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WL9100P3-30B

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WPMtek(Wei Pan Microelectronics) Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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WL9100P3-30B

WPMtek(Wei Pan Microelectronics) · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3L

WL9100P3-30B from WPMtek(Wei Pan Microelectronics), in a SOT-89-3L. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 GND power_in Ground; in PCB layout use a large copper area for thermal dissipation and route wide, short ground traces back from the input and output capacitors.
2 VIN power_in Power input accepting 3.0V to 36V (recommended 3.0V to 24V; absolute maximum -0.3V to 40V), decoupled with a ≥1µF ceramic capacitor to GND placed close to the device.
3 VOUT power_out Regulated 3.0V output (±2%) delivering up to 150mA, requiring a ≥10µF ceramic output capacitor (X7R/X5R) to GND for stability.

Key specifications

Parameter Value
Manufacturer WPMtek(Wei Pan Microelectronics)
Package SOT-89-3L
Category Power Management (PMIC)
Pins 3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Input Voltage VIN 3 36 V 5
Quiescent Current IQ 1.5 3 µA VIN = 12V, No Load 5
Output Voltage tolerance VOUT -2 2 % VIN = 12V, IOUT = 10mA (VOUT x 0.98 to VOUT x 1.02) 5
Output Current IOUT 150 mA 5
Dropout Voltage at 100mA VDROP 450 550 mV IOUT = 100mA, VOUT = VOUTNOM, 0.1V 5
Dropout Voltage at 150mA VDROP 700 800 mV VOUT=3.3V, IOUT = 150mA, VOUT = VOUTNOM, 0.1V 5
Load Regulation ΔVLOAD 0.03 0.05 %/mA VIN = VOUTNOM + 1V, 1mA ≤ IOUT ≤ 100mA 5
Line Regulation ΔVLINE 0.01 0.02 %/V VOUTNOM + 1V ≤ VIN ≤ 24V, IOUT = 1mA 5
Current Limit ILIMIT 200 mA 5
Short Current ISHORT 90 mA 5
Thermal Shutdown Temperature TOTSD 150 °C 5
Thermal Shutdown Hysteresis THYOTSD 20 °C 5
Output Noise Voltage Von 100 µVrms COUT =10uF, IOUT =30mA, BW = 10Hz~100kHz 5
Supply Input Voltage VIN -0.3 40 V 4
VOUT to VIN VOUT_VIN -35 -0.3 V 4
Regulated Output Voltage VOUT -0.3 6 V 4
Power Dissipation SOT89-3 PD 750 mW TA=+25℃, SOT89-3 4
Thermal Resistance Junction to air SOT89-3 θJA 165 °C/W SOT89-3 4
HBM ESD -4000 4000 V Human Body Model 4
CDM ESD -2000 2000 V Charged Device Mode 4
Machine Mode ESD 200 V Machine Mode 4
Storage Temperature Range TSTG -65 150 °C 4
Operating Junction Temperature TJ 150 °C 4
Lead Temperature TLEAD 260 °C Soldering 10s 4
Operating Ambient Temperature -40 85 °C 4
Input Voltage VIN 3 24 V 4
Output Voltage VOUT 1.8 5 V 4

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts copper and output capacitors must be back to the WL9100 ground pin using as wide and as short of a copper trace as is practical.Connections using long trace lengths, narrow trace widths, and/or 8

CAD (KiCad official)

  • Symbol: WL9100P3-30B
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89-3L (KiCad packages3D, STEP)
  • 3D model files: wl9100p3-30b-etched.step / wl9100p3-30b-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); wl9100p3-30b.step / wl9100p3-30b.glb are the bare package body.

Provenance

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

  • Datasheet: WPMtek(Wei Pan Microelectronics) datasheet (8 pp, sha256 6437b9fd93db9e0e, retrieved 2026-10-27, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF