component
L4931ABD50-TR
Public Made by Adomby adom
STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SO-8. 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
markdownL4931ABD50-TR
STMicroelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SO-8
L4931ABD50-TR from STMicroelectronics, in a SO-8. 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 | VOUT | output | Regulated output voltage pin (5 V nominal for the ABxx50 version), rated for output current up to 250 mA with only a 2.2 µF output capacitor required for stability. |
| 2 | GND | power_in | Ground/common reference pin. |
| 3 | GND | power_in | Ground/common reference pin. |
| 4 | NC | unconnected | Not internally connected pin. |
| 5 | INHIBIT | input | TTL-compatible logic shutdown control input; logic low (VIL) up to 0.8 V turns the regulator on and logic high (VIH) from 2 V to VI turns it off, with a control input current of about 10 µA at VI = VC = 6 V. |
| 6 | GND | power_in | Ground/common reference pin. |
| 7 | GND | power_in | Ground/common reference pin. |
| 8 | VIN | power_in | DC supply input, operable up to 20 V at IO = 250 mA, with a typical dropout voltage of 0.4 V (0.6 V max) between VIN and VOUT at 250 mA load. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SO-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
L4931ABD50-TR - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SO-8 (KiCad packages3D, STEP)
- 3D model files:
l4931abd50-tr-etched.step/l4931abd50-tr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);l4931abd50-tr.step/l4931abd50-tr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (32 pp, sha256
42bf56a6e95ed577, retrieved 2026-09-23, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-sonnet-5(text+vision), consensusclaude-opus-4-8(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).