component
LK112SM18TR
Public Made by Adomby 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.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLK112SM18TR
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lk112sm18tr.step/lk112sm18tr.glbare 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, primaryclaude-haiku-4-5-20251001(text), consensusclaude-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).