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WL9003S5-33

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by Ray

WPMtek Wei Pan Microelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5L. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Datasheet

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Contents

README

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WL9003S5-33

WPMtek Wei Pan Microelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5L

WL9003S5-33 from WPMtek Wei Pan Microelectronics, 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 Supply input pin, 2.0V to 6.0V operating range (7.0V abs max). Must be decoupled to GND with a 1µF or greater ceramic capacitor placed as close as possible to the device.
2 GND power_in Device ground reference. Should be routed with wide, short copper trace back to input and output capacitor grounds.
3 EN input Enable control input, active-high (V_IH ≥ 1.5V, V_IL ≤ 0.3V). Internal ~1MΩ pull-down resistor to GND; do not leave floating. EN input current is typ 0.01µA.
4 NC unconnected No Connect. Leave unconnected or tie to GND; no internal function.
5 VOUT power_out Regulated 3.3V output pin, ±2% accuracy, up to 300mA output current with current limit typ 500mA and short-circuit current typ 100mA. Requires a 1µF or greater low-ESR ceramic capacitor (X5R/X7R) to GND for stability.

Key specifications

Parameter Value
Manufacturer WPMtek Wei Pan Microelectronics
Package SOT-23-5L
Category PMIC
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • WL9003S5-33

CAD (KiCad official)

  • Symbol: WL9003S5-33
  • 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: WPMtek Wei Pan Microelectronics datasheet (10 pp, sha256 64f27196ac0b528b, 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