component

ETA3409S2F

Public Made by Adom

by adom

etasolution DC-DC Converters, SOT23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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ETA3409S2F

etasolution · DC-DC Converters · SOT23-5

ETA3409S2F from etasolution, in a SOT23-5. 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 EN input Enable input; EN input low voltage is 0.4V max and high voltage is 1.5V min, with EN input current of 1µA max.
2 GND power_in Ground pin, connected to the input and output capacitor returns and the feedback divider.
3 SW output Switching node connected to the inductor, with internal NMOS/PMOS switches, PMOS current limit of 4A typ and SW leakage of 10µA max.
4 IN power_in Input supply pin operating from 2.4V to 7.3V with UVLO rising threshold of 2.4V typ, absolute maximum 9V.
5 FB input Feedback input regulated to 0.6V typ (0.588V to 0.612V) via the R1/R2 divider, with FB input current of 1µA max.

Key specifications

Parameter Value
Manufacturer etasolution
Package SOT23-5
Category Power Management (PMIC)
Pins 5

CAD (KiCad official)

  • Symbol: ETA3409S2F
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT23-5 (KiCad packages3D, STEP)
  • 3D model files: eta3409s2f-etched.step / eta3409s2f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); eta3409s2f.step / eta3409s2f.glb are the bare package body.

Provenance

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

  • Datasheet: etasolution datasheet (7 pp, sha256 e1efa18cbd1fce87, retrieved 2026-10-09, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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