component
LK112M50TR
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
markdownLK112M50TR
STMicroelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5L
LK112M50TR 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 input disables the regulator when it is connected to GND or to a positive voltage less than 0.6 V. |
| 2 | GND | power_in | Ground pin, internally connected to the die attach flag to decrease the total thermal resistance and increase the package's ability to dissipate power. |
| 3 | Bypass | passive | Bypass pin; a 0.1 µF capacitor on this pin improves the noise performance. |
| 4 | OUT | power_out | Output port; the regulated output voltage depends on the order code and ranges from 1.5 V to 8.0 V per Table 1. |
| 5 | IN | power_in | Input port; operative input voltage is VOUT + 0.5 V to 14 V (for VOUT > 2 V) or 2.5 V to 14 V (for VOUT < 2 V), with an absolute maximum DC input voltage of 16 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOT-23-5L |
| Category | Power Management (PMIC) |
| Pins | 5 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Output voltage tolerance | VO | -2 | 2 | % | IO = 30mA | 6 | |
| Quiescent current, on mode | Iq | 175 | 250 | µA | On mode (except ISHDN) | 6 | |
| Quiescent current, off mode | Iq | 0 | 0.1 | µA | Off mode, VI = 8V, VSHDN = 0V | 6 | |
| Line regulation | ΔVO | 0.7 | 20 | mV | VI = VO+1V to VO+6V, VO ≤ 5.6V | 6 | |
| Load regulation | ΔVO | 15 | 30 | mV | IO = 1 to 60mA | 6 | |
| Load regulation | ΔVO | 25 | 90 | mV | IO = 1 to 150mA | 6 | |
| Dropout voltage | Vd | 0.17 | 0.24 | V | IO = 60mA (1) | 6 | |
| Dropout voltage | Vd | 0.29 | 0.35 | V | IO = 150mA (1) | 6 | |
| Shutdown input current | ISHDN | 12 | 35 | µA | VSHDN = 1.8V, output on | 6 | |
| Shutdown input logic, output on | VSHDN | 1.8 | V | Output on | 6 | ||
| Shutdown input logic, output off | VSHDN | 0.6 | V | Output off | 6 | ||
| Output current limit | IO | 150 | mA | 6 | |||
| Supply voltage rejection | SVR | 55 | dB | VI = VO+1.5V, CBYP = 0.1µF; CO = 10µF, f = 400Hz, IO = 30mA | 6 | ||
| Output noise voltage | eN | 30 | µVrms | B = 10Hz to 80kHz, CBYP = 0.1µF; CO = 10µF, VI = VO+1.5V, IO = 60mA | 6 | ||
| Output voltage temperature coefficient | ΔVO/TJ | 0.09 | mV/°C | IO = 10mA | 6 | ||
| DC input voltage | VI | 16 | V | 5 | |||
| DC input voltage (shutdown pin) | VSHDN | 16 | V | 5 | |||
| Storage temperature range | TSTG | -55 | 150 | °C | 5 | ||
| Operating junction temperature range | TOP | -40 | 125 | °C | 5 | ||
| Operative input voltage | VI | 14 | V | For VOUT > 2 V; minimum is VOUT + 0.5 V | 1 | ||
| Thermal resistance junction-case | RthJC | 81 | °C/W | SOT23-5L | 5 | ||
| Thermal resistance junction-ambient | RthJA | 255 | °C/W | SOT23-5L | 5 |
CAD (KiCad official)
- Symbol:
LK112M50TR - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5L (KiCad packages3D, STEP)
- 3D model files:
lk112m50tr-etched.step/lk112m50tr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lk112m50tr.step/lk112m50tr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (18 pp, sha256
fc1c9dfacf62927c, retrieved 2026-10-11, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(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).