BRCL4056SE from Foshan Blue Rocket Elec, 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	TEMP	input	Battery temperature sense input. Connect to the output of an NTC thermistor on the battery pack. Charging is paused if V(TEMP) < 45%·VCC or > 80%·VCC (battery too hot/cold), and resumes when the voltage returns inside that window. Tie to GND to disable the temperature-monitoring function.
2	PROG	passive	Charge-current program and monitor pin. A resistor R_PROG from PROG to GND sets the charge current: precharge clamps V(PROG) to 0.1V and constant-current mode regulates V(PROG) to 1.0V, so I_BAT = (V_PROG / R_PROG) × 1000. The pin voltage can also be read to monitor instantaneous charge current in all charge states.
3	GND	power_in	Device ground / power return.
4	VCC	power_in	Positive supply input, 4.5V-6.5V operating range (absolute max 10V). Powers the internal circuitry and the pass FET to the battery. When (VCC − V_BAT) falls below ~80mV, the part enters low-power sleep mode and BAT sink current drops below 2µA.
5	BAT	power_out	Battery connection / charge output. Sources charge current to the single-cell Li+ pack and regulates it to 4.2V float. Draws less than 2µA from the battery when the part is disabled or in sleep mode.
6	STDBY	output	Open-drain charge-complete (standby) indicator. Internal switch pulls low when charging has terminated (battery full); otherwise the pin is high-impedance. Absolute max sink current 10mA - typically drives an LED to VCC through a series resistor.
7	CHRG	output	Open-drain charging-in-progress indicator. Internal switch pulls low while the charger is actively delivering current to the battery; otherwise the pin is high-impedance. Absolute max sink current 10mA - typically drives an LED to VCC through a series resistor.
8	CE	input	Chip-enable input. Logic high enables normal charging operation; logic low forces the device into charge-disabled state. Compatible with TTL and CMOS logic levels (V_IH ≥ 1.5V, V_IL ≤ 0.4V).
9	EPAD	power_in	Exposed thermal pad on the package bottom. Must be soldered to a PCB ground copper plane to achieve the specified thermal performance and to provide electrical ground contact.

Key specifications

Parameter	Value
Manufacturer	Foshan Blue Rocket Elec
Package	ESOP-8
Category	PMIC
Pins	9

Ordering variants

BRCL4056SE

CAD (KiCad official)

Symbol: BRCL4056SE
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: Foshan Blue Rocket Elec datasheet (11 pp, sha256 be9b7b61a6cb5090, retrieved 2026-08-17, tier: lcsc)
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