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BQ24703PWR
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Texas Instruments Battery Management, TSSOP-24. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
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BQ24703PWR
Texas Instruments · Battery Management · TSSOP-24
BQ24703PWR from Texas Instruments, in a TSSOP-24. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | ACDET | input | AC or adapter power detection input; when its voltage is below VACPRES the device enters sleep mode with PWM control disabled. |
| 2 | ACPRES | output | Open-drain AC power indicator output that is high when the ACDET voltage is greater than VACPRES. |
| 3 | ACSEL | input | AC adapter power select input; a logic high selects ac power and a logic low selects the battery. |
| 4 | BATDEP | input | Depleted battery level input; battery depletion is detected when BATDEP is less than VACPRES. |
| 5 | SRSET | input | Battery charge current programming voltage input that sets the battery charge current limit. |
| 6 | ACSET | input | Adapter current programming voltage input that sets the system current level at which dynamic power management occurs. |
| 7 | VREF | power_in | Bypassed precision 5-V voltage reference output with a tight tolerance suitable for charging lithium-ion batteries. |
| 8 | ENABLE | input | Charge enable input; a high allows PWM control operation to enable charging while a low forces the PWM output high. |
| 9 | BATSET | input | External override to the internal precision reference; when used it must be greater than 1.0 V, and grounding it selects the internal reference. |
| 10 | COMP | output | Inverting input to the PWM comparator and output of the gm amplifiers, with a type II compensation network to GND recommended. |
| 11 | ACN | input | Negative differential input for the ac-to-dc adapter current sense resistor. |
| 12 | ACP | input | Positive differential input for the ac-to-dc adapter current sense resistor. |
| 13 | BATP | input | Battery charge regulation voltage measurement input to the battery-voltage gm amplifier, regulated to the VFB reference. |
| 14 | IBAT | output | Battery current differential amplifier output producing a voltage proportional to battery charge current, suitable for an ADC input. |
| 15 | SRN | input | Negative differential battery current sense amplifier input, tied to the battery terminal. |
| 16 | SRP | bidirectional | Positive differential battery current sense amplifier input that serves as the source pin for zero volt operation. |
| 17 | GND | power_in | Supply return and ground reference. |
| 18 | VS | power_in | System (load) voltage input that disables the BATDRV P-channel MOSFET if VS exceeds BATP; grounding VS disables this function. |
| 19 | ALARM | output | Open-drain depleted battery alarm output that goes high when the BATDEP voltage is below VACPRES. |
| 20 | VHSP | output | Voltage source for driving the gates of the external MOSFETs, bypassed with a 1-µF capacitor close to the pin. |
| 21 | PWM | output | Gate drive output for the external P-channel PWM MOSFET, active when ACPRES, ACSEL and ENABLE are high. |
| 22 | VCC | power_in | Operational supply voltage. |
| 23 | BATDRV | output | Battery power source select output driving an external P-channel MOSFET, driven low to GND when ACDET is less than VACPRES. |
| 24 | ACDRV | output | AC or adapter power source select output driving an external P-channel MOSFET, driven low to VHSP when ACSEL is high and ACDET is greater than VACPRES. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-24 |
| Category | Power Management (PMIC) |
| Pins | 24 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply voltage analog and PWM operation | VCC | 7 | 28 | V | Analog and PWM operation | 4 | |
| Supply voltage selector operation | VCC | 4.5 | 28 | V | Selector operation | 4 | |
| Negative ac current sense | ACN | 7 | 28 | V | 4 | ||
| Positive ac current sense | ACP | 7 | 28 | V | 4 | ||
| Negative battery current sense | SRN | 5 | 28 | V | 4 | ||
| Positive battery current sense | SRP | 5 | 28 | V | 4 | ||
| AC or adapter power detection | ACDET | 0 | 5 | V | 4 | ||
| AC power indicator | ACPRES | 0 | 5 | V | 4 | ||
| AC adapter power select | ACSEL | 0 | 5 | V | 4 | ||
| Depleted battery level | BATDEP | 0 | 5 | V | 4 | ||
| Battery charge current programming voltage | SRSET | 0 | 2.5 | V | 4 | ||
| Charge enable | ENABLE | 0 | 5 | V | 4 | ||
| External override to internal 0.5% precision reference | BATSET | 0 | 2.5 | V | 4 | ||
| Inverting input to the PWM comparator | COMP | 0 | 5 | V | 4 | ||
| Battery charge regulation voltage measurement input | BATP | 0 | 5 | V | 4 | ||
| Battery current differential amplifier output | IBAT | 0 | 5 | V | 4 | ||
| System load voltage input pin | VS | 0 | 2.5 | V | 4 | ||
| Depleted battery alarm output | ALARM | 0 | 5 | V | 4 | ||
| Battery power source select output | BATDRV | 0 | 28 | V | 4 | ||
| ACSET | ACSET | 0 | 2.5 | V | 4 | ||
| Operating free-air temperature | TA | -40 | 85 | °C | 4 | ||
| Supply voltage range | VCC | -0.3 | 30 | V | 3 | ||
| Battery voltage range SRP, SRN | SRP,SRN | -0.3 | 30 | V | 3 | ||
| Input voltage ACN, ACP | ACN,ACP | -0.3 | 30 | V | 3 | ||
| Virtual junction temperature range | TJ | -40 | 125 | °C | 3 | ||
| Maximum source/sink current VHSP | VHSP | 50 | mA | 3 | |||
| Maximum ramp rate for VCC | VCC | 10 | V/μs | 3 | |||
| Maximum sink current ACPRES, COMP, ALARM | 2.5 | mA | 3 | ||||
| Maximum ramp rate for V(BAT) | V(BAT) | 10 | V/μs | 3 | |||
| Maximum source/sink current BATDRV | BATDRV | 10 | mA | 3 | |||
| Maximum source/sink current ACDRV | ACDRV | 10 | mA | 3 | |||
| Maximum source/sink current PWM | PWM | 50 | mA | 3 | |||
| Maximum source/sink current pulsed ACDRV | ACDRV | 50 | mA | 10-μs rise time, 10-μs fall time, 1-ms pulse width, single pulse | 3 | ||
| Maximum source current VREF | VREF | 30 | mA | 3 | |||
| Maximum source current SRP | SRP | 100 | mA | 3 | |||
| Maximum difference voltage SRP-SRN | SRP-SRN | 30 | V | 3 | |||
| Storage temperature range | Tstg | -65 | 150 | °C | 3 | ||
| Total chip operating current | IDD(OP) | 1 | 1.6 | 6 | mA | ACPRES = High, EN = 0 | 5 |
| Total battery sleep current, ac not present | IDD(SLEEP) | 22 | 28 | μA | ACPRES = Low | 5 | |
| Oscillator frequency 0°C to 85°C | fOSC(PWM) | 280 | 300 | 340 | kHz | 0°C ≤ TJ ≤ 85°C | 5 |
| Oscillator frequency -40°C to 125°C | fOSC(PWM) | 240 | 300 | 350 | kHz | -40°C ≤ TJ ≤ 125°C | 5 |
| Error-amplifier precision reference voltage TJ=25°C | V(FB) | 1.19 | 1.196 | 1.202 | V | TJ = 25°C | 7 |
| Error-amplifier precision reference voltage -40°C to 125°C | V(FB) | 1.178 | 1.196 | 1.204 | V | TJ = -40°C to 125°C | 7 |
| Output voltage VREF TJ=25°C | Vref | 4.985 | 5 | 5.013 | V | TJ = 25°C | 8 |
| Output voltage VREF -40°C to 125°C | Vref | 4.926 | 5 | 5.03 | V | TJ = -40°C to 125°C | 8 |
| Battery current set gain | AV | 24 | 25 | 26 | V/V | 0.65 V ≤ SRSET ≤ 2.5 V, 8 V ≤ SRN ≤ 16 V | 6 |
| AC current set gain | AV | 24.5 | 25.3 | 26.5 | V/V | 0.65 V ≤ ACSET ≤ 2.5 V, 12 V ≤ ACP ≤ 20 V | 7 |
| Total battery current-sense full-scale accuracy TJ=25°C | -3 | 3 | % | SRSET = 2.5 V, TJ = 25°C | 6 | ||
| Total ac current-sense full-scale accuracy TJ=25°C | -3.5 | 3.5 | % | ACSET = 2.5 V, TJ = 25°C | 7 | ||
| Sink current COMP (battery current amplifier) | I(SINK) | 0.5 | 1.5 | 2.5 | mA | COMP = 1 V, (SRP-SRN) = 10 mV | 6 |
| Input bias current SRP | IIB | 70 | 85 | 110 | μA | V(SRP) = 16 V, (SRP-SRN) = 100 mV, SRSET = 2.5 V, VCC = 28 V | 6 |
| Input bias current ACP, ACN | IIB | 40 | 50 | 65 | μA | ACP = ACN = 28 V, VCC = 28 V, ACSET = 2.5 V | 7 |
| Low-level input voltage ACSEL, ENABLE | VIL | 0.6 | V | 5 | |||
| High-level input voltage ACSEL, ENABLE | VIH | 1.8 | V | 5 | |||
| AC presence detect voltage | V(ACPRES) | 1.194 | 1.246 | 1.286 | V | 9 | |
| Battery depletion ALARM trip voltage | V(BATDEP) | 1.194 | 1.246 | 1.286 | V | 9 | |
| Zero volt operation threshold BATDEP increasing | 0.743 | 0.794 | 0.84 | V | 9 | ||
| Zero volt operation threshold BATDEP decreasing | 0.57 | 0.62 | 0.656 | V | 9 | ||
| Battery current output source current IBAT | IS(O) | 5 | 7.1 | 9.4 | mA | (SRP-SRN) = 100 mV | 8 |
| Internal reference override input threshold voltage | VIT | 0.2 | 0.25 | 0.35 | V | 6 | |
| Internal clamp source current COMP | IS(COMP) | 70 | 110 | 140 | μA | Error amplifier = OFF, V(COMP) = 1 V | 5 |
CAD (KiCad official)
- Symbol:
BQ24703PWR - Footprint:
Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm - 3D model: TSSOP-24 (KiCad packages3D, STEP)
- 3D model files:
bq24703pwr-etched.step/bq24703pwr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bq24703pwr.step/bq24703pwr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (40 pp, sha256
c7cccca725cc39ed, retrieved 2026-11-06, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).