snooze mode has higher current consumption than the sleep mode, it is also a reduced-power mode. in sleep mode, the fuel gauge turns off the high-frequency oscillator and exists in a reduced-power state, periodically taking measurements and performing calculations. in hibernate mode, the fuel gauge is in a low-power state, but can be woken up by communication or certain io activity. finally, the bat insert check mode is a powered up, but low-power halted, state, where the fuel gauge resides when no battery is inserted into the system. figure 5 and figure 6 show the relationship between these modes. 10 submit documentation feedback copyright ? 2013 ? 2015, texas instruments incorporated product folder links: bq27510-g3
bq27510-g3 www.ti.com slusat1a ? march 2013 ? revised november 2015 device functional modes (continued) figure 5. power mode diagram for system shutdown copyright ? 2013 ? 2015, texas instruments incorporated submit documentation feedback 11 product folder links: bq27510-g3 system shutdown hibernate disable all bq27510 subcircuits except gpio negate bat_gd wait_hibernate fuel gauging and data updated every 20 seconds. unchanged. bat_gd wakeup from hibernate communication activity and comm address is not for bq27510 exit from wait_hibernate cell relaxed and averagecurrent () < or cell relaxed and v < hibernate current hibernate voltage cell to sleep por bat insert check check for battery insertion from halt state. no gauging normal fuel gauging and data updated every second. entry to normal [bat_det] = 1 flags exit from wait_hibernate host must set = 0 and control_status [hibernate] v < cell hibernate voltage exit from sleep host has set = 1 or control_status [hibernate] v < cell hibernate voltage flags [bat_det] = 0 exit from normal [bat_det] = 0 flags exit from sleep [bat_det] = 0 flags exit from hibernate battery removed exit from hibernate communication activity and comm address is for bq27510 = 0 recommend host also set = 0 bq27510 clears control_status [hibernate] control_status [hebernate]
bq27510-g3 slusat1a ? march 2013 ? revised november 2015 www.ti.com device functional modes (continued) figure 6. power mode diagram for system sleep 12 submit documentation feedback copyright ? 2013 ? 2015, texas instruments incorporated product folder links: bq27510-g3 por bat insert check check for battery insertion from halt state. no gauging system sleep snooze sleep fuel gauging and data updated every 20 seconds. both lfo and hfo are on. entry to sleep [snooze] = 0 control_status exit from hibernate battery removed normal fuel gauging and data updated every second exit from hibernate communication activity and comm address is for bq27510 = 0 recommend host also set = 0 bq27510 clears control_status [hibernate] control_status [hebernate] entry to normal [bat_det] = 1 flags flags [bat_det] = 0 fuel gauging and data updated every 20 seconds. (lfo on and hfo off) exit from sleep host has set = 1 or control_status [hibernate] v < cell hibernate voltage to wait_hibernate entry to snooze [snooze] = 1 control_status exit from sleep > or current is detected above averagecurrent ( ) sleep current wake exit from snooze any communication to the gauge or > or current is detected above averagecurrent ( ) sleep current wake exit from normal [bat_det] = 0 flags exit from wait_hibernate host must set = 0 and control_status [hibernate] v < cell hibernate voltage entry to snooze = 1 and = 1] operation configuration [sleep] control_status [snooze] and averagecurrent ( ) < sleep current entry to sleep = 1 and = 0] operation configuration [sleep] control_status [snooze] and averagecurrent ( ) < sleep current exit from sleep [bat_det] = 0 flags
bq27510-g3 www.ti.com slusat1a ? march 2013 ? revised november 2015 7.5 programming 7.5.1 standard data commands the bq27510-g3 fuel gauge uses a series of 2-byte standard commands to enable system reading and writing of battery information. each standard command has an associated command-code pair, as indicated in table 2 . because each command consists of two bytes of data, two consecutive i 2 c transmissions must be executed both to initiate the command function, and to read or write the corresponding two bytes of data. additional options for transferring data are described in communications . standard commands are accessible in normal operation. read and write permissions depend on the active access mode, sealed or unsealed. additional details are found in the bq27510-g3 technical reference manual , sluua97 . table 2. standard commands name command code unit sealed access control( ) 0x00 / 0x01 n/a r/w atrate( ) 0x02 / 0x03 ma r/w atratetimetoempty( ) 0x04 / 0x05 minutes r temperature( ) 0x06 / 0x07 0.1 k r/w voltage( ) 0x08 / 0x09 mv r flags( ) 0x0a / 0x0b n/a r nominalavailablecapacity( ) 0x0c / 0x0d mah r fullavailablecapacity( ) 0x0e / 0x0f mah r remainingcapacity( ) 0x10 / 0x11 mah r fullchargecapacity( ) 0x12 / 0x13 mah r averagecurrent( ) 0x14 / 0x15 ma r timetoempty( ) 0x16 / 0x17 minutes r standbycurrent( ) 0x18 / 0x19 ma r standbytimetoempty( ) 0x1a/ 0x1b minutes r stateofhealth( ) 0x1c / 0x1d % / num r cyclecount( ) 0x1e/ 0x1f num r stateofcharge( ) 0x20/ 0x21 % r nstantaneouscurrent( ) 0x22 / 0x23 ma r nternaltemperature( ) 0x28 / 0x29 0.1 k r resistancescale( ) 0x2a / 0x2b r operationconfiguration( ) 0x2c/ 0x2d n/a r designcapacity( ) 0x2e / 0x2f mah r copyright ? 2013 ? 2015, texas instruments incorporated submit documentation feedback 13 product folder links: bq27510-g3
bq27510-g3 slusat1a ? march 2013 ? revised november 2015 www.ti.com 7.5.1.1 control( ): 0x00/0x01 issuing a control( ) command requires a subsequent 2-byte subcommand. these additional bytes specify the particular control function desired. the control( ) command allows the system to control specific features of the fuel gauge during normal operation and additional features when the device is in different access modes, as described in table 3 . additional details are found in the bq27510-g3 technical reference manual , sluua97 . table 3. control( ) subcommands cntl function cntl data sealed access description control_status 0x0000 yes reports the status of df checksum, hibernate, it, and so forth device_type 0x0001 yes reports the device type (for example: 0x0520) fw_version 0x0002 yes reports the firmware version on the device type prev_macwrite 0x0007 yes returns previous control( ) subcommand code chem_id 0x0008 yes reports the chemical identifier of the impedance track ? configuration ocv_cmd 0x000c yes requests the fuel gauge to take an ocv measurement bat_insert 0x000d yes forces flags( ) [bat_det] bit set when opconfig b [bie] = 0 bat_remove 0x000e yes forces flags( ) [bat_det] bit clear when opconfig b [bie] = 0 set_hibernate 0x0011 yes forces control_status [hibernate] to 1 clear_hibernate 0x0012 yes forces control_status [hibernate] to 0 set_sleep+ 0x0013 yes forces control_status [snooze] to 1 clear_sleep+ 0x0014 yes forces control_status [snooze] to 0 df_version 0x001f yes returns the data flash version code sealed 0x0020 no places the fuel gauge in sealed access mode it_enable 0x0021 no enables the impedance track ? (it) algorithm reset 0x0041 no forces a full reset of the fuel gauge 7.5.2 communications 7.5.2.1 i 2 c interface the bq27510-g3 fuel gauge supports the standard i 2 c read, incremental read, quick read, one byte write, and incremental write functions. the 7-bit device address (addr) is the most significant 7 bits of the hex address and is fixed as 1010101. the first 8-bits of the i 2 c protocol is, therefore, 0xaa or 0xab for write or read, respectively. figure 7. i 2 c read, incremental read, quick read, one byte write, and incremental write functions 14 submit documentation feedback copyright ? 2013 ? 2015, texas instruments incorporated product folder links: bq27510-g3 host generated a a s 0 addr[6:0] cmd [7:0] sr 1 addr[6:0] a data [7:0] a data [7:0] p n . . . (d) incremental read a a s 0 addr[6:0] cmd [7:0] sr 1 addr[6:0] a data [7:0] p n (c) 1- byte read a a s a 0 p addr[6:0] cmd [7:0] data [7:0] (a) 1-byte write (b) quick read s 1 addr[6:0] a data [7:0] p n gauge generated . . . a a s a 0 p addr[6:0] cmd[7:0] data [7:0] data [7:0] a a (e) incremental write (s = start , sr = repeated start , a = acknowledge , n = no acknowledge , and p = stop).
bq27510-g3 www.ti.com slusat1a ? march 2013 ? revised november 2015 the ? quick read ? returns data at the address indicated by the address pointer. the address pointer, a register internal to the i 2 c communication engine, increments whenever data is acknowledged by the fuel gauge or the i 2 c master. ? quick writes ? function in the same manner and are a convenient means of sending multiple bytes to consecutive command locations (such as two-byte commands that require two bytes of data) the following command sequences are not supported: attempt to write a read-only address (nack after data sent by master): figure 8. invalid write attempt to read an address above 0x6b (nack command): figure 9. invalid read 7.5.2.2 i 2 c time out the i 2 c engine releases both sda and scl if the i 2 c bus is held low for 2 seconds. if the fuel gauge was holding the lines, releasing them frees them for the master to drive the lines. if an external condition is holding either of the lines low, the i 2 c engine enters the low-power sleep mode. 7.5.2.3 i 2 c command waiting time to ensure proper operation at 400 khz, a t (buf) 66 s bus free waiting time must be inserted between all packets addressed to the fuel gauge. in addition, if the scl clock frequency (f scl ) is > 100 khz, use individual 1- byte write commands for proper data flow control. the following diagram shows the standard waiting time required between issuing the control subcommand the reading the status result. for read-write standard command, a minimum of 2 seconds is required to get the result updated. for read-only standard commands, there is no waiting time required, but the host should not issue all standard commands more than two times per second. otherwise, the fuel gauge could result in a reset issue due to the expiration of the watchdog timer. figure 10. standard i 2 c command waiting time required copyright ? 2013 ? 2015, texas instruments incorporated submit documentation feedback 15 product folder links: bq27510-g3 a a s 0 addr [6:0] cmd [7:0] sr 1 addr [6:0] a data [7:0] a data [7:0] p n a a s a 0 p addr [6:0] cmd [7:0] data [7:0] data [7:0] a 66 s m a a s 0 addr [6:0] cmd [7:0] sr 1 addr [6:0] a data [7:0] a data [7:0] a data [7:0] a data [7:0] p n waiting time inserted between incremental 2-byte write packet for a subcommand and reading results (acceptable for 100 khz) f scl waiting time inserted after incremental read 66 s m 66 s m a a s 0 addr [6:0] cmd [7:0] sr 1 addr [6:0] a data [7:0] a data [7:0] p n a a s a 0 p addr [6:0] cmd [7:0] data [7:0] 66 s m waiting time inserted between two 1-byte write packets for a subcommand and reading results (required for 100 khz < f 400 khz) scl 66 s m a a s a 0 p addr [6:0] cmd [7:0] data [7:0] 66 s m
bq27510-g3 slusat1a ? march 2013 ? revised november 2015 www.ti.com 7.5.2.4 i 2 c clock stretching a clock stretch can occur during all modes of fuel gauge operation. in sleep and hibernate modes, a short clock stretch occurs on all i 2 c traffic as the device must wake-up to process the packet. in the other modes (bat insert check, normal) clock stretching only occurs for packets addressed for the fuel gauge. the majority of clock stretch periods are small as the i 2 c interface performs normal data flow control. however, less frequent yet more significant clock stretch periods may occur as blocks of data flash are updated. the following table summarizes the approximate clock stretch duration for various fuel gauge operating conditions. table 4. approximate clock stretch duration gauging approximate operating condition or comment mode duration sleep clock stretch occurs at the beginning of all traffic as the device wakes up. 4 ms hibernate bat insert clock stretch occurs within the packet for flow control (after a start bit, ack or first data bit). 4 ms check, normal ra table data flash updates. 24 ms normal data flash block writes. 72 ms restored data flash block write after loss of power. 116 ms end of discharge ra table data flash update. 144 ms 16 submit documentation feedback copyright ? 2013 ? 2015, texas instruments incorporated product folder links: bq27510-g3
bq27510-g3 www.ti.com slusat1a ? march 2013 ? revised november 2015 8 application and implementation note information in the following applications sections is not part of the ti component specification, and ti does not warrant its accuracy or completeness. ti ? s customers are responsible for determining suitability of components for their purposes. customers should validate and test their design implementation to confirm system functionality. 8.1 application information the bq27510-g3 system-side li-ion battery fuel gauge is a microcontroller peripheral that provides fuel gauging for single-cell li-ion battery packs. the device requires little system microcontroller firmware development. the fuel resides on the main board of the system and manages an embedded battery (non-removable) or a up to 32000-mahr capacity removable battery pack.to allow for optimal performance in the end application, special considerations must be taken to ensure minimization of measurement error through proper printed circuit board (pcb) board layout. such requirements are detailed in design requirements . 8.2 typical application figure 11. bq27510-g3 typical application 8.2.1 design requirements several key parameters must be updated to align with a given application's battery characteristics. for highest accuracy gauging, it is important to follow-up this initial configuration with a learning cycle to optimize resistance and maximum chemical capacity (qmax) values prior to sealing and shipping systems to the field. successful and accurate configuration of the fuel gauge for a target application can be used as the basis for creating a "golden" gas gauge (.fs) file that can be written to all gauges, assuming identical pack design and li-ion cell origin (chemistry, lot, and so on). calibration data is included as part of this golden gg file to cut down on system production time. if going this route, it is recommended to average the voltage and current measurement calibration data from a large sample size and use these in the golden file. table 5 , key data flash parameters for configuration , shows the items that should be configured to achieve reliable protection and accurate gauging with minimal initial configuration. copyright ? 2013 ? 2015, texas instruments incorporated submit documentation feedback 17 product folder links: bq27510-g3 bq27510drz gpout gpout
bq27510-g3 slusat1a ? march 2013 ? revised november 2015 www.ti.com typical application (continued) table 5. key data flash parameters for configuration name default unit recommended setting set based on the nominal pack capacity as interpreted from cell manufacturer's design capacity 1000 mah datasheet. if multiple parallel cells are used, should be set to n cell capacity. set to 10 to convert all power values to cwh or to 1 for mwh. design energy design energy scale 1 - is divided by this value. set to desired runtime remaining (in seconds / 3600) typical applied load reserve capacity-mah 0 mah between reporting 0% soc and reaching terminate voltage , if needed. should be configured using ti-supplied battery management studio software. default open-circuit voltage and resistance tables are also updated in chem id 0100 hex conjunction with this step. do not attempt to manually update reported device chemistry as this does not change all chemistry information! always update chemistry using the appropriate software tool (that is, bqstudio). load mode 1 - set to applicable load model, 0 for constant current or 1 for constant power. load select 1 - set to load profile which most closely matches typical system load. set to initial configured value for design capacity. the gauge will update this qmax cell 0 1000 mah parameter automatically after the optimization cycle and for every regular qmax update thereafter. set to nominal cell voltage for a fully charged cell. the gauge will update this cell0 v at chg term 4200 mv parameter automatically each time full charge termination is detected. set to empty point reference of battery based on system needs. typical is terminate voltage 3200 mv between 3000 and 3200 mv. ra max delta 44 m set to 15% of cell0 r_a 4 resistance after an optimization cycle is completed. set based on nominal charge voltage for the battery in normal conditions charging voltage 4200 mv (25 c, etc). used as the reference point for offsetting by taper voltage for full charge termination detection. set to the nominal taper current of the charger + taper current tolerance to taper current 100 ma ensure that the gauge will reliably detect charge termination. sets the voltage window for qualifying full charge termination. can be set taper voltage 100 mv tighter to avoid or wider to ensure possibility of reporting 100% soc in outer jeita temperature ranges that use derated charging voltage. sets threshold for gauge detecting battery discharge. should be set lower than dsg current threshold 60 ma minimal system load expected in the application and higher than quit current . sets the threshold for detecting battery charge. can be set higher or lower chg current threshold 75 ma depending on typical trickle charge current used. also should be set higher than quit current . sets threshold for gauge detecting battery relaxation. can be set higher or quit current 40 ma lower depending on typical standby current and exhibited in the end system. current profile used in capacity simulations at onset of discharge or at all times avg i last run ? 299 ma if load select = 0. should be set to nominal system load. is automatically updated by the gauge every cycle. power profile used in capacity simulations at onset of discharge or at all times avg p last run ? 1131 mw if load select = 0. should be set to nominal system power. is automatically updated by the gauge every cycle. sets the threshold at which the fuel gauge enters sleep mode. take care in sleep current 10 ma setting above typical standby currents else entry to sleep may be unintentionally blocked. calibrate this parameter using ti-supplied bqstudio software and calibration cc gain 10 mohms procedure in the trm. determines conversion of coulomb counter measured sense resistor voltage to current. calibrate this parameter using ti-supplied bqstudio software and calibration cc delta 10 mohms procedure in the trm. determines conversion of coulomb counter measured sense resistor voltage to passed charge. calibrate this parameter using ti-supplied bqstudio software and calibration board offset 0 counts procedure in the trm. determines native offset of the printed circuit board parasitics that should be removed from conversions. 18 submit documentation feedback copyright ? 2013 ? 2015, texas instruments incorporated product folder links: bq27510-g3
bq27510-g3 www.ti.com slusat1a ? march 2013 ? revised november 2015 typical application (continued) table 5. key data flash parameters for configuration (continued) name default unit recommended setting calibrate this parameter using ti-supplied bqstudio software and calibration procedure in the trm. determines voltage offset between cell tab and adc pack v offset 0 mv input node to incorporate back into or remove from measurement, depending on polarity. 8.2.2 detailed design procedure 8.2.2.1 bat voltage sense input a ceramic capacitor at the input to the bat pin is used to bypass ac voltage ripple to ground, greatly reducing its influence on battery voltage measurements. it proves most effective in applications with load profiles that exhibit high-frequency current pulses (that is, cell phones) but is recommended for use in all applications to reduce noise on this sensitive high-impedance measurement node. 8.2.2.2 srp and srn current sense inputs the filter network at the input to the coulomb counter is intended to improve differential mode rejection of voltage measured across the sense resistor. these components should be placed as close as possible to the coulomb counter inputs and the routing of the differential traces length-matched to best minimize impedance mismatch- induced measurement errors. 8.2.2.3 sense resistor selection any variation encountered in the resistance present between the srp and srn pins of the fuel gauge will affect the resulting differential voltage, and derived current, it senses. as such, it is recommended to select a sense resistor with minimal tolerance and temperature coefficient of resistance (tcr) characteristics. the standard recommendation based on best compromise between performance and price is a 1% tolerance, 100 ppm drift sense resistor with a 1-w power rating. 8.2.2.4 ts temperature sense input similar to the bat pin, a ceramic decoupling capacitor for the ts pin is used to bypass ac voltage ripple away from the high-impedance adc input, minimizing measurement error. another helpful advantage is that the capacitor provides additional esd protection since the ts input to system may be accessible in systems that use removable battery packs. it should be placed as close as possible to the respective input pin for optimal filtering performance. 8.2.2.5 thermistor selection the fuel gauge temperature sensing circuitry is designed to work with a negative temperature coefficient-type (ntc) thermistor with a characteristic 10-k resistance at room temperature (25 c). the default curve-fitting coefficients configured in the fuel gauge specifically assume a 103at-2 type thermistor profile and so that is the default recommendation for thermistor selection purposes. moving to a separate thermistor resistance profile (for example, jt-2 or others) requires an update to the default thermistor coefficients in data flash to ensure highest accuracy temperature measurement performance. 8.2.2.6 regin power supply input filtering a ceramic capacitor is placed at the input to the fuel gauge internal ldo to increase power supply rejection (psr) and improve effective line regulation. it ensures that voltage ripple is rejected to ground instead of coupling into the internal supply rails of the fuel gauge. 8.2.2.7 v cc ldo output filtering a ceramic capacitor is also needed at the output of the internal ldo to provide a current reservoir for fuel gauge load peaks during high peripheral utilization. it acts to stabilize the regulator output and reduce core voltage ripple inside of the fuel gauge. copyright ? 2013 ? 2015, texas instruments incorporated submit documentation feedback 19 product folder links: bq27510-g3
bq27510-g3 slusat1a ? march 2013 ? revised november 2015 www.ti.com 8.2.3 application curves figure 12. reg25 vs. temperature figure 13. low frequency oscillator vs. temperature figure 14. high frequency oscillator vs. temperature 9 power supply recommendations 9.1 power supply decoupling both the regin input pin and the v cc output pin require low equivalent series resistance (esr) ceramic capacitors placed as closely as possible to the respective pins to optimize ripple rejection and provide a stable and dependable power rail that is resilient to line transients. a 0.1- f capacitor at the regin and a 1- f capacitor at v cc will suffice for satisfactory device performance. 20 submit documentation feedback copyright ? 2013 ? 2015, texas instruments incorporated product folder links: bq27510-g3 temperature ( q c) h f o (m h z ) -40 -20 0 20 40 60 80 100 8.365 8.37 8.375 8.38 8.385 8.39 8.395 8.4 d003 temperature ( q c) r e g 2 5 o u tp u t (v ) -40 -20 0 20 40 60 80 100 2.44 2.46 2.48 2.5 2.52 2.54 2.56 2.58 d001 i out = 16 ma, regin = 5 v i out = 3 ma, regin = 2.7 v temperature ( q c) l f o (kh z ) -40 -20 0 20 40 60 80 100 32.45 32.5 32.55 32.6 32.65 32.7 32.75 32.8 d002
bq27510-g3 www.ti.com slusat1a ? march 2013 ? revised november 2015 10 layout 10.1 layout guidelines 10.1.1 sense resistor connections kelvin connections at the sense resistor are just as critical as those for the battery terminals themselves. the differential traces should be connected at the inside of the sense resistor pads and not anywhere along the high- current trace path to prevent false increases to measured current that could result when measuring between the sum of the sense resistor and trace resistance between the tap points. in addition, the routing of these leads from the sense resistor to the input filter network and finally into the srp and srn pins needs to be as closely matched in length as possible else additional measurement offset could occur. it is further recommended to add copper trace or pour-based "guard rings" around the perimeter of the filter network and coulomb counter inputs to shield these sensitive pins from radiated emi into the sense nodes. this prevents differential voltage shifts that could be interpreted as real current change to the fuel gauge. all of the filter components need to be placed as close as possible to the coulomb counter input pins. 10.1.2 thermistor connections the thermistor sense input should include a ceramic bypass capacitor placed as close to the ts input pin as possible. the capacitor helps to filter measurements of any stray transients as the voltage bias circuit pulses periodically during temperature sensing windows. 10.1.3 high-current and low-current path separation for best possible noise performance, it is extremely important to separate the low-current and high-current loops to different areas of the board layout. the fuel gauge and all support components should be situated on one side of the boards and tap off of the high-current loop (for measurement purposes) at the sense resistor. routing the low-current ground around instead of under high-current traces will further help to improve noise rejection. 10.2 layout example figure 15. bq27510-g3 board layout copyright ? 2013 ? 2015, texas instruments incorporated submit documentation feedback 21 product folder links: bq27510-g3 c v cc use copper pours for battery power path to minimize ir losses place capacitors close to gauge ic. trace to pin and vss should be short via connects to power ground kelvin connect bat sense line right at positive battery terminal kelvin connect srp and srn connections right at rsense terminals r esd 3 r esd 5 r esd 4 r esd4 use short and wide traces to minimize inductance scl sda star ground right at pack- for esd return path bi/ tout reg25 regin bat vcc vss gpout scl sda ts srn srp c bat c regin gpout 10m ? 1% packp packn battery power connection to system therm bi/tout ground return to system r1 r2
bq27510-g3 slusat1a ? march 2013 ? revised november 2015 www.ti.com 11 device and documentation support 11.1 device support 11.1.1 third-party products disclaimer ti's publication of information regarding third-party products or services does not constitute an endorsement regarding the suitability of such products or services or a warranty, representation or endorsement of such products or services, either alone or in combination with any ti product or service. 11.2 documentation support 11.2.1 related documentation for related documentation see the following: ? bq27510-g3 technical reference manual, bq27510-g3 system-side impedance track ? fuel gauge with integrated ldo, sluua97 11.3 community resources the following links connect to ti community resources. linked contents are provided "as is" by the respective contributors. they do not constitute ti specifications and do not necessarily reflect ti's views; see ti's terms of use . ti e2e ? online community ti's engineer-to-engineer (e2e) community. created to foster collaboration among engineers. at e2e.ti.com, you can ask questions, share knowledge, explore ideas and help solve problems with fellow engineers. design support ti's design support quickly find helpful e2e forums along with design support tools and contact information for technical support. 11.4 trademarks impedance track, e2e are trademarks of texas instruments. all other trademarks are the property of their respective owners. 11.5 electrostatic discharge caution these devices have limited built-in esd protection. the leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the mos gates. 11.6 glossary slyz022 ? ti glossary . this glossary lists and explains terms, acronyms, and definitions. 12 mechanical, packaging, and orderable information the following pages include mechanical, packaging, and orderable information. this information is the most current data available for the designated devices. this data is subject to change without notice and revision of this document. for browser-based versions of this data sheet, refer to the left-hand navigation. 22 submit documentation feedback copyright ? 2013 ? 2015, texas instruments incorporated product folder links: bq27510-g3
package option addendum www.ti.com 29-oct-2015 addendum-page 1 packaging information orderable device status (1) package type package drawing pins package qty eco plan (2) lead/ball finish (6) msl peak temp (3) op temp (c) device marking (4/5) samples BQ27510DRZR-G3 active son drz 12 3000 green (rohs & no sb/br) cu nipdau level-2-260c-1 year -40 to 85 bq 7510 bq27510drzt-g3 active son drz 12 250 green (rohs & no sb/br) cu nipdau level-2-260c-1 year -40 to 85 bq 7510 (1) the marketing status values are defined as follows: active: product device recommended for new designs. lifebuy: ti has announced that the device will be discontinued, and a lifetime-buy period is in effect. nrnd: not recommended for new designs. device is in production to support existing customers, but ti does not recommend using this part in a new design. preview: device has been announced but is not in production. samples may or may not be available. obsolete: ti has discontinued the production of the device. (2) eco plan - the planned eco-friendly classification: pb-free (rohs), pb-free (rohs exempt), or green (rohs & no sb/br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. tbd: the pb-free/green conversion plan has not been defined. pb-free (rohs): ti's terms "lead-free" or "pb-free" mean semiconductor products that are compatible with the current rohs requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. where designed to be soldered at high temperatures, ti pb-free products are suitable for use in specified lead-free processes. pb-free (rohs exempt): this component has a rohs exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. the component is otherwise considered pb-free (rohs compatible) as defined above. green (rohs & no sb/br): ti defines "green" to mean pb-free (rohs compatible), and free of bromine (br) and antimony (sb) based flame retardants (br or sb do not exceed 0.1% by weight in homogeneous material) (3) msl, peak temp. - the moisture sensitivity level rating according to the jedec industry standard classifications, and peak solder temperature. (4) there may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) multiple device markings will be inside parentheses. only one device marking contained in parentheses and separated by a "~" will appear on a device. if a line is indented then it is a continuation of the previous line and the two combined represent the entire device marking for that device. (6) lead/ball finish - orderable devices may have multiple material finish options. finish options are separated by a vertical ruled line. lead/ball finish values may wrap to two lines if the finish value exceeds the maximum column width. important information and disclaimer: the information provided on this page represents ti's knowledge and belief as of the date that it is provided. ti bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. efforts are underway to better integrate information from third parties. ti has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. ti and ti suppliers consider certain information to be proprietary, and thus cas numbers and other limited information may not be available for release.
package option addendum www.ti.com 29-oct-2015 addendum-page 2 in no event shall ti's liability arising out of such information exceed the total purchase price of the ti part(s) at issue in this document sold by ti to customer on an annual basis.
tape and reel information *all dimensions are nominal device package type package drawing pins spq reel diameter (mm) reel width w1 (mm) a0 (mm) b0 (mm) k0 (mm) p1 (mm) w (mm) pin1 quadrant BQ27510DRZR-G3 son drz 12 3000 330.0 12.4 2.8 4.3 1.2 4.0 12.0 q2 BQ27510DRZR-G3 son drz 12 3000 330.0 12.4 2.8 4.3 1.2 4.0 12.0 q2 bq27510drzt-g3 son drz 12 250 180.0 12.4 2.8 4.3 1.2 4.0 12.0 q2 package materials information www.ti.com 29-oct-2015 pack materials-page 1
*all dimensions are nominal device package type package drawing pins spq length (mm) width (mm) height (mm) BQ27510DRZR-G3 son drz 12 3000 338.1 338.1 20.6 BQ27510DRZR-G3 son drz 12 3000 367.0 367.0 35.0 bq27510drzt-g3 son drz 12 250 210.0 185.0 35.0 package materials information www.ti.com 29-oct-2015 pack materials-page 2

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