component

LGS4056HEP

Public Made by Adom

by adom

Legend Si Battery Management, ESOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management (pmic)lgs4056hepfactory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs lgs4056hep: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
viewers lgs4056hep: viewers · Ray 1mo ago
lgs4056hep-etched.fit.json lgs4056hep: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
lgs4056hep-etched.glb lgs4056hep: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
lgs4056hep-etched.step lgs4056hep: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
lgs4056hep.glb Publish 0.1.0 · Ray 1mo ago
lgs4056hep.kicad_mod Publish 0.1.0 · Ray 1mo ago
lgs4056hep.kicad_sym Publish 0.1.0 · Ray 1mo ago
lgs4056hep.lbr Publish 0.1.0 · Ray 1mo ago
lgs4056hep.step Publish 0.1.0 · Ray 1mo ago
package.json lgs4056hep: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray 1mo ago
page.json lgs4056hep: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray 1mo ago
README.md Initial commit: component/lgs4056hep · Ray 1mo ago

LGS4056HEP

Legend Si · Battery Management · ESOP-8

LGS4056HEP from Legend Si, 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 detection input; charging pauses if voltage is below 45% VCC (over-temperature) or above 80% VCC (under-temperature); ground to disable monitoring.
2 PROG input Charging current programming input; set charging current with external 1% precision resistor to ground where I_BAT = 1000/R_PROG above 300mA or I_BAT = 900/R_PROG below 300mA.
3 GND power_in Chip ground.
4 VCC power_in Power supply input rated 5V nominal; requires minimum 10µF ceramic bypass capacitor to GND; withstands surge voltage up to 28V with internal 24V MOSFET.
5 BAT power_out Battery charging output with maximum programmable charging current to 1A; requires minimum 10µF capacitor to ground.
6 DONE tri_state Charging complete indicator; open-drain output pulls low when battery reaches full charge voltage of 4.2V.
7 CHRG tri_state Charging in progress indicator; open-drain output pulls low during constant current and constant voltage charging phases.
8 CE input Charging enable control input; high level enables charging, low level disables charging and reduces quiescent current to ≤40µA.
9 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Legend Si
Package ESOP-8
Category Power Management (PMIC)
Pins 9

CAD (KiCad official)

  • Symbol: LGS4056HEP
  • Footprint: Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm
  • 3D model: ESOP-8 (KiCad packages3D, STEP)
  • 3D model files: lgs4056hep-etched.step / lgs4056hep-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lgs4056hep.step / lgs4056hep.glb are the bare package body.

Provenance

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

  • Datasheet: Legend Si datasheet (16 pp, sha256 ca42b5598b7bb228, retrieved 2026-09-18, 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 0.2, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-4-6 (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