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TB9004FNG 2011-11-14 1 toshiba bicmos integrated circuit silicon monolithic TB9004FNG 5 v and 3.3/2.5/1.5 v dual-volta ge regulator with watchdog timer the TB9004FNG is a system regulator ic for automotive applications, specially designed for 3.3/2.5/1.5v microcomputer systems. it incorporates two co nstant-voltage power outputs and various system reset functions. one of the power outputs, v cc1 , supplies 3.4, 2.5, or 1.5 v, as selected according to the application. this output uses an external output transistor. any desired current limiter value can be set using an external adjusting resistor. the other power output, v cc2 , supplies 5.0 v and also uses an external output transistor. any desired current limiter value can be set using an external adjusting resistor. for a system reset, both power outputs have a low-voltage monitor, power-on reset, and watchdog timer. with the both power outputs turned off, the TB9004FNG consumes 0 a. features ? power output v cc1 - output voltage: 3.4 v 0.10 v/2.55 v 0.10 v/1.55 v 0.07 v (selectable) - output current: 600 ma (with external transistor) - current limiter: variable using external adjusting resistor ? power output v cc2 - output voltage: 5.0 v 0.12 v - output current: 600 ma (with external transistor) - current limiter: variable using external adjusting resistor ? reset functions: low-voltage monitor, power-on reset, and watchdog timer ? low current consumption: active (v cc1 /v cc2 = on): 300 a (typ.) standby (v cc1 = on, v cc2 = off): 150 a (typ.) stop (v cc1 /v cc2 = off): 0 a (typ.) ? w/d stop control: control start/stop of watchdog timer ? operating temperature range: ? 40 to 125c ? small flat package: 24-pin ssop (0.65-mm pitch) ? the product(s) is/are compatible with rohs regulations (eu directive 2002 / 95 / ec) as indicated, if any, on the packaging label ("[[g]]/rohs comp atible", "[[g]]/rohs [[chemical symb ol(s) of controlled substance(s)]]", "rohs compatible" or "rohs compatible, [[chemica l symbol(s) of controlled substance(s)]]>mcv"). about solderability, following conditions were confirmed ? solderability (1) use of sn-37pb solder bath ? solder bath temperature = 230c ? dipping time = 5 seconds ? the number of times = once ? use of r-type flux (2) use of sn-3.0ag-0.5cu solder bath ? solder bath temperature = 245c ? dipping time = 5 seconds ? the number of times = once ? use of r-type flux weight: 0.14 g (typ.)
TB9004FNG 2011-11-14 2 block diagram note: the block diagram may show some of the functional bl ocks, circuits, or constants in abbreviated or simplified format for clarity in describing the relevant features. brst vin1 amp1 v re f v ref v re f mode control v s1 out1 comp1 v cc1 en gnd ck tc ws v sel1 v sel2 v cc1 v re f 0.3 v current limite r 5 v reg comp2 amp2 v cc2 vin2 v s2 out2 comp2 v cc2s 5v v cc2 v5 v cc2 v cc1s v cc2 open pin detection gnd st v cc1 open pin detection comp1 current limiter power-on reset watchdog timer arst fg 0.3v
TB9004FNG 2011-11-14 3 pin layout . en vin1 vs1 out1 comp1 vcc1 vcc1s gnd gnd vsel1 vsel2 ______ rst a ws ck tc vcc2s vcc2 comp2 out2 vs2 vin2 __ st 1 2 4 3 5 6 8 7 9 10 12 11 24 23 21 22 20 19 1718 16 15 13 14 TB9004FNG ______ rst b ___ fg
TB9004FNG 2011-11-14 4 pin description pin no. symbol description 1 out1 external transistor control pin. connect the base of the external pnp transistor to this pin. 2 v s1 detection pin for the v cc1 current limiter. a voltage drop occurring in the external resistor rs1 between vin1 and vs1 is monitored. the current limiter is actuated when the voltage drop exceeds 0.3 v. 3 v in1 power supply input pin for v cc1 . 4 st enable pin for on/off control of the v cc1 /v cc2 constant-voltage power outputs. driving st high turns the outputs on while driving it low turns them off. when both outputs are turned off, the TB9004FNG consumes a current of 0 a (typ.). it contains a 250 k pull-down resistor. 5 comp1 phase compensating pin for v cc1 . connect a phase compensating capacitor between v cc1 and this pin. 6 v cc1 voltage detection output pin for v cc1 . connect the collector of the exte rnal pnp transistor to this pin. this pin provides a 3.3, 2.5, or 1.5 v constant-voltage feedback. 7 v cc1s pin for detecting whether the v cc1 pin is open. if there is a voltage difference between v cc1 and v cc1s , the TB9004FNG lowers the v cc1 output voltage. 8 gnd ground pin 9 v sel1 10 v sel2 pin for selecting the v cc1 output voltage from among 3.3, 2.5, and 1.5 v. the voltage is selected using a combination of v sel1 and v sel2 . this pin incorporates a pull-down resistor. 11 gnd ground pin 12 fg flag output when v cc1 or v cc2 is detected to be open. the pin is usually high but driven low when either pin is detected to be open. n-ch mos drain output with a 10 k pull-up resistor connected to v cc2 . 13 arst v cc1 /v cc2 low-voltage monitor output and power-on reset/watchdog timer reset output pin generates a reset signal when a low voltage is detected for v cc1 or v cc2 . generates a reset signal which is determined by the capacitor ct connected to the tc pin. intermittently generates reset pulses if no clock is supplied to the ck pin. n-ch mos drain output with a 10 k pull-up resistor connected to v cc2 . 14 brst low-voltage monitor output pin for v cc1 and v cc2 . generates a reset signal when a low voltage is detected for v cc1 or v cc2 . linked with a power-on reset but not linked with the watchdog timer. 15 ws enable pin for on/off contro l of the watchdog timer. driving ws low turns the timer on while driving it high turns the timer off. use this pin when the watchdog timer is not necessary or to stop it temporarily. it contains a 250 k pull-down resistor to gnd. 16 ck clock input pin for the watchdog timer. it contains a 250 k pull-down resistor connected to gnd. 17 tc pin for setting a time for the power- on reset timer and watchdog timer when v cc1 and v cc2 rise. it connects to a capacitor ct which is grounded. it contains a 10 a pull-up constant current. 18 v cc2s pin for detecting whether the v cc2 pin is open. if there is a voltage difference between v cc2 and v cc2s , the TB9004FNG lowers the v cc2 output voltage. 19 v cc2 voltage detection pin for the 5 v c onstant-voltage power supply, v cc2 . it also supplies power to the reset timer block. 20 comp2 phase compensating pin for v cc2 . connect a phase compensating capacitor between v cc2 and this pin. 21 en enable pin for on/off control of the v cc2 constant-voltage power out put. driving en high turns the 5 v output on while driving it low turns the output off. it contains a 250 k pull-down resistor. 22 v in2 power supply input pin. 23 v s2 detection pin for the v cc2 current limiter. a voltage drop occurring in the external resistor rs2 between v in2 and v s2 is monitored. the current limiter is actuated when the voltage drop exceeds 0.3 v. 24 out2 external transistor control pin. connect the base of the exter nal pnp transistor to this pin.
TB9004FNG 2011-11-14 5 internal circuits of input/output pins note: the internal circuit diagrams are intended as an aid for describing circuits; they may be shown in abbreviated or simplified format. fg -------- vcc2 10k en 250k ? 250k st -------- 250k 250k vsel1 675k 570k vsel2 570k 300k 100k ck 250k 1k tc 10a vcc2 1k ws 250k 1k rst a -------------------- 10k vcc2 rst b -------------------- 10k vcc2 watchdog timer low voltage detection
TB9004FNG 2011-11-14 6 timing charts timing (1) timing (2) note1: see electrical characteristics about symbols in timing charts. note2: timing charts may be simplified to clar ify the descriptions of features and operations. vth(+) vth 5v vth5(+) vth5 vcc2 3.3v 2.5v 1.5v vcc1 ck ______ rst a trst twd tpor tc 0v tpor tpor vth5 vth5(+) vth(+) vth ws ______ rst b vil vih 0v 0v 0v 0v 0v 0v tw tw vth 5v vth5 vcc2 3.3v 2.5v 1.5v vcc1 tpor 0v 0v ______ rst a 0v 0v en 0v __ st vth(+) vth5(+) ______ rst b 0v
TB9004FNG 2011-11-14 7 absolute maximum ratings (ta = 25c) characteristics symbol pins rating unit vin-1 vin1,vin2 45 (1 s) v in-2 en,st, vsel1,vsel2 vin2 v in-3 ck,tc,ws vcc2 input voltage v in-4 vin1, vin2 40 v iout1 rst a -------------------- , rst b -------------------- 10 output current iout2 fg 10 ma operating temperature t opr ? ? 40 to 125 c storage temperature t stg ? ? 55 to 150 c note: the absolute maximum ratings of a semiconductor device are a set of specified par ameter values that must not be exceeded during operation, even for an instant. if any of these levels is exceeded during operation, t he electrical characteristics may be irreparably altered and the reliability and lifetime of t he device can no longer be guaranteed, possibly causing damage to any other equipment with which it is used. applications using the device should be designed so that the absolute maximum ratings will never be exceeded in any operating conditions. ensuring that the parameter values remain within t hese specified ranges during device operation will help to ensure that the integrity of the device is not compromised.
TB9004FNG 2011-11-14 8 electrical characteristics (unless otherwise specified, vin = 6 to 16 v, i load -1 = 10 ma, i load -2 = 10 ma, ta = ? 40 to 125c) characteristics symbol applicable pins test conditions min typ. max unit dc characteristics supply current i cc st -------- = en = h ? 300 500 standby current i cc -stb st -------- = h, en = l ? 150 250 stop current i cc -off vin1 + vin2 st -------- = l ? 0 10 a regulator v reg3.3 v cc1 v sel1 = h, v sel2 = h 3.3 3.4 3.5 v reg2.5 v cc1 v sel1 = h, v sel2 = l 2.45 2.55 2.65 v reg1.5 v cc1 v sel1 = l, v sel2 = l 1.48 1.55 1.62 output voltage v reg5.0 v cc2 ? 4.88 5.0 5.12 v output current i out out1, out2 ? 10 ? ? ma vline1(1) v cc1 vin1 = 6 to 40 v ? 0.1 0.5 vline2(1) v cc2 vin2 = 6 to 40 v ? 0.1 0.5 line regulation vline1 (2) v cc1 vin1 = 4 to 5.15 v ? 0.02 0.1 % v load1 v cc1 i load = 1 to 200 ma ? 0.2 1.0 load regulation v load2 v cc2 i load = 1 to 300 ma ? 0.2 1.0 % temperature coefficient ? v cc1 , v cc2 ? ? 0.01 ? %/ current limiter detection vlimit vcc1-vs1, vcc2-vs2 ? 0.225 0.300 0.375 v mode select input current iin vin (st) = 14 v 25 50 100 a vih ? 2 ? ? input voltage vil st ? ? ? 0.5 v input current iin vin (en) = 14 v 25 50 100 a vih ? 2 ? ? input voltage vil en ? ? ? 0.5 v input current iin vin (v sel ) = 3.4 v 5 10 20 a v ih ? 1.0 ? ? input voltage v il vsel1 vsel2 ? ? ? 0.3 v input voltage difference vth-sel vsel1 vsel2 vth(vsel2) ? vth(vsel1) 0.05 0.1 0.15 v note: the specification value for suppl y current is the value measured when i load = 0 ma.
TB9004FNG 2011-11-14 9 electrical characteristics ( unless otherwise specified, v in = 6 to 18 v, i load -1 = 10 ma, i load -2 = 10 ma, ta = ?40 to 125c ) characteristics symbol applicable pins test conditions min typ. max unit reset timer dc characteristics output voltage vol iol = 2 ma ? ? 0.3 v output leakage current ileak arst , brst v in(rst) = v cc2 ? ? 5 a output voltage vol iol = 2 ma ? ? 0.3 v output leakage current ileak fg vin(fg)=vcc2 ? ? 5 a input current iin tc ? -13 -10 -7 a vih ? 3.75 4 4.25 threshold voltage vil tc ? 1.8 2 2.2 v iih v in (ck) = 5 v 10 20 40 input current iil ck v in (ck) = 0 v ? ? 10 a vih ? 0.8 v cc2 ? ? input voltage vil ck ? ? ? 0.2 v cc2 v iih vin (ws) = 5 v 10 20 40 input current iil ws v in (ws) = 0 v ? ? 10 a vih ? 0.8 v cc2 ? ? input voltage v il ws ? ? ? 0.2 v cc2 v vth3.3 vreg3.3 3.0 3.15 3.3 ? vth3.3 vreg3.3 vth3.3 0.20 0.25 0.30 vhys3.3 v cc1 vth3.3(+) vth3.3 ? 0.05 ? v vth2.5 vreg2.5 2.3 2.4 2.5 ? vth2.5 vreg2.5 vth2.5 0.10 0.15 0.20 vhys2.5 v cc1 vth2.5(+) vth2.5 ? 0.04 ? v vth1.5 vreg1.5 1.35 1.41 1.47 ? vth1.5 vreg1.5 vth1.5 0.10 0.14 0.18 vhys1.5 v cc1 vth1.5(+) vth1.5 ? 0.03 ? v vth5 ? 4.5 4.7 4.9 ? vth5 vreg5.0 vth5 0.25 0.30 0.35 reset threshold voltage vhys5 v cc2 vth5(+) vth5 ? 0.10 ? v ?l? hold voltage of reset output vrlo v cc2 *see note3 ? ? 1.5 v reset timer ac characteristics power-on reset tpor arst , brst ? 280 ct 400 ct 520 ct ms watchdog timer twd ? 140 ct 200 ct 260 ct reset timer trst arst ? 0.3 ct 0.7 ct 1.5 ct ms clock pulse width tw ck ? 3 ? ? s
TB9004FNG 2011-11-14 10 note 1: the units for ct are f. note 2: the specification values for power-on reset, watchdog timer and reset timer above are intended to guarantee only for this ic. note that t he fluctuations of the ct value s hould be taken into consideration for practical use of the ic. note 3: vcc2 threshold voltage which rst a -------------------- or rst b -------------------- can output ?l?-level when v cc2 level rises or falls.
TB9004FNG 2011-11-14 11 reference characteristics current limiter detection voltage characteristics v cc1 6 5 4 3 2 1 0 0.1 0.2 output voltage vcc1 v limiter detection voltage vin1 vs1 v 0.3 0.4 current limiter detection voltage characteristics v cc 6 5 4 3 2 1 0 0.1 0.2 output voltage vcc v limiter detection voltage vin2 vs2 v 0.3 0.4
TB9004FNG 2011-11-14 12 table of truth value(1) input output st en vsel1 vsel2 v cc1 v cc2 mode h h l l 1.5 v 5 v h h h l 2.5 v 5 v h h h h 3.4 v 5 v active h l l l 1.5 v 0 v (off) h l h l 2.5 v 0 v (off) h l h h 3.4 v 0 v (off) standby l don?t care don?t care don?t care 0 v (off) 0 v (off) stop table of truth value(2) (v cc1 states during normal operation and when v sel1/2 is open) normal operation pin is open vsel1 vsel2 v cc1 open pin v cc1 vsel1 1.5 v l l 1.5 v vsel2 1.5 v vsel1 1.5 v h l 2.5 v vsel2 2.5 v vsel1 1.5 v h h 3.4 v vsel2 2.5 v test mode driving vsel1 low and vsel2 high causes the TB9004FNG to enter test mode for evaluating and inspecting the ic. this function must not be used in an actual application. the input v th for vsel1 is 0.1 v (typ.) lower than that for vsel2. the difference is specified as vth-sel in the electrical characteristics. if voltage is applied with vsel1 and vsel2 short-circuited, the vsel1/2 states can only become l/l, h/l or h/h, thus preventing the ic from en tering test mode. when set vsel1 or vsel2 to l, please connect to gnd.
TB9004FNG 2011-11-14 13 examples of application circuit example (1) 5v/1.5 v constant -voltage output power supply , 5v/1.5v parallel connection. 5.0v vdd5v po1 cp u 1 TB9004FNG en vb rs2 470pf c3 __ st gnd vdd1.5v ______ reset sw sw c2 out1 vs1 vin1 comp1 vcc1 vcc1s vcc2s vs2 vin2 out2 comp2 vcc2 ck vsel2 vsel1 ct tc ______ rst a ws ______ rst b ___ fg po2 vdd5v ______ reset vdd1.5v cp u 2 vss vss c4 rs1 1.5v 470pf c5 c1
TB9004FNG 2011-11-14 14 example (2) 5v/3.4 v constant -voltage output power supply , 5v/3.4v parallel connection. 5.0v vdd5v po1 cp u 1 TB9004FNG en vb rs2 470pf c3 __ st c1 gnd vdd3.3v ______ reset sw sw c2 out1 vs1 vin1 comp1 vcc1 vcc1s vcc2s vs2 vin2 out2 comp2 vcc2 ck vsel2 vsel1 ct tc ______ rst a ws ______ rst b ___ fg po2 vdd5v ______ reset vdd3.3v cp u 2 vss vss c4 3.4v 470pf rs1 c5
TB9004FNG 2011-11-14 15 example (3) 5v/1.5 v constant -voltage output power supply , 5v/1.5v series connection. note 1: caution for wiring c1, c2 and c3 are capacitors for absorbing disturbance noise, etc. connect them as close to the ic as possible. c4 and c5 are capacitors for phase compensa tion. connect them as close to the ic as possible. note 2: ensure that the ic is mounted correctly as spec ified. failing to observe t he correct mounting procedure or requirements may result in the ic or target equipment being damaged. note 3: the example application circuit is not guaranteed for mass production. additional thorough evaluation is required if the device is used in an a pplication intended for mass production. recommended conditions part name min max unit ct 0.01 10 f 5.0v vdd5v po1 cp u 1 TB9004FNG en vb rs2 470pf c3 __ st c1 gnd vdd1.5v ______ reset sw c2 out1 vs1 vin1 comp1 vcc1 vcc1s vcc2s vs2 vin2 out2 comp2 vcc2 ck vsel2 vsel1 ct tc ______ rst a ws ______ rst b ___ fg po2 vdd5v ______ reset vdd1.5v cp u 2 vss vss c4 rs1 1.5v 470pf c5
TB9004FNG 2011-11-14 16 package dimensions unit mm ssop24-p-300-0.65a weight: 0.14 g (typ.)
TB9004FNG 2011-11-14 17 restrictions on product use ? toshiba corporation, and its subsidiaries and affiliates (collect ively ?toshiba?), reserve the right to make changes to the in formation in this document, and related hardware, software a nd systems (collectively ?product?) without notice. ? this document and any information herein may not be reproduc ed without prior written permission from toshiba. even with toshiba?s written permission, reproduc tion is permissible only if reproduction is without alteration/omission. ? though toshiba works continually to improve product?s quality and reliability, product can malfunction or fail. customers are responsible for complying with safety standards and for prov iding adequate designs and safeguards for their hardware, software and systems which minimize risk and avoid situat ions in which a malfunction or failure of product could cause loss of human life, b odily injury or damage to property, including data loss or corruption. before customers use the product, create designs including the product, or incorporate the product into their own applications, cu stomers must also refer to and comply with (a) the latest ve rsions of all relevant toshiba information, including without limitation, this document, the specifications, the data sheets and applicat ion notes for product and the precautions and condi tions set forth in the ?toshiba se miconductor reliability handbook? and (b) the instructions for the application with which the product will be us ed with or for. customers are solely responsible for all aspe cts of their own product design or applications, including but not limited to (a) determining the appropriateness of the use of this product in such design or applications; (b) eval uating and determining the applicability of any info rmation contained in this document, or in c harts, diagrams, programs, algorithms, sample application circuits, or any other referenced documents; and (c) validating all operatin g parameters for such designs and applications. toshiba assumes no liability for customers? product design or applications. ? product is intended for use in general el ectronics applications (e.g., computers, personal equipment, office equipment, measur ing equipment, industrial robots and home electroni cs appliances) or for specif ic applications as expre ssly stated in this document . product is neither intended nor warranted for use in equipment or systems that require extraordinarily high levels of quality a nd/or reliability and/or a malfunction or failure of which may cause loss of human life, bodily injury, serious property damage or se rious public impact (?unintended use?). unintended use includes, without limitation, equipment used in nuclear facilities, equipment used in the aerospace industry, medical equipment, equipment used for automobiles, trains, ships and other transportation, traffic s ignaling equipment, equipment used to control combustions or explosions, safety dev ices, elevators and escalators, devices related to el ectric power, and equipment used in finance-related fields. do not use product for unintended use unless specifically permitted in thi s document. ? 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