component

LK112SM18TR

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.

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LK112SM18TR

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

LK112SM18TR 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 SHDN input Shutdown control input; disables the regulator when connected to GND or positive voltage lower than 0.6 V; maximum input voltage 16 V.
2 GND power_in Ground pin; internally connected to die attach flag to decrease total thermal resistance and increase package power dissipation ability.
3 Bypass passive Bypass pin; connect 0.1 µF capacitor to reduce output noise to 30 µVrms and improve thermal noise performance.
4 OUT power_out Output port; regulated voltage of 1.8 V nominal with ±2% tolerance at 25 °C, output current up to 200 mA.
5 IN power_in Input port; operative input voltage from 2.5 to 14 V for this 1.8 V output variant; maximum input voltage rating 16 V.

Key specifications

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

CAD (KiCad official)

  • Symbol: LK112SM18TR
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5L (KiCad packages3D, STEP)
  • 3D model files: lk112sm18tr-etched.step / lk112sm18tr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lk112sm18tr.step / lk112sm18tr.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (17 pp, sha256 b450e613a8c75148, retrieved 2026-10-07, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-4-5-20251001 (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