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4A2D

Public Unreviewed

by Ray

Shenzhen Fuman Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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4A2D

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

4A2D from Shenzhen Fuman, 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 Voltage input. Operating range 2.0V to 6.0V. Bypass with a 1uF ceramic capacitor (CIN) to GND close to the pin.
2 GND power_in Ground reference for the regulator. Common return for input and output capacitors.
3 CE input Chip Enable. Drive high (VCEH >= 1.0V) to enable regulator; drive low (VCEL <= 0.7V) to shut down (shutdown current ~0.1uA typ). Do not leave floating.
4 NC unconnected No connect. Leave floating (typical application shows this pin unconnected).
5 VOUT power_out Regulated voltage output. Factory-set to 3.3V (±2%) for the 4A2D variant. Requires a 1uF ceramic output capacitor (CL) to GND. Max output current 500mA; short-circuit current ~150mA typ.

Key specifications

Parameter Value
Manufacturer Shenzhen Fuman
Package SOT-23-5
Category PMIC
Pins 5

Ordering variants

  • 4A2D

CAD (KiCad official)

  • Symbol: 4A2D
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
4a2d.step 85 KB You want the bare part, or you mark your own boards.
4a2d-etched.step 878 KB You want the part with 4A2D already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 227 faces against 102 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

  • Datasheet: Shenzhen Fuman datasheet (9 pp, sha256 2347c805ea8a986b, retrieved 2026-08-17, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • 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