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wl2803e28-5

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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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WL2803E28-5

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

WL2803E28-5 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, 2.5 V to 5.5 V operating range (absolute max -0.3 V to 6.5 V). Bypass to GND with a 4.7 µF ceramic capacitor placed close to the pin.
2 GND power_in Device ground reference for both the input supply and output regulation feedback path.
3 EN input Active-high enable input. VENH ≥ 1.2 V turns the regulator on; VENL ≤ 0.4 V forces shutdown (ISHDN ≈ 0.1 µA typ). Do not leave floating.
4 NC unconnected No internal connection. Leave floating or tie to GND for mechanical strain relief.
5 VOUT power_out Regulated 2.8 V output (WL2803E28-5), up to 500 mA continuous with 130 mV typical dropout. Requires a 4.7 µF ceramic output capacitor (≥10 µF recommended when VOUT < 2 V).

Key specifications

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

Ordering variants

  • WL2803E28-5/TR

CAD (KiCad official)

  • Symbol: WL2803E28-5
  • 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 (None pp, sha256 9792bb099f4840d0, 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

Symbol & Footprint

Schematic Symbol

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PCB Footprint

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Datasheet

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