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wl9004s5-18

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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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WL9004S5-18

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

WL9004S5-18 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 5.5V (absolute max 6.5V). Must be closely decoupled to GND with a ≥1µF ceramic capacitor placed as close as possible to the device to assure input stability and low noise.
2 GND power_in Device ground reference. Return path for input and output capacitors; route as a wide, short copper trace back to this pin to minimize parasitic inductance and resistance during transients.
3 EN input Enable control input, active high. VCEH ≥ 1.2V enables the regulator; VCEL ≤ 0.4V shuts it down. Has an internal ~1MΩ pull-down resistor (0.8-1.3MΩ). Do not leave EN floating.
4 NC unconnected No Connect. Not internally bonded; leave floating or tie to GND at the designer's discretion.
5 VOUT power_out Regulated 1.8V output pin (WL9004S5-18 variant), ±2% accuracy, up to 500mA output current with 650mA typical current limit. A ≥1µF low-ESR ceramic capacitor (X7R/X5R) must be connected from this pin to GND for stability; place as close as possible to VOUT and GND pins.

Key specifications

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

Ordering variants

  • WL9004S5-18S5-12
  • WL9004S5-18S5-15
  • WL9004S5-18
  • WL9004S5-18S5-25
  • WL9004S5-18S5-28
  • WL9004S5-18S5-30
  • WL9004S5-18S5-33

CAD (KiCad official)

  • Symbol: WL9004S5-18
  • 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 (None pp, sha256 77b547b1c78ae4b9, 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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