component

L4931CD33-TR

Public Made by Adom

by 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.

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L4931CD33-TR

STMicroelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SO-8

L4931CD33-TR from STMicroelectronics, in a SO-8. 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 3.3 V output, up to 250 mA, requiring a 2.2 µF to 10 µF output capacitor with ESR 0.1 to 10 Ω for stability.
2 GND power_in Ground pin.
3 GND power_in Ground pin.
4 NC unconnected No internal connection.
5 INHIBIT input TTL-compatible shutdown control input; logic low max 0.8 V enables the regulator, logic high min 2 V puts it in OFF mode.
6 GND power_in Ground pin.
7 GND power_in Ground pin.
8 VIN power_in Unregulated input voltage, operating up to 20 V (absolute maximum 20 V).

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package SO-8
Category Power Management (PMIC)
Pins 8

CAD (KiCad official)

  • Symbol: L4931CD33-TR
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SO-8 (KiCad packages3D, STEP)
  • 3D model files: l4931cd33-tr-etched.step / l4931cd33-tr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); l4931cd33-tr.step / l4931cd33-tr.glb are 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, 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