BL8576CS8TR from BL Shanghai Belling, in a ESOP-8. 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	NC	unconnected	No internal connection. Leave floating or tie to GND as appropriate for the PCB layout.
2	PROG	bidirectional	Charge current program, monitor, and shutdown pin. Regulates to 1V in constant-current mode; charge current IBAT = (VPROG/RPROG)·1000, so a 1% resistor from PROG to GND sets IBAT (RPROG = 2k → ~500mA, 10k → ~100mA). Floating PROG raises it above the ~1.21V manual shutdown threshold via a 3μA pull-up, dropping ICC to ~25μA; internally clamped to ~2.4V (5mA absolute max).
3	GND	power_in	Device ground reference. Also the primary thermal path through the exposed pad / lead frame; use wide copper pours and vias to maximize allowed charge current.
4	VCC	power_in	Positive input supply, 4.25V to 6.0V (absolute max 6V). Bypass with at least 1μF to GND. Charging is inhibited by UVLO (~2.9V rising, 200mV hysteresis) and by the VCC-VBAT comparator (charger enters shutdown when VCC drops to within ~80mV of VBAT).
5	BAT	power_out	Charge current output to the Li-ion cell. Regulates to a 4.2V ±1% float voltage set by an internal precision divider; sources up to 1A of charge current. Continuous short-circuit tolerant; recharge cycle restarts when VBAT falls ~100mV below VFLOAT.
6	STDBY	output	Open-drain standby status output. Pulled low when the battery is fully charged (charge terminated); high-impedance otherwise. Requires an external pull-up to indicate the high state.
7	~{CHRG}	output	Open-drain active-low charge status output. Pulled low (VOL ≤ 0.6V at 5mA) while a charge cycle is in progress; forced to high impedance when the BL8576 is in under-voltage lockout. Requires an external pull-up.
8	NC	unconnected	No internal connection. Leave floating or tie to GND as appropriate for the PCB layout.

Key specifications

Parameter	Value
Manufacturer	BL Shanghai Belling
Package	ESOP-8
Category	PMIC
Pins	8

Ordering variants

Same part, different packaging or reel option.

BL8576CS8TR

CAD (KiCad official)

Symbol: BL8576CS8TR
Footprint: Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm
3D model: ESOP-8 (KiCad packages3D, STEP)

Provenance

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

Datasheet: BL Shanghai Belling datasheet (10 pp, sha256 ca045d756481b601, retrieved 2026-08-17, tier: lcsc)
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