component
LK112M33TR
Public Made by Adomby adom
STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5. 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
markdownLK112M33TR
STMicroelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5
LK112M33TR from STMicroelectronics, in a SOT-23-5. 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 | SHDN | input | Shutdown input that disables the regulator when connected to GND or positive voltage less than 0.6 V, and enables the output when voltage is above 1.8 V. |
| 2 | GND | power_in | Ground pin internally connected to the die attach flag to decrease the total thermal resistance and increase the package ability to dissipate power. |
| 3 | Bypass | passive | Bypass pin for 0.1 µF capacitor to improve the noise performance and reduce output noise to 30 µVrms at 10 Hz to 80 kHz. |
| 4 | OUT | output | Output port providing 3.3 V regulated voltage with output current up to 150 mA and low-dropout of 0.35 V maximum at 150 mA. |
| 5 | IN | power_in | Input port with operative input voltage from VOUT + 0.5 V to 14 V for VOUT > 2 V, or from 2.5 V to 14 V for VOUT < 2 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |
CAD (KiCad official)
- Symbol:
LK112M33TR - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
lk112m33tr-etched.step/lk112m33tr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lk112m33tr.step/lk112m33tr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (18 pp, sha256
fc1c9dfacf62927c, retrieved 2026-09-23, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).