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LGS4084HB6

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Legend Si Battery Management, SOT-23-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LGS4084HB6

Legend Si · Battery Management · SOT-23-6

LGS4084HB6 from Legend Si, in a SOT-23-6. 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 CHRG output Charging-status LED drive pin, with an absolute maximum rating of -0.3V to 28V.
2 GND power_in Ground reference for the charger; the layout guidance calls for a ground plane with vias to ground.
3 BAT power_out Battery connection and charge output, with an absolute maximum rating of -0.3V to 6V and constant-voltage regulation of 4.15V to 4.25V (4.20V typical) for the 4.2V version.
4 VCC power_in Input supply pin with a 4V to 6V operating range (5V typical), an overvoltage threshold (VOVP) of 6.25V, and an absolute maximum rating of -0.3V to 28V.
5 FULL output Full-charge status LED drive pin; the datasheet gives no separate absolute rating for this pin.
6 PROG output Charge-current program pin with a 1V (1%) reference, where the charge current is IBAT = (VPROG/RPROG) × 1000, and an absolute maximum rating of -0.3V to 6V.

Key specifications

Parameter Value
Manufacturer Legend Si
Package SOT-23-6
Category Power Management (PMIC)
Pins 6

CAD (KiCad official)

  • Symbol: LGS4084HB6
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6 (KiCad packages3D, STEP)
  • 3D model files: lgs4084hb6-etched.step / lgs4084hb6-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lgs4084hb6.step / lgs4084hb6.glb are the bare package body.

Provenance

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

  • Datasheet: Legend Si datasheet (12 pp, sha256 5b0673a38e5092e6, retrieved 2026-10-09, tier: lcsc)
  • 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