component
L4931CDT50-TR
Public Made by Adomby adom
STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, DPAK. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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L4931CDT50-TR
STMicroelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · DPAK
L4931CDT50-TR from STMicroelectronics, in a DPAK. 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 | INPUT | power_in | Regulator input voltage pin; operating input voltage up to 20 V (absolute maximum 20 V), with a 0.1 µF input capacitor used in the test circuit. |
| 2 | GND | power_in | Ground pin, shown in the DPAK drawing as the middle stub connected to the tab (GND). |
| 3 | OUTPUT | power_out | Regulated 5 V output (L4931CDT50-TR) delivering up to 250 mA, requiring a 2.2 µF to 10 µF output capacitor with ESR of 0.1 to 10 Ω for stability. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | DPAK |
| Category | Power Management (PMIC) |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
L4931CDT50-TR - Footprint:
Package_TO_SOT_SMD:TO-252-2 - 3D model: DPAK (KiCad packages3D, STEP)
- 3D model files:
l4931cdt50-tr-etched.step/l4931cdt50-tr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);l4931cdt50-tr.step/l4931cdt50-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 2026-10-07, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).
# L4931CDT50-TR
**STMicroelectronics** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · DPAK
L4931CDT50-TR from STMicroelectronics, in a DPAK. 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 | INPUT | power_in | Regulator input voltage pin; operating input voltage up to 20 V (absolute maximum 20 V), with a 0.1 µF input capacitor used in the test circuit. |
| 2 | GND | power_in | Ground pin, shown in the DPAK drawing as the middle stub connected to the tab (GND). |
| 3 | OUTPUT | power_out | Regulated 5 V output (L4931CDT50-TR) delivering up to 250 mA, requiring a 2.2 µF to 10 µF output capacitor with ESR of 0.1 to 10 Ω for stability. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | DPAK |
| Category | Power Management (PMIC) |
| Pins | 3 |
## CAD (KiCad official)
- Symbol: `L4931CDT50-TR`
- Footprint: `Package_TO_SOT_SMD:TO-252-2`
- 3D model: DPAK (KiCad packages3D, STEP)
- 3D model files: `l4931cdt50-tr-etched.step` / `l4931cdt50-tr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `l4931cdt50-tr.step` / `l4931cdt50-tr.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590454688664481792) (32 pp, sha256 `42bf56a6e95ed577`, retrieved 2026-10-07, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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).
[Datasheet PDF](docs/l4931cdt50-tr-datasheet.pdf)