component
L4931CDT33-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.
3D Model
Open in new tab ↗
Loads on click. Unloads only if this page sits in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads on click. Unloads only if this page sits in the background.
PCB Footprint
Open full view ↗Loads on click. Unloads only if this page sits in the background.
Datasheet
Open in new tab ↗Loads on click. Unloads only if this page sits in the background.
README
markdownL4931CDT33-TR
STMicroelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · DPAK
L4931CDT33-TR from STMicroelectronics, in a DPAK. 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 | power_out | Regulated output voltage pin (3.3 V nominal for the -33 output option); connect the 2.2 µF output stability capacitor here. |
| 2 | GND | power_in | Ground reference pin, internally tied to the package tab (heatsink), as shown in the DPAK pin-connection diagram. |
| 3 | VIN | power_in | Unregulated DC input supply pin, operating up to 20 V with output current up to 250 mA; requires a 0.1 µF input decoupling capacitor. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | DPAK |
| Category | Power Management (PMIC) |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
L4931CDT33-TR - Footprint:
Package_TO_SOT_SMD:TO-252-2 - 3D model: DPAK (KiCad packages3D, STEP)
- 3D model files:
l4931cdt33-tr-etched.step/l4931cdt33-tr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);l4931cdt33-tr.step/l4931cdt33-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).