component

LD1117S18CTR

Public Made by Adom

by adom

STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management (pmic)ld1117s18ctrfactory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
Name Last commit message Last updated
docs ld1117s18ctr: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain S… · Ray 25d ago
viewers ld1117s18ctr: viewers · Ray 1mo ago
ld1117s18ctr-etched.fit.json ld1117s18ctr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
ld1117s18ctr-etched.glb ld1117s18ctr: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain S… · Ray 25d ago
ld1117s18ctr-etched.step ld1117s18ctr: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain S… · Ray 25d ago
ld1117s18ctr.glb Publish 0.1.0 · Ray 1mo ago
ld1117s18ctr.kicad_mod Publish 0.1.0 · Ray 1mo ago
ld1117s18ctr.kicad_sym Publish 0.1.0 · Ray 1mo ago
ld1117s18ctr.lbr Publish 0.1.0 · Ray 1mo ago
ld1117s18ctr.step Publish 0.1.0 · Ray 1mo ago
package.json ld1117s18ctr: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain S… · Ray 25d ago
page.json ld1117s18ctr: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain S… · Ray 25d ago
README.md Initial commit: component/ld1117s18ctr · Ray 1mo ago

LD1117S18CTR

STMicroelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223

LD1117S18CTR from STMicroelectronics, in a SOT-223. 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 GND power_in Ground reference pin for the fixed 1.8 V output version (ADJ pin on the adjustable version); output voltage is set internally on-chip trim for the fixed device.
2 VOUT power_out Regulated output voltage pin, fixed at 1.8 V (LD1117#18), rated up to 800 mA output current; internally connected to the package TAB.
3 VIN power_in Unregulated DC input supply pin; operating input voltage up to 15 V (absolute maximum 15 V, or 18 V when IOUT < 20 mA).

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package SOT-223
Category Power Management (PMIC)
Pins 3

CAD (KiCad official)

  • Symbol: LD1117S18CTR
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223 (KiCad packages3D, STEP)
  • 3D model files: ld1117s18ctr-etched.step / ld1117s18ctr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ld1117s18ctr.step / ld1117s18ctr.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 2026-09-23, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.2, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-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