component

LDK120M31R

Public Made by Adom

by adom

STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management (pmic)ldk120m31rfactory-2.0.0extractor-text
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Generated by kicad-footprint-generator · KiCad file format 20260206
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LDK120M31R

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

LDK120M31R from STMicroelectronics, in a SOT-23-5L. 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 IN power_in Input voltage of the LDO; operating input range is 1.9 V to 5.5 V, and the absolute maximum DC input is -0.3 V to 7 V.
2 GND power_in Common ground reference for the regulator; all voltages are referred to GND.
3 EN input Enable logic input where Low = shutdown and High = active; logic low is 0.4 V max and logic high is 1.2 V min for VIN = 1.9 V to 5.5 V.
4 BYP passive Bypass capacitor pin for noise reduction on the fixed-output version; the capacitor is optional, and if not used the pin must be left floating with no routing on the board.
5 OUT power_out Regulated output voltage of the LDO, guaranteeing 200 mA output current and stable with a ceramic output capacitor of 1 µF (1 to 22 µF range).

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package SOT-23-5L
Category Power Management (PMIC)
Pins 5

CAD (KiCad official)

  • Symbol: LDK120M31R
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5L (KiCad packages3D, STEP)
  • 3D model files: ldk120m31r-etched.step / ldk120m31r-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ldk120m31r.step / ldk120m31r.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (24 pp, sha256 1684d802fa69801e, retrieved 2026-10-08, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-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