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ETA9640E8A

Public Made by Adom

by adom

etasolution Battery Management, ESOP8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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ETA9640E8A

etasolution · Battery Management · ESOP8

ETA9640E8A from etasolution, in a ESOP8. 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 ACIN input Charger input pin that connects to an AC adaptor or a USB charger output.
2 BAT power_in Battery input pin that should be bypassed to GND with a 10uF or greater ceramic capacitor.
3 EN input Enable pin that must be driven high to enable the IC, and is disabled when driven low or left floating.
4 SW output Switching node of the switching regulator that connects through a 1uH to 4.7uH inductor to the positive terminal of the battery.
5 OUT power_out Output pin that should be bypassed to ground closely with a 22uF or larger ceramic capacitor.
6 GP power_in Power ground pin for the IC.
7 LED output Pin that drives the LED for battery quantity display or torch lighting, with a stated LED sink current of 5 mA.
8 ISET passive Charge current set pin where a resistor Rset connected to GND sets the fast charge current as Icharge = 1000/Rset (A).
9 GA passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer etasolution
Package ESOP8
Category Power Management (PMIC)
Pins 9

CAD (KiCad official)

  • Symbol: ETA9640E8A
  • Footprint: Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm
  • 3D model: ESOP8 (KiCad packages3D, STEP)
  • 3D model files: eta9640e8a-etched.step / eta9640e8a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); eta9640e8a.step / eta9640e8a.glb are the bare package body.

Provenance

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

  • Datasheet: etasolution datasheet (5 pp, sha256 014ca14220df5b10, 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