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docs brcl4054cme: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
viewers brcl4054cme: viewers · Ray
brcl4054cme-etched.fit.json brcl4054cme: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
brcl4054cme-etched.glb brcl4054cme: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC body… · Ray
brcl4054cme-etched.step brcl4054cme: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC body… · Ray
brcl4054cme.glb Publish 0.1.0 · Ray
brcl4054cme.kicad_mod Publish 0.1.0 · Ray
brcl4054cme.kicad_sym Publish 0.1.0 · Ray
brcl4054cme.lbr Publish 0.1.0 · Ray
brcl4054cme.step Publish 0.1.0 · Ray
package.json Publish 0.1.0 · Ray
page.json brcl4054cme: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC body… · Ray
README.md brcl4054cme: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray

BRCL4054CME

Foshan Blue Rocket Elec · Battery Management · SOT-23-5

BRCL4054CME from Foshan Blue Rocket Elec, in a SOT-23-5. 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 CHRG output Open-drain charge status output (active low). Strong pull-down (~10mA) via internal N-channel MOSFET during charging; weak ~20µA pull-down when charge terminated (AC present); high-impedance in UVLO. Absolute max -0.3 to 10V. Can sink up to 10mA to drive an LED.
2 GND power_in Device ground return. Also the primary thermal path via the ground lead to the PCB copper heat sink.
3 BAT power_out Charge current output to the single-cell Li-Ion battery. Regulates final float voltage to 4.2V (±1%). Supplies up to 500mA charge current; internal precision resistor divider (disconnected in shutdown) sets the float voltage. Absolute max -0.3 to 7V; short-circuit duration is continuous.
4 VCC power_in Positive input supply voltage, 4.25V to 6.5V (absolute max -0.3 to 10V). Provides power to the charger; must be bypassed with at least a 1µF capacitor. When VCC drops within 30mV of BAT, the device enters shutdown and IBAT drops below 2µA.
5 PROG bidirectional Charge-current program, charge-current monitor, and shutdown pin. A 1% resistor RPROG from PROG to GND sets ICHG = 1000V / RPROG (e.g. 2k → 500mA, 10k → 100mA). In constant-current mode this pin servos to 1V; IBAT = (VPROG/RPROG) × 1000. Floating the pin lets an internal 3µA pull-up drive PROG above the 1.21V shutdown threshold, forcing shutdown mode (ICC drops to 25µA). Pin is clamped to ~2.4V; driving beyond can draw up to 1.5mA.

Key specifications

Parameter Value
Manufacturer Foshan Blue Rocket Elec
Package SOT-23-5
Category PMIC
Pins 5

CAD (KiCad official)

  • Symbol: BRCL4054CME
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: brcl4054cme-etched.step / brcl4054cme-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); brcl4054cme.step / brcl4054cme.glb are the bare package body.

Provenance

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

  • Datasheet: Foshan Blue Rocket Elec datasheet (None pp, sha256 bdd23814d94e357d, 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