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ETA1039S2G

Public Made by Adom

by adom

ETA(钰泰) DC-DC Converters, SOT-23-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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ETA1039S2G

ETA(钰泰) · DC-DC Converters · SOT-23-6

ETA1039S2G from ETA(钰泰), in a SOT-23-6. 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 OUT power_out Output pin; bypass with a 22μF or larger ceramic capacitor placed closely between this pin and GND.
2 GND power_in Ground pin.
3 EN input Enable pin: drive high to enable the part and low to disable it; the datasheet specifies EN input low max 0.6V and high min 1.5V.
4 IN power_in Input supply voltage; bypass with a 4.7μF ceramic capacitor to GND.
5 ISET passive Current limit setting pin: a resistor Rset to GND sets the input peak current, and an additional resistor R1 from VIN to ISET gives a constant output current limit.
6 SW output Inductor connection; connect an inductor between SW and the input. SW voltage is rated -0.3V to 5.5V absolute maximum.

Key specifications

Parameter Value
Manufacturer ETA(钰泰)
Package SOT-23-6
Category Power Management (PMIC)
Pins 6

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
VOUT Output Voltage VOUT 4.97 5.07 5.17 V 2
Switching Frequency 0.7 1 1.3 MHz 2
EN Input Current -1 0 1 μA 2
Quiescent Current 40 80 μA EN=IN, No load, Not switching 2
Shutdown Supply Current at VIN 0.5 5 μA VEN =GND 2
NMOS Switch Current Limit 2.2 2.8 A 2
SW Voltage -0.3 5.5 V 2
All Other PIN Voltages -0.3 5 V 2
Operating Temperature Range -40 85 °C 2
Storage Temperature Range -55 150 °C 2
ESD HBM (Human Body Model) 2 KV 2
ESD MM (Machine Model) 200 V 2
Thermal Resistance Junction-to-Case, SOT23-6 JC 90 °C/W 2

CAD (KiCad official)

  • Symbol: ETA1039S2G
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6 (KiCad packages3D, STEP)
  • 3D model files: eta1039s2g-etched.step / eta1039s2g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); eta1039s2g.step / eta1039s2g.glb are the bare package body.

Provenance

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

  • Datasheet: ETA(钰泰) datasheet (6 pp, sha256 ea5c8f855c2a0284, 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