component
LM2931AZ50R
Public Made by Adomby adom
STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-92. 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
markdownLM2931AZ50R
STMicroelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-92
LM2931AZ50R from STMicroelectronics, in a TO-92. 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 | VOUT | power_out | Regulated 5 V output; 4.81 V min / 5.19 V max at 25 °C, 4.75 V min / 5.25 V max over IO = 100 mA and TJ = −40 to 125 °C; maximum output current 100 mA with internal current and thermal limiting. |
| 2 | GND | power_in | Ground reference for the regulator; quiescent current into this pin is 2.5 mA typ / 30 mA max at IO = 100 mA. |
| 3 | VIN | power_in | DC input voltage, 6 V to 26 V maximum operating; load-dump transient up to 60 V (τ < 100 ms) causes automatic shutdown; reverse transient protection up to −50 V (τ < 100 ms); dropout voltage 90 mV typ / 200 mV max at IO = 10 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | TO-92 |
| Category | Power Management (PMIC) |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
LM2931AZ50R - Footprint:
Package_TO_SOT_THT:TO-92_Inline - 3D model: TO-92 (KiCad packages3D, STEP)
- 3D model files:
lm2931az50r-etched.step/lm2931az50r-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2931az50r.step/lm2931az50r.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (26 pp, sha256
8d28778e66f6f19e, retrieved 2026-09-26, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-sonnet-4-6(text+vision), consensusclaude-opus-4-7(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).