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Contents

README

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LD1117V50C

STMicroelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-220

LD1117V50C from STMicroelectronics, in a TO-220. 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 GND power_in Ground reference pin (labelled ADJ/GND in the pin drawing; ground on the fixed 5.0 V version, adjustment pin on the adjustable version).
2 VOUT power_out Regulated 5 V output (4.9 to 5.1 V over 0 to 800 mA) with a minimum 10 µF output capacitor for stability; the TAB is also connected to VOUT.
3 VIN power_in Input supply pin; operating input voltage is 15 V maximum (absolute maximum 15 V, or 18 V when IOUT is below 20 mA).

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package TO-220
Category Power Management (PMIC)
Pins 3

CAD (KiCad official)

  • Symbol: LD1117V50C
  • Footprint: Package_TO_SOT_THT:TO-220-3_Vertical
  • 3D model: TO-220 (KiCad packages3D, STEP)
  • 3D model files: ld1117v50c-etched.step / ld1117v50c-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ld1117v50c.step / ld1117v50c.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: STMicroelectronics datasheet (46 pp, sha256 eb9bdaeee6a99a12, retrieved 2026-10-06, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-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