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ETA9742E8A

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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ETA9742E8A

etasolution · Battery Management · ESOP8

ETA9742E8A 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 SW bidirectional Inductor connection: connect an inductor between SW and the regulator output.
2 LED output Battery level indication LED connection pin.
3 STAT output Charge status indication: STAT is pulled low while charging and is high impedance when charge is completed.
4 BST output Boost status indication: BST is pulled low in boost, pulled high when charging, and high impedance when entering no-load condition.
5 ISET passive Buck charging current setting pin: connect a resistor between this pin and analog ground to set the current level (Riset=56K gives 3A fast charge; Riset=91K gives 2A).
6 BAT bidirectional Battery pin: connect the battery to this pin, with a 10uF bypass capacitor.
7 OUT bidirectional Output pin: bypass with a 22uF or larger ceramic capacitor placed closely between this pin and GND.
8 PGND power_in Power ground pin.
9 AGND power_in Analog ground pin on the exposed pad; the datasheet says to connect the heat sink through vias to the GND plane on the backside.

Key specifications

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

CAD (KiCad official)

  • Symbol: ETA9742E8A
  • Footprint: Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm
  • 3D model: ESOP8 (KiCad packages3D, STEP)
  • 3D model files: eta9742e8a-etched.step / eta9742e8a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); eta9742e8a.step / eta9742e8a.glb are the bare package body.

Provenance

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

  • Datasheet: etasolution datasheet (5 pp, sha256 9311e782af8c1e36, 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