BQ25883RGER from Texas Instruments, in a VQFN-24-EP(4x4). Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	D-	bidirectional	Negative USB data line. Used for USB host/charging port detection (BC1.2), including data contact detection (DCD) and secondary detection.
2	STAT	output	Open drain charge status indicator. Connect to pull-up rail via 10-kΩ resistor. LOW = charge in progress; HIGH = charge complete or disabled; blinks at 1Hz on fault. Can be disabled via STAT_DIS.
3	/CE	input	Active low charge enable pin. Battery charging is enabled when EN_CHG bit = 1 and /CE pin is LOW. Internally pulled low with 900-kΩ resistor.
4	SDA	bidirectional	I2C interface data. Connect SDA to the pull-up rail through a 10-kΩ resistor.
5	SCL	input	I2C interface clock. Connect SCL to the pull-up rail through a 10-kΩ resistor.
6	/INT	output	Open drain active low interrupt output. Connect to pull-up rail via 10-kΩ resistor. Sends 256-µs active-low pulse to the host to report charger status and fault events.
7	TS	input	Temperature qualification voltage. Connect a NTC thermistor (recommend 103AT-2). Program temperature window with a resistor divider from REGN to TS to GND; charge suspends when TS is out of range.
8	ILIM	input	Input current limit (IINDPM) programming. IINDPM loop regulates ILIM pin voltage at 0.8V. Resistor to GND sets IINMAX = KILIM / RILIM. Short to GND for maximum limit; do not float. Cannot set below 500mA.
9	/PG	output	Open drain active low power good indicator. Connect to pull-up rail via 10-kΩ resistor. LOW indicates a good input source when input voltage is within VVBUS_OP (3.9V) and can provide more than IPOORSRC (30 mA).
10	NC	unconnected	No connect. Leave floating or tie to ground.
11	REGN	power_out	Gate drive supply. Bias supply for internal MOSFET drivers and IC. Bypass REGN to GND with a 4.7-µF ceramic capacitor. REGN current limit is 50 mA.
12	BTST	power_in	PWM high-side driver supply. Internally BTST is connected to the cathode of the boot-strap diode. Connect a 47-nF bootstrap capacitor from SW to BTST.
13	BAT	power_in	Battery power connection. Connect minimum recommended 10-µF capacitance (after derating) closely to BAT and GND.
14	BAT	power_in	Battery power connection. Connect minimum recommended 10-µF capacitance (after derating) closely to BAT and GND.
15	SYS	power_out	System connection. Internal BATFET connects SYS to BAT. When battery falls below minimum system voltage, the switch-mode converter keeps SYS above the minimum. Connect 2x22-µF capacitance (after derating) close to SYS and PGND.
16	SYS	power_out	System connection. Internal BATFET connects SYS to BAT. When battery falls below minimum system voltage, the switch-mode converter keeps SYS above the minimum. Connect 2x22-µF capacitance (after derating) close to SYS and PGND.
17	SW	power_out	Inductor connection. Connect to the switched side of the external inductor.
18	SW	power_out	Inductor connection. Connect to the switched side of the external inductor.
19	GND	power_in	Ground return.
20	GND	power_in	Ground return.
21	PMID	power_in	Blocking MOSFET connection. Total low-ESR capacitance on VBUS and PMID (after derating) is 10 µF; at least 1-µF at VBUS with remainder (typically 10 µF) at PMID.
22	PMID	power_in	Blocking MOSFET connection. Total low-ESR capacitance on VBUS and PMID (after derating) is 10 µF; at least 1-µF at VBUS with remainder (typically 10 µF) at PMID.
23	VBUS	power_in	Input supply. VBUS is connected to the external DC supply (3.9-6.2 V operating). Bypass VBUS to GND with at least 1-µF ceramic capacitor placed close to the IC.
24	D+	bidirectional	Positive USB data line. Used for USB host/charging port detection (BC1.2), including data contact detection (DCD) and secondary detection.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	VQFN-24-EP(4x4)
Category	PMIC
Pins	24

Ordering variants

Same part, different packaging or reel option.

BQ25883RGER

CAD (KiCad official)

Symbol: BQ25883RGER
Footprint: Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.7x2.7mm
3D model: VQFN-24-EP(4x4) (KiCad packages3D, STEP)

Provenance

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

Datasheet: Texas Instruments datasheet (86 pp, sha256 d65790066f0d6360, retrieved 2026-08-17, tier: manufacturer)
Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF