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Contents

README

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ETA5050V33S2F

etasolution · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5

ETA5050V33S2F from etasolution, in a SOT-23-5. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VIN power_in Input supply pin. Operating input voltage range 1.6V to 6.0V (absolute max -0.3V to 6V). Bypass with a 2.2µF ceramic capacitor to GND close to the pin.
2 GND power_in Ground pin. Common return for input, output, and enable references.
3 EN input Enable pin. Drive high (VIH >= 1.4V) to enable the regulator; drive low (VIL <= 0.4V) to disable and enter <1µA shutdown. Can be tied to VIN if not used. Internal 3MΩ resistor to GND; input current ~1µA at VEN=3V.
4 NC unconnected Not connected. Leave floating or tie to GND per board layout preference.
5 VOUT power_out Regulator output. Fixed 3.3V output (per V33 ordering code), ±2% accuracy, 500mA continuous current capability. Bypass with a 1µF ceramic capacitor to GND. Optional internal 1kΩ discharge resistor (present on 'D' suffix variants; the V33 suffix indicates no discharge).

Key specifications

Parameter Value
Manufacturer etasolution
Package SOT-23-5
Category PMIC
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • ETA5050V33S2FV10S2F
  • ETA5050V33S2FV12S2F
  • ETA5050V33S2FV15S2F
  • ETA5050V33S2FV18S2F
  • ETA5050V33S2FV25S2F
  • ETA5050V33S2FV27S2F
  • ETA5050V33S2FV28S2F
  • ETA5050V33S2FV30S2F
  • ETA5050V33S2F
  • ETA5050V33S2FD10S2F
  • ETA5050V33S2FD12S2F
  • ETA5050V33S2FD15S2F
  • ETA5050V33S2FD18S2F
  • ETA5050V33S2FD25S2F
  • ETA5050V33S2FD27S2F
  • ETA5050V33S2FD28S2F
  • ETA5050V33S2FD30S2F
  • ETA5050V33S2FD33S2F

CAD (KiCad official)

  • Symbol: ETA5050V33S2F
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: eta5050v33s2f-etched.step / eta5050v33s2f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); eta5050v33s2f.step / eta5050v33s2f.glb are the bare package body.

Provenance

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

  • Datasheet: etasolution datasheet (9 pp, sha256 06d4234c99223a7f, retrieved 2026-08-17, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF