BQ2954SNTR from Texas Instruments, in a SOP-16. 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	TM	input	Time-out programming input that sets the maximum charge time (1 to 24 hours) through an external R-C network, with a recommended C of 0.1 µF.
2	CHG	output	Open-drain charge-active output that is driven low when the battery is removed, during a temperature hold, on a fault, or when charge is done, and sinks at least 5 mA with VOL ≤ VSS + 0.8 V.
3	BAT	input	Battery voltage sense input, derived from a high-impedance divider across the battery terminals (RB1 + RB2 typically 150 kΩ to 1 MΩ) and rated for 0 to VCC.
4	VCOMP	input	Voltage loop compensation input that connects to an external R-C network to stabilize the regulated voltage.
5	ICOMP	input	Current loop compensation input that connects to an external R-C network to stabilize the regulated charge current.
6	ITERM	input	Three-state input that selects the IFULL and IMIN fast-charge termination thresholds according to Table 4.
7	SNS	input	Charging current sense input that reads the battery current as the voltage developed across an external sense resistor, with VSNS = 0.250 V at IMAX.
8	TS	input	Temperature sense input measured differentially against BAT-, using an external resistor-divider and NTC network to set the low and high temperature thresholds.
9	TPWM	input	Regulation timebase input that uses an external timing capacitor to VSS to set the PWM frequency, typically 100 kHz to 200 kHz.
10	BTST	output	Battery test output that is driven high when no battery is present to provide a potential at the battery terminal, and sources at least 10 mA at VOH ≥ VCC − 0.8 V.
11	LCOM	output	Common output for LED1 and LED2 that is high-impedance during initialization so DSEL and CSEL can be read, and sinks at least 30 mA with VOL ≤ VSS + 0.5 V.
12	VSS	power_in	System ground; all voltages on the device are specified relative to VSS.
13	VCC	power_in	Supply input at 5.0 V ±10% (4.5 V to 5.5 V recommended operating range, absolute maximum 7.0 V).
14	MOD	output	Pulse-width modulated push-pull current-switching control output that enables charge current when high, with a maximum duty cycle of 80%.
15	LED1/CSEL	bidirectional	Charger display status 1 output that also serves as the CSEL input, latched at VCC rise, to select low-side or high-side current sensing.
16	LED2/DSEL	bidirectional	Charger display status 2 output that also serves as the three-level DSEL input, latched at VCC rise, to select the LED display mode.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SOP-16
Category	Power Supply Chip
Pins	16

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter	Symbol	Min	Typ	Max	Unit	Conditions	Page
VCC relative to VSS	VCC	-0.3		7	V		13
DC voltage applied on any pin excluding VCC relative to VSS	VT	-0.3		7	V		13
Operating ambient temperature (commercial)	TOPR	-20		70	°C	Commercial	13
Storage temperature	TSTG	-55		125	°C		13
Soldering temperature	TSOLDER			260	°C	10s max.	13
Internal reference voltage tolerance	VREG	-1		1	%	TA = 25°C	13
Temperature coefficient tolerance (VREG)		-10		10	%		13
TS maximum threshold (VLTF) tolerance	VLTF	-0.03		0.03	V	Low-temperature fault	13
TS hysteresis threshold (VHTF) tolerance	VHTF	-0.03		0.03	V	High-temperature fault	13
TS minimum threshold (VTCO) tolerance	VTCO	-0.03		0.03	V	Temperature cutoff	13
High cutoff voltage (VHCO) tolerance	VHCO	-0.03		0.03	V		13
Under-voltage threshold at BAT	VMIN	-0.05	1.5	0.05	V		13
Recharge voltage threshold at BAT	VRECHG	-0.05	1.92	0.05	V		13
Low cutoff voltage	VLCO	-0.03	0.8	0.03	V		13
Internal reference voltage	VREG		2.05		V	TA = 25°C	13
Temperature coefficient			-0.5		mV/°C		13
Current sense at SNS tolerance (IMAX)	VSNS	-10		10	%	IMAX	13
Current sense at SNS tolerance (ICOND)	VSNS	-10		10	%	ICOND	13
Current sense at SNS (IMAX)	VSNS		0.25		V	IMAX	13
Current sense at SNS (ICOND)	VSNS		0.025		V	ICOND	13
Supply voltage	VCC	4.5	5	5.5	V		14
TS voltage potential	VTEMP	0			V		14
BAT voltage potential	VBAT	0			V		14
Supply current	ICC		2	4	mA	Outputs unloaded	14
DSEL tri-state open detection	IIZ	-2		2	µA		14
ITERM tri-state open detection	ITERM	-2		2	µA		14
LED1, LED2, BTST source current	IOH	-10			mA	VOH = VCC - 0.5V	14
MOD source current	IOH	-5			mA	VOH = VCC - 0.5V	14
LED1, LED2, BTST sink current	IOL	10			mA	VOL = VSS + 0.5V	14
MOD sink current	IOL	5			mA	VOL = VSS + 0.8V	14
CHG sink current	IOL	5			mA	VOL = VSS + 0.8V, Note 3	14
LCOM sink current	IOL	30			mA	VOL = VSS + 0.5V	14
DSEL logic input low source current	IIL			30	µA	V = VSS to VSS + 0.3V, Note 2	14
ITERM logic input low source current	IIL			70	µA	V = VSS to VSS + 0.3V	14
DSEL logic input high source current	IIH	-30			µA	V = VCC - 0.3V to VCC	14
ITERM logic input high source current	IIH	-70			µA	V = VCC - 0.3V to VCC	14
BAT pin input impedance	RBATZ	50			MΩ		15
SNS pin input impedance	RSNSZ	50			MΩ		15
TS pin input impedance	RTSZ	50			MΩ		15
Soft-programmed pull-up or pull-down resistor value	RPROG1			10	kΩ	DSEL, CSEL	15
Pull-up or pull-down resistor value	RPROG2			3	kΩ	ITERM	15
Charge timer resistor	RMTO	20		480	kΩ		15
Charge time-out range	tMTO	1		24	hours	See Figure 10	15
Pre-charge qual test hold-off period	tHO	300	600	900	ms		15
PWM regulator frequency range	fPWM		100	200	kHz	See Equation 7	15
Duty cycle	dPWM	0		80	%		15
Charge timer capacitor	CMTO			0.1	µF		15
PWM capacitor	CPWM		0.001		µF		15

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part	Material	Colour / plating	Datasheet says	Page
contacts		tin	16-Pin DIP Narrow (PN) 16-Pin SOIC Narrow (SN)	16

CAD (KiCad official)

Symbol: BQ2954SNTR
Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
3D model: SOP-16 (KiCad packages3D, STEP)
3D model files: bq2954sntr-etched.step / bq2954sntr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bq2954sntr.step / bq2954sntr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Texas Instruments datasheet (26 pp, sha256 527e2db91cecb526, retrieved 2026-10-31, tier: manufacturer)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-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).

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BQ2954SNTR

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