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rej03f0237-0200 rev.2.00 mar 18, 2008 page 1 of 24 M61040FP smart battery protection and monitoring ic rej03f0237-0200 rev.2.00 mar 18, 2008 description the M61040FP is intended to be used as sb: smart battery. all functions needed for sb are packed to this M61040FP. the combination use with microcomputer such as m37515 will give various functions such as a detection or calculati on of sb remaining capacity. over current detection circuit dedicated in M61040FP will give sa fety fet on/off contro l independent from micr ocomputer control. the amp gain of charge/discharge curre nt detection circuit is c ontrolled by microcomputer, therefore the accuracy of sb's remaining capacity detection becomes better than before. the reset circuit and the linear regulator for v cc /vref of microcomputer are dedicated in M61040FP. so this w ill help easy design of power circuit design of sb. features ? built-in high gain op-amps for monitoring charge/discharge current ? built-in over current detection circuit for fet protection ? all fets are controlled by microcomputer ? various powers saving function to reduce total power dissipation ? high input voltage device (absolute maximum rating: 33 v) application smart battery system block diagram v cc vreg vref reset ck di cs a nalog out v in11 v in10 gnd v in4 v in3 v in2 v in1 c in df out pf out cf out v in12 series regulator serial to parallel conversion circuit multi-plexer circuit offset control gain selector regulator on/off and reset circuit battery cell voltage detection circuit battery cell 1-4 voltage analog output charge/discharge current detection circuit + ? + ? over current detection circuit delay circuit
M61040FP rej03f0237-0200 rev.2.00 mar 18, 2008 page 2 of 24 pin arrangement 20 17 18 19 1 4 3 2 16 5 15 6 14 7 13 8 12 9 11 10 vreg v cc vref cf out reset pf out di df out ck v in1 cs v in2 analog out v in3 c in v in4 v in11 v in12 v in10 gnd M61040FP outline: 20p2x-a (top view) pin description pin no. pin name functions 5 v in1 battery 1 + voltage input 6 v in2 battery 1 ? voltage and battery 2 + voltage input 7 v in3 battery 2 ? voltage and battery 3 + voltage input 8 v in4 battery 3 ? voltage and battery 4 + voltage input 9 v in12 monitoring charger is connected or not 13 c in connect capacitor for over current detection delay 11 v in10 charge/discharge current monitor input and connects charge/discharge current sense resistor 12 v in11 charge/discharge current monitor input and connects charge/discharge current sense resistor 1 v cc power source pin. power from charger or battery 10 gnd ground 20 vreg linear-regulator out put for microcomputer 19 vref vreg voltage output for vreg of microcomputer, max 200 a/5 v 18 reset reset signal output to reset of microcomputer 14 analog out various analog signal output s to ad-input of microcomputer 4 df out discharge fet-drive output. the driver is turned off when over current detected. 2 cf out charge fet-drive output. the driver is turned off by microcomputer. 17 di input of 6-bit length se rial data from microcomputer 16 ck input of shift clock from microcomputer. di's input data is latched by low-to-high edge of this ck 15 cs during low signal input to this cs, data input to di is enabled. 3 pf out pre-charge fet-drive output. the driv er is turned off by microcomputer.
M61040FP rej03f0237-0200 rev.2.00 mar 18, 2008 page 3 of 24 absolute maximum ratings item symbol ratings unit absolute maximum rating vabs 33 v supply voltage v cc 30 v power dissipation pd 750 mw operating temperature range topr1 ?20 to +85 c storage temperature range tstg ?40 to +125 c electrical characteristics (ta = 25 c, v cc = 14 v, unless otherwise noted) item symbol min typ max unit circuit test conditions supply voltage v cc ? ? 30 v supply current 1 isup1 105 200 280 a 7 voltage monitor, v/r, reset on, current monitor on supply current 2 isup2 65 120 165 a 7 voltage monitor, v/r, reset on, current monitor off supply current (at power save mode) ips 35 60 85 a 7 regulator on, non-loading, reset circuit on, others off total supply current (at power down mode) ipd ? ? 0.5 a 7 all operation stop, v in 12 = gnd output voltage vreg 5.145 5. 2 5.295 v 3 iout = 20 ma input and output voltage difference vdif0 ? 0.3 0.8 v 3 iout = 20 ma linear regulation ? vout10 ? 100 200 mv 3 v cc = 6.2 to 24 v, iout = 20 ma load regulation ? vout20 ? 30 45 mv 3 v cc = 6.2 v, iout = 50 a to 20 ma regulator input voltage v in 0 ? ? 30 v v cc voltage output voltage vref 4.818 4.85 4.917 v 4 iout = 200 a reference voltage load stability ? vout21 ? 5 45 mv 4 v cc = 6.2 v, iout = 50 to 200 a over current inhibit detection voltage 1 vcl vcl ? 0.02 0.2 vcl + 0.02 v 8 over current inhibit detection voltage 2 vch vcc 3 0.6 vcc 3 vcc 3 1.4 v 8 load short detection over current inhibit detection delay time 1 tvcl 7 10 15 ms 5 cict = 0.01 f over current detection over current inhibit detection delay time 2 tvch 150 250 350 s 8 input offset voltage voff1 31 208 385 mv 5 voltage gain 1 gamp1 0.99 1.0 1.01 ? 5 output source current isource1 150 ? ? a 10 output sink current isink1 150 ? ? a 10 battery voltage detection detection voltage of battery cell vref-voff1 4.45 ? ? v 5, 6
M61040FP rej03f0237-0200 rev.2.00 mar 18, 2008 page 4 of 24 item symbol min typ max unit circuit test conditions input offset voltage voff2 0.2 2 3.8 v 5 gain = 200 selected voltage gain 21 gain21 38.4 40 41.6 v 5 voltage gain 22 gain22 96 100 104 v 5 voltage gain 23 gain23 192 200 208 v 5 output source current isource2 150 ? ? a 9 charge/ discharge current detection output sink current isink2 150 ? ? a 9 di input h voltage vdih 3.5 ? vreg v 1 di input l voltage vdil 0 ? 0.5 v 1 cs input h voltage vcsh 3.5 ? vreg v 1 cs input l voltage vcsl 0 ? 0.5 v 1 ck input h voltage vckh 3.5 ? vreg v 1 interface ck input l voltage vckl 0 ? 0.5 v 1 detection voltage1 vdet ? 3.045 3.25 3.475 v 2 reset release voltage1 vdet+ 4.16 4.2 4.27 v 2 v in1 resistor r inv1 4.4 12 27 k ? 6 v in2 resistor r inv2 4.4 12 27 k ? 6 v in3 resistor r inv3 4.4 12 27 k ? 6 conditioning circuit v in4 resistor r inv4 4.4 12 27 k ? 6 thcs tscs reference period tsdi thdi ck di cs figure 1 interface timing
M61040FP rej03f0237-0200 rev.2.00 mar 18, 2008 page 5 of 24 operation description m61040 is developed for intelligent li-ion battery pack such as sb in sbs. m61040 is suitable for smart battery. ? sbs: smart battery system introduced by intel and duracell ? sb: smart battery which contains 3 or 4 series li-ion battery cells. all analog circuits are included to m61040. therefore pair using with microcomputer such as m37515 and small additional parts will give various functions such as battery remaining capacity detection. all functions are described as follows: 1. voltage detection circuit of each li-ion battery cells m61040 can output each battery cell's voltage of 3 or 4 series connection. bu ilt-in buffer amplifier is monitoring each battery voltage. microcomputer can adjust the offset voltage. 2. charge/discharge current detection circuit in sbs, remaining capacity check function (gas-gage f unction) is necessary. to cal culate accurate remaining capacity, microcomputer must get charge/discharge current periodically. accurate char ge/discharge current of external sense register is monitored by built-in amp. th e charge/discharge current is converted to voltage value through the accurate sense resistor. output gain can be controlled by micr ocomputer. off-set voltage can be set lower by external parts, therefore dynamic range of microcomputer's a to d converter will widen. 3. over current detection circuit m61040 contains over current detection circuit. the disc harging fet is turned off to stop discharging and it continues for the over current detection delay time (tiov1) or longer, if the discharging current becomes equal to or higher than a specified value. it is n ecessary for safety of li-ion battery pack. delay time is set by external capacity connected to cin. also the voltage of cin shows det ection or not detection of over current. over current detection is controlled indepe ndently by this m61040's built-in hardware not by microcomputer's software control. 4. series regulator, reference voltage m61040 contains low drop out series regulator. microcomputer in sb does not need any additional voltage regulator, max 20 ma/5 v. also m61040 gives very accurate reference voltage as 4.85 v for vref voltage for microcomputer's a to d converter. 5. reset circuit for microcomputer vreg output voltage is checked by reset circuit of m61040. therefore, lower voltage of vreg issues reset signal to stop mull-function of microcomputer. also, lower voltage after long time's left issues reset signal to stop mull- function of microcomputer. this function is useful for safety of long time's left battery. when charger is connected to sb, this circuit will check vreg vo ltage, so if vreg voltage is not enough high, this circuit remains low as for reset signal to microcomputer. 6. power save function M61040FP contains power save function to control several supply current. the function and control method are shown as table 1. the function of battery voltage detection circuit, charge/d ischarge detection circuit, over current detection circuit can be stopped as the need arises. table 1 control method battery voltage detection circuit charge/discharge detection circuit over current detection circuit { { { software control (through serial i/f) each function can be on/off separately.
M61040FP rej03f0237-0200 rev.2.00 mar 18, 2008 page 6 of 24 ? enter power down mode microcomputer issues shot-down command to m61040 after microcomputer detects that battery voltage is too low. after this command, the dfout pin is set to "high" and the v in12 pin is pulled down by internal resistor to be set "low" and series regulator are turned off. in the power down mode, the m61040 operation is impo ssible. and cfout, dfout and pfout pins are set to "high". (in this situation, both charging and discharging are forbidden.) at this time, supply current becomes max 1.0 a, so drops of battery voltage is prevented. reset cf out pf out df out v in1 v cc v in12 vreg vref ck di cs M61040FP gnd level in discharging regulator on/off control reset circuit control signal from i/f circuit serial to parallel conversion circuit series regulator 5 4 3 2 1 9 20 19 18 16 17 15 figure 2 function after detecting over-discharge ? resume from power down mode after entering power down mode, the series regulator will begin operati on when charger is connected (v in12 pin is high). the reset will output low to high signal when vreg is over reset level voltage. microcomputer will begin operation and send command to resume m61040 from power down mode. 7. conditioning circuit m61040 have a discharge circuit of each cells. it is availa ble for drop of cell voltage for safety purpose. and to shorten the difference voltage among the cells. it can extend the battery pack life.
M61040FP rej03f0237-0200 rev.2.00 mar 18, 2008 page 7 of 24 measurement circuit circuit 1 circuit 2 1 m ? v v circuit 3 v cc v in1 v in2 v in3 v in4 gnd v in10 v in11 14 v v in12 vreg vref reset di ck cs analog out cf out pf out df out test0 test1 c in 5 v ics ick idi M61040FP v cc v in1 v in2 v in3 v in4 gnd v in10 v in11 v in12 vreg vref reset di ck cs analog out cf out pf out df out test0 test1 c in M61040FP v cc v in1 v in2 v in3 v in4 gnd v in10 v in11 v in12 vreg vref reset di ck cs analog out cf out pf out df out test0 test1 c in M61040FP a a a 4.7 f v fl v
M61040FP rej03f0237-0200 rev.2.00 mar 18, 2008 page 8 of 24 circuit 4 5 v v fl 4.7 f circuit 5 circuit 6 v fl 4.7 f v1 v2 v3 v4 data input 0.5 v ? 3.5 v v v v cc v in1 v in2 v in3 v in4 gnd v in10 v in11 v in12 vreg vref reset di ck cs analog out cf out pf out df out test0 test1 c in M61040FP v cc v in1 v in2 v in3 v in4 gnd v in10 v in11 v in12 vreg vref reset di ck cs analog out cf out pf out df out test0 test1 c in M61040FP 4.7 f v2 v3 data input 0.5 v ? 3.5 v v1 i1 i2 i3 v4 i4 a a a a v cc v in1 v in2 v in3 v in4 gnd v in10 v in11 v in12 vreg vref reset di ck cs analog out cf out pf out df out test0 test1 c in M61040FP
M61040FP rej03f0237-0200 rev.2.00 mar 18, 2008 page 9 of 24 circuit 7 ipd, ips, isup2, isup1 a data input 0 v ? 5 v measuring ipd: on except above : off measuring ipd: on except above : off circuit 8 circuit 9 14 v 4.7 f v v 14 v isink isource 4.7 f data input 0.5 v ? 3.5 v a v cc v in1 v in2 v in3 v in4 gnd v in10 v in11 v in12 vreg vref reset di ck cs analog out cf out pf out df out test0 test1 c in M61040FP v cc v in1 v in2 v in3 v in4 gnd v in10 v in11 v in12 vreg vref reset di ck cs analog out cf out pf out df out test0 test1 c in M61040FP v cc v in1 v in2 v in3 v in4 gnd v in10 v in11 v in12 vreg vref reset di ck cs analog out cf out pf out df out test0 test1 c in M61040FP
M61040FP rej03f0237-0200 rev.2.00 mar 18, 2008 page 10 of 24 circuit 10 isink isource data input 0.5 v ? 3.5 v a 4.7 f v1 v2 v3 v4 v cc v in1 v in2 v in3 v in4 gnd v in10 v in11 v in12 vreg vref reset di ck cs analog out cf out pf out df out test0 test1 c in M61040FP
M61040FP rej03f0237-0200 rev.2.00 mar 18, 2008 page 11 of 24 block diagram description (1) battery voltage detection circuit the m61040 battery voltage detection circuit is shown in figure 3. this circuit is composed of switch, buffer amplif ier, reference voltage section and logic circuit. microcomputer selects detecting voltage before logic circ uit controls the connection of switches. this connection decides which cell voltage (vbat1, vbat2, vbat3, vbat4) should be output from analog out pin. besides offset voltage can be output. in power down mode, supply current in this block is close to zero because all switches are off. note: regard 50 s as the standard of settling time by voltage change in this block. v in1 v in2 s22 s21 s11 v in3 s32 s31 v in4 s42 s41 v in10 s02 s01 vat1 vat2 vat3 vat4 vref gnd switch control from serial to parallel conversion circuit logic circuit to multiplexer circuit + ? 5 6 7 8 11 figure 3 battery voltage detection circuit
M61040FP rej03f0237-0200 rev.2.00 mar 18, 2008 page 12 of 24 (2) charge/discharge current detection circuit the charge/discharge current detection circuit is shown in figure 4. this circuit is composed of offset voltage adjustment circuit, buffer amplifier and resistor network. the pre-amplifier amplifies th e voltage of sense resistance to the volta ge based on gnd. the voltage gain can be selected by microcomputer commands. buffer amplifier does an impedance translation between input and output. v in11 12 11 10 v in10 gnd rsence rc1 rd1 rc2 rc3 rd2 rd3 amp3 amp2 amp1 amp4 r r r r vreg = 5.2 v to multiplexer circuit offset voltage adjustment circuit from serial to parallel conversion circuit from serial to parallel conversion circuit discharge current monitor charge current monitor + ? + ? + ? + ? figure 4 charge/discharge current detection circuit the offset voltage can be compen sated by adjustment circuit. the function in detecting discharge current is shown in figure 5. the differential voltage of sense resistor is input to + (plus) terminal of amp 1 when discharge current is fl owing in sense resistor. selecting high voltage gain by microcomputer's command is capable of monito ring very little discharg e current accurately. the differential voltage of sense resistor is input to ? (minus) terminal of amp 2 when charge current is flowing in sense resistor. the methods of detecting in charging are the same as in discharging except that amp2 reverses input voltage before outputting. note: regard 500 s as the standard of settling time by voltage change in this block. rc1 rd1 rc2 rc3 rd2 rd3 rsence vb = idis ? rsens ? gain va = idis ? rsens ? gain charge current icha discharge current idis from i/f circuit + ? + ? amp1 amp2 v in11 12 11 v in10 figure 5 charge/discharge current detection
M61040FP rej03f0237-0200 rev.2.00 mar 18, 2008 page 13 of 24 (3) over current detection circuit the over current detection circuit is shown in figure 6. th is circuit is composed of comparator, reference voltage and delay circuit. it can be got high accuracy ove r current detection by adjus ting detection voltage with se nse resistor. microcomputer can detect the over current status through monitoring "c in " pin. besides this block contains load-short detection circuit. this circuit detects load-short with v in12 pin and protects faster than over current detection. v ref1 df out v in11 v in12 v in10 rsense 11 4 9 13 12 c in to microcomputer battery delay circuit + ? figure 6 over current detection circuit (4) voltage regulator and reference voltage voltage regulator and reference circuit are shown in fi gure 7. pch mos transistor is used for output driver. the output voltage can be adjusted by m61040 itself. so the external resistor is not required. note: there is a diode put between v cc and vreg terminal to prevent the invert current from damaging this ic when v cc voltage is higher than vreg voltage. so please always keep vreg voltage lower than v cc + 0.3 v. set a condenser on output to suppress input changes or load changes. on/off on/off m1 m1 vref1 vref2 r 1 r 2 r 3 r 4 v cc vreg 20 1 19 vref serial to parallel conversion circuit + ? + ? figure 7 voltage regulator circuit
M61040FP rej03f0237-0200 rev.2.00 mar 18, 2008 page 14 of 24 (5) reset circuit the m61040 reset circuit is shown in figure 8. this circuit is composed of comparator, reference voltage section and breeder resistor. the reset output is nch open drain structure so th e reset delay time depends on external cr value. the reset circuit monitors vreg output to prevent microcomputer abnormal operation when v cc voltage goes down abnormally. reset vreg r1 vref1 r2 rh gnd + ? figure 8 reset circuit
M61040FP rej03f0237-0200 rev.2.00 mar 18, 2008 page 15 of 24 (6) conditioning circuit the m61040 conditioning circuit is shown in figure 9. this circuit is composed of switch, resistor and logic circuit. according to the serial data from micr ocomputer, the logic circuit can indivi dually control the switches (s60, s61 ... etc.) to do individual cell discharge to a select voltage. this circuit is capable of making all sells discharge at the same time. v in1 v in2 v in3 v in4 5 6 7 8 10 s60 gnd v1 v2 v3 v4 r60 s61 r61 s62 r62 s63 r63 switch control logic circuit serial to parallel conversion circuit figure 9 conditioning circuit
M61040FP rej03f0237-0200 rev.2.00 mar 18, 2008 page 16 of 24 digital data format mpx mpx mpx mpx mpx mpx latch latch latch latch latch latch offset adjustment vreg, vref control multiplexer control fet, vr control notes: * 1 charge, discharge current detection * 2 battery voltage output * 1 * 2 msb lsb first last di ck cs d5 d4 d3 d2 d1 d0 6-bit shift resister address decoder figure 10 serial to parallel conversion circuit data timing example ck di cs d0 d1 d2 d3 d4 d5 msb lsb figure 11 serial to parallel timing chart
M61040FP rej03f0237-0200 rev.2.00 mar 18, 2008 page 17 of 24 data timing table 2 address data establishment data d5 d4 d3 d2 d1 d0 contents reset 0 0 0 ? ? ? battery voltage output 0 0 1 ? ? ? refer to table 3 offset adjustment 0 1 0 ? ? ? refer to table 4 charge/discharge current detection 0 1 1 ? ? ? refer to table 5 fet control 1 0 0 ? ? ? refer to table 6 multiplexer select 1 0 1 ? ? ? refer to table 7 conditioning circuit 1 1 0 ? ? ? refer to table 8 regulator over current control 1 1 1 ? ? ? refer to table 9 table 3 battery voltage output d2 d1 d0 output voltage detail 0 0 0 v1 0 0 1 v2 0 1 0 v3 0 1 1 v4 1 0 0 connect to v in2 offset voltage output 1 0 1 connect to v in3 offset voltage output 1 1 0 connect to v in4 offset voltage output 1 1 1 connect to v in10 offset voltage output note: v1 battery voltage output when system reset table 4 offset voltage control secti on of discharge current monitor amplifier output d2 d1 d0 offset voltage value 0 0 0 no offset (0 v) 0 0 1 1 v 0 1 0 2.1 v 0 1 1 3.1 v 1 0 0 3.7 v 1 0 1 1 v 1 1 0 1 v 1 1 1 1 v note: no offset voltage when system reset table 5 charge and discharge current detection d2 d1 d0 mode output 0 0 0 amp stop, resistor open am p operation stop, current save 0 0 1 gain 40 output 0 1 0 gain 100 output 0 1 1 gain 200 output 1 0 0 amp stop, resistor open am p operation stop, current save 1 0 1 offset output ( 40) 1 1 0 offset output ( 100) 1 1 1 offset output ( 200) note: amplifier operation is stopped when system reset
M61040FP rej03f0237-0200 rev.2.00 mar 18, 2008 page 18 of 24 table 6 fet regulator control fet connection terminal d2 d1 d0 cf out terminal df out terminal pf out terminal 0 0 0 high high high 0 0 1 high high low 0 1 0 high low high 0 1 1 high low low 1 0 0 low high high 1 0 1 low high low 1 1 0 low low high 1 1 1 low low low note: cf out , df out and pf out are high when system reset. (over current detection is disable when df out is high.) table 7 multiplexer control d2 d1 d0 output 0 0 0 open output (f loating) select 0 0 1 open output (f loating) select 0 1 0 open output (f loating) select 0 1 1 open output (f loating) select 1 0 0 charge current output select 1 0 1 discharge current output select 1 1 0 battery voltage output select 1 1 1 gnd output select note: multiplexer output is floating when system reset table 8 conditioning circuit d2 d1 d0 output 0 0 0 open 0 0 1 v1 conditioning (short v in1 and v in2 ) 0 1 0 v2 conditioning (short v in2 and v in3 ) 0 1 1 v3 conditioning (short v in3 and v in4 ) 1 0 0 v4 conditioning (short v in4 and gnd) 1 0 1 v1 to v4 conditioning (discharge all cells) 1 1 0 open 1 1 1 open note: conditioning circuit is floating when system reset table 9 regulator, over current detection control output d2 d1 d0 regulator over current detection circuit 0 0 0 on on 0 0 1 off (gnd output) * 1 * 1 0 1 0 on capacity delay terminal l fix 0 1 1 on capacity delay terminal h fix 1 0 0 don't care don't care 1 0 1 don't care don't care 1 1 0 don't care don't care 1 1 1 don't care don't care note: the regulator output is enable when system reset. 1. all functions of m 61040 are stooped. but if the charger is c onnected then m61040 will not enter power down mode.
M61040FP rej03f0237-0200 rev.2.00 mar 18, 2008 page 19 of 24 timing chart discharge sequence note: testing in constant voltage 5 4 3 2 1 0 0.15 0.1 0.05 0 ? 0.05 ? 0.1 v in11 (v) ? 0.15 20 15 10 5 0 cf out (v) 20 15 10 5 0 pf out (v) 20 15 10 5 0 df out (v) 20 15 10 5 0 5 0 vreg, reset reset vreg 5 0 analog out (v) battery voltage (v) supply voltage (v) from low voltage (vbat1, vbat2, vbat3, vbat4) vbat4 reaches the over-charge voltage. charge period discharging charging off in initializing off in initializing off in initializing charge start command from microcomputer command from microcomputer command from microcomputer pre-charge start command from microcomputer charge stop command from microcomputer pre-charge stop v in12 pin v in1 pin v dd pin charger connected microcomputer starts operations. gain 200 gain 40 pre-charge current monitor charge current monitor bat1 monitor bat2 monitor bat3 monitor bat4 monitor charge start
M61040FP rej03f0237-0200 rev.2.00 mar 18, 2008 page 20 of 24 discharge sequence 20 15 10 5 0 pf out (v) 20 15 10 5 0 df out (v) 20 15 10 5 0 5 0 vreg, reset reset vreg 5 0 analog out (v) 5 4 3 2 1 0 0.15 0.1 0.05 0 ? 0.05 ? 0.1 v in11 (v) ? 0.15 20 15 10 5 0 cf out (v) discharge period self discharge period vbat4 reaches the over-discharge voltage. from high voltage (vbat1, vbat2, vbat3, vbat4) discharge charge battery voltage (v) discharge start discharge stop command from microcomputer command from microcomputer command from microcomputer command from microcomputer command from microcomputer command from microcomputer off in power-down mode discharge stop v in12 pin: pulled down to gnd in discharge forbidden v in1 pin v dd pin system stop supply voltage (v) gain 200 gain 40 discharge current monitor bat1 monitor bat2 monitor bat3 monitor bat4 monitor
M61040FP rej03f0237-0200 rev.2.00 mar 18, 2008 page 21 of 24 over current detection sequence 20 15 10 5 0 pf out (v) 5 4 3 2 1 0 0.4 0.3 0.2 0 ? 0.2 ? 0.3 v in11 (v) ? 0.4 20 15 10 5 0 cf out (v) 20 15 10 5 0 df out (v) 20 15 10 5 0 5 0 vreg, reset reset v cc 5 0 analog out (v) 0.1 ? 0.1 vbat1 = vbat2 = vbat3 = vbat4 battery voltage (v) supply voltage (v) gain 40 discharge current monitor v in12 pin v in1 pin v dd pin discharge stop discharge stop discharge stop discharge stop discharge stop discharge stop load short load short over-current generation over-current generation rash current generation rash current generation discharge charge
M61040FP rej03f0237-0200 rev.2.00 mar 18, 2008 page 22 of 24 application circuit reset cf out pf out df out v in1 v in2 v in3 v in4 v in11 v in10 v cc v in12 vreg vref analog out di cs M61040FP ck d1 d2 pfet dfet rpf2 rpf1 rpf3 rcf1 rcf2 cvcc cfet r in12 r in1 c in1 v in1 v in3 v in4 v in2 v cc c out r in2 c in2 r in3 c in3 r in4 c in4 gnd ct 2nd protect creg rck rcs rdi ad in1 di cs ck ad in2 agnd dgnd c in c in11 r in11 cict rsence gnd m37515 v dd vref reset rreset creset cref + terminal ? terminal battery 1 battery 2 battery 3 battery 4
M61040FP rej03f0237-0200 rev.2.00 mar 18, 2008 page 23 of 24 table 10 fixed number symbol components purpose recommend min max n.b. d1 diode supply voltage ? ? ? please take care the maximum power dissipation. d2 diode supply voltage ? ? ? please take care the maximum power dissipation. dfet pch mosfet discharge control ? ? ? ? cfet pch mosfet charge control ? ? ? ? pfet nch mosfet precharge control ? ? ? ? rcf1 resistor pull down resistor 1 m ? 100 k ? 3 m ? ? rcf2 resistor current limit 100 k ? ? 1 m ? ? rpf1 resistor pull down resistor 1 m ? 100 k ? 3 m ? ? rpf2 resistor precharge current control 1 k ? ? ? ? rpf3 resistor current limit 100 k ? ? 1 m ? ? r in1 resistor measure for esd 10 ? ? 1 k ? c in1 capacitor measure for ripples of power supply 0.22 f ? 1.0 f ? r in2 resistor measure for esd 1 k ? ? 10 k ? c in2 capacitor measure for ripples of power supply 0.22 f ? 1.0 f ? r in3 resistor measure for esd 1 k ? ? 10 k ? c in3 capacitor measure for ripples of power supply 0.22 f ? 1.0 f please set up same value as rin2, cin2 r in4 resistor measure for esd 1 k ? ? 10 k ? c in4 capacitor measure for ripples of power supply 0.22 f ? 1.0 f please set up same value as rin2, cin2 cict capacitor set up delay time 0.01 f ? 0.47 f ? r in12 resistor measure for esd 10 k ? 300 ? 200 k ? ? cv cc capacitor measure for ripples of power supply 0.22 f ? ? ? rsence sensing resistor charge/discharge current monitor 20 m ? ? ? ? r in11 resistor measure for ripples of power supply 100 ? ? 1 k ? c in11 capacitor measure for ripples of power supply 0.1 f ? 1.0 f ? creg capacitor eliminate the voltage noise 4.7 f 0.47 f ? ? cref capacitor eliminate the voltage noise 4.7 f ? ? ? rreset resistor set up delay time 47 k ? 10 k ? 3 m ? crset capacitor set up delay time 0.1 f ? ? it is necessary that you adjust a delay time for mcu. rck resistor pull down resistor ? 100 k ? ? ? rcs resistor pull down resistor ? 100 k ? ? ? rdi resistor pull down resistor ? 100 k ? ? ?
M61040FP rej03f0237-0200 rev.2.00 mar 18, 2008 page 24 of 24 package dimensions 20p2x-a note: please contact renesas technology corp. for further details.
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any of the foregoing applications shall indemnify and hold harmless renesas technology corp., its affiliated companies and their officers, dir ectors, and employees against any and all damages arising out of such applications. 9. you should use the products described herein within the range specified by renesas, especially with respect to the maximum rating, operating supply voltage range, movement power voltage range, heat radiation characteristics, installation and other product characteristics. renesas sha ll have no liability for malfunctions or damages arising out of the use of renesas products beyond such specified ranges. 10. although renesas endeavors to improve the quality and reliability of its products, ic products have specific characteristic s such as the occurrence of failure at a certain rate and malfunctions under certain use conditions. please be sure to implement safety measures to guard against the poss ibility of physical injury, and injury or damage caused by fire in the event of the failure of a renesas product, such as safety design for hardware and software includin g but not limited to redundancy, fire control and malfunction prevention, appropriate treatment for aging degradation or any other applicable measures. among others, sinc e the evaluation of microcomputer software alone is very difficult, please evaluate the safety of the final products or system manufactured by you. 11. in case renesas products listed in this document are detached from the products to which the renesas products are attached or affixed, the risk of accident such as swallowing by infants and small children is very high. you should implement safety measures so that renesas products may not be easily detached from your products. renesas shall have no liability for damages arising out of such detachment. 12. this document may not be reproduced or duplicated, in any form, in whole or in part, without prior written approval from r enesas. 13. please contact a renesas sales office if you have any questions regarding the information contained in this document, renes as semiconductor products, or if you have any other inquiries. sales strategic planning div. nippon bldg., 2-6-2, ohte-machi, chiyoda-ku, tokyo 100-0004, japan http://www.renesas.com refer to " http://www.renesas.com/en/network " for the latest and detailed information. renesas technology america, inc. 450 holger way, san jose, ca 95134-1368, u.s.a tel: <1> (408) 382-7500, fax: <1> (408) 382-7501 renesas technology europe limited dukes meadow, millboard road, bourne end, buckinghamshire, sl8 5fh, u.k. tel: <44> (1628) 585-100, fax: <44> (1628) 585-900 renesas technology (shanghai) co., ltd. unit 204, 205, aziacenter, no.1233 lujiazui ring rd, pudong district, shanghai, china 200120 tel: <86> (21) 5877-1818, fax: <86> (21) 6887-7858/7898 renesas technology hong kong ltd. 7th floor, north tower, world finance centre, harbour city, canton road, tsimshatsui, kowloon, hong kong tel: <852> 2265-6688, fax: <852> 2377-3473 renesas technology taiwan co., ltd. 10th floor, no.99, fushing north road, taipei, taiwan tel: <886> (2) 2715-2888, fax: <886> (2) 3518-3399 renesas technology singapore pte. ltd. 1 harbour front avenue, #06-10, keppel bay tower, singapore 098632 tel: <65> 6213-0200, fax: <65> 6278-8001 renesas technology korea co., ltd. kukje center bldg. 18th fl., 191, 2-ka, hangang-ro, yongsan-ku, seoul 140-702, korea tel: <82> (2) 796-3115, fax: <82> (2) 796-2145 renesas technology malaysia sdn. bhd unit 906, block b, menara amcorp, amcorp trade centre, no.18, jln persiaran barat, 46050 petaling jaya, selangor darul ehsan, m alaysia tel: <603> 7955-9390, fax: <603> 7955-9510 renesas sales offices ? 2008. renesas technology corp., all rights reserved. printed in japan. colophon .7.2

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