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Contents

README

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LDLN025M30R

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

LDLN025M30R from STMicroelectronics, 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 LDO supply voltage input. Operating range 1.5 V to 5.5 V; absolute max -0.3 V to 7 V. Requires a 1 µF ceramic input capacitor to GND.
2 GND power_in Ground reference for the regulator.
3 EN input Enable input. Drive high (VEN = high) to turn the device on, low to place it in shutdown (<1 µA). Internally pulled down via a 1 MΩ resistor. Absolute max -0.3 V to VIN + 0.3 V.
4 NC unconnected Not internally connected. May be left floating or tied to GND.
5 VOUT power_out Regulated LDO output. Fixed 3.0 V (part suffix '30'), up to 250 mA. Requires a 1 µF ceramic output capacitor to GND for stability. Typical dropout 120 mV at 250 mA.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package SOT-23-5L
Category PMIC
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • LDLN025M30RM
  • LDLN025M30RQ

CAD (KiCad official)

  • Symbol: LDLN025M30R
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5L (KiCad packages3D, STEP)
  • 3D model files: ldln025m30r-etched.step / ldln025m30r-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ldln025m30r.step / ldln025m30r.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (27 pp, sha256 b71eeee4c541f04a, 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