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ETA3425S2F

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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ETA3425S2F

etasolution · DC-DC Converters · SOT23-5

ETA3425S2F 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 pin: pull high to enable and pull low to disable, with EN input low voltage of 0.4V max and EN input high voltage of 1.0V min.
2 GND power_in Ground reference pin; the datasheet asks that the GND trace be routed underneath the IC body.
3 SW output Inductor connection: connect a 2.2uH inductor between SW and the regulator output, with a switch-node leakage current of 1uA (typ) at VOUT=7V.
4 VIN power_in Supply voltage input, rated 2.6V to 7V, bypassed with a 10uF ceramic capacitor to GND and placed nearest to the VIN and GND pins.
5 FB input Feedback voltage pin: connect an external resistor divider from the output to FB and GND to set the output between 1.11V and VIN.

Key specifications

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

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
IN, SW, OUT, EN Voltage -0.3 7.5 V 2
Input Voltage Range 2.6 7 V 2
FB Voltage 1.094 1.11 1.126 V 2
Switching Frequency 0.8 1.4 2 MHz 2
Operating Temperature Range -40 85 °C 2
Storage Temperature Range -55 150 °C 2
ESD HBM (Human Body Mode) 2 KV Human Body Model 2
ESD MM (Machine Mode) 200 V Machine Model 2
Input Supply Current 1.8 3 μA No Load, RFB_G =10Mohm 2
Input UVLO Rising 2.25 V Hysteresis=170mV 2
Input Shutdown Current 0.1 μA 2
Load Regulation 0.4 %/A 2
Line Regulation 0.14 %/V VIN =2.7 to 5.5V 2
NMOS Switch On Resistance 200 mΩ ISW =200mA 2
PMOS Switch On Resistance 300 mΩ ISW =200mA 2
PMOS Switch Current Limit 1 A 2
Soft-Start Time 120 μs 2
SW Leakage Current 1 μA VOUT=7V, VSW=0 or 7V, EN= GND 2
EN Input Current 1 μA EN= GND 2
EN Input Low Voltage 0.4 V 2
EN Input High Voltage 1 V 2
Thermal Resistance θJA (SOT23-5) θJA 190 °C/W 2

CAD (KiCad official)

  • Symbol: ETA3425S2F
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT23-5 (KiCad packages3D, STEP)
  • 3D model files: eta3425s2f-etched.step / eta3425s2f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); eta3425s2f.step / eta3425s2f.glb are the bare package body.

Provenance

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

  • Datasheet: etasolution datasheet (6 pp, sha256 2f48144e2fee269c, retrieved 2026-10-17, 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