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WL2805E28-5

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by Ray

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

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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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WL2805E28-5

WILLSEMI Will Semicon · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5L

WL2805E28-5 from WILLSEMI Will Semicon, in a SOT-23-5L. 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 range 2.3V to 5.5V (absolute max 6.0V). Decouple with a 1µF ceramic capacitor to GND close to the pin.
2 GND power_in Ground reference for the regulator. Connect to system ground.
3 CE input Chip Enable, active high. VENH ≥ 1.2V enables the regulator; VENL ≤ 0.4V shuts it down (ISHDN ≤ 1µA). VEN range −0.3V to VIN. Do not float.
4 NC unconnected Not connected internally. May be left floating or tied to GND for mechanical stability.
5 VOUT power_out Regulated output pin. Fixed 2.8V (±2%) for the -28 option, capable of 250mA (Vout > 2V spec applies). Requires a 1µF ceramic output capacitor to GND for stability. Includes output short-circuit protection (ILIM ≈ 150mA).

Key specifications

Parameter Value
Manufacturer WILLSEMI Will Semicon
Package SOT-23-5L
Category PMIC
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • WL2805E28-5/TR
  • WL2805E28-5E12-5/TR
  • WL2805E28-5E15-5/TR
  • WL2805E28-5E18-5/TR
  • WL2805E28-5E25-5/TR
  • WL2805E28-5E30-5/TR
  • WL2805E28-5E33-5/TR
  • WL2805E28-5N12-3/TR
  • WL2805E28-5N15-3/TR
  • WL2805E28-5N18-3/TR
  • WL2805E28-5N20-3/TR
  • WL2805E28-5N25-3/TR
  • WL2805E28-5N28-3/TR
  • WL2805E28-5N30-3/TR
  • WL2805E28-5N33-3/TR

CAD (KiCad official)

  • Symbol: WL2805E28-5
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5L (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: WILLSEMI Will Semicon datasheet (9 pp, sha256 86f5bf274ec38b62, 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