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Contents

README

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BRCL4056BSE

Foshan Blue Rocket Elec · Battery Management · ESOP-8

BRCL4056BSE from Foshan Blue Rocket Elec, in a ESOP-8. 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 TEMP input External temperature sensing pin; the datasheet uses TEMP for battery temperature fault detection and for the no-battery indication (TEMP=GND).
2 PROG passive Charge current regulator pin; a single resistor from PROG to GND sets the constant charge current, with PROG at 1.0V in high-current mode and 0.1V in trickle mode per the electrical characteristics.
3 GND power_in Chip ground.
4 VDD power_in External DC 5V input; the operating input voltage range is 4V to 6V, with undervoltage lockout threshold of 3.7V (200mV hysteresis).
5 BAT power_out Battery connection pin that supplies the charge current to the cell; it regulates to a preset 4.20V float voltage with ±1% accuracy and the charger enters trickle charge below 2.8V.
6 STDBY output Open-drain battery charge-complete indicator; it is pulled low when the charge cycle terminates at 10% of the programmed charge current.
7 CHRG output Open-drain charging indicator; it is pulled low while a charge cycle is in progress and goes high-impedance when charging terminates.
8 NC unconnected Vacant pin, not connected.
9 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Foshan Blue Rocket Elec
Package ESOP-8
Category Power Management (PMIC)
Pins 9

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Input voltage range VDD 4 5 6 V 4
Float (charge termination) voltage VBAT 4.158 4.2 4.242 V VDD=5V 4
BAT reverse (backflow) current IBAT 0.5 5 μA Vcc=3.5V, Vbat=4.2V 4

CAD (KiCad official)

  • Symbol: BRCL4056BSE
  • Footprint: Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm
  • 3D model: ESOP-8 (KiCad packages3D, STEP)
  • 3D model files: brcl4056bse-etched.step / brcl4056bse-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); brcl4056bse.step / brcl4056bse.glb are the bare package body.

Provenance

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

  • Datasheet: Foshan Blue Rocket Elec datasheet (8 pp, sha256 b1b35f22eafe8448, retrieved 2026-10-21, 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: 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).

Datasheet PDF