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LM1117S-1.8

Public Made by Adom

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

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LM1117S-1.8

HTC Korea TAEJIN Tech · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223-3

LM1117S-1.8 from HTC Korea TAEJIN Tech, in a SOT-223-3. 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 ADJ/GND power_in Adjustable/ground pin; on the fixed 1.8 V LM1117S-1.8 it serves as the ground return, and the datasheet gives no separate pin current limit for it beyond the adjustment pin current of 50 µA typical and 120 µA maximum on the ADJ version.
2 VOUT power_out Regulated output at 1.8 V nominal, specified at 1.764 V to 1.836 V over 0 to 125 °C for 0 mA to 1 A load with VIN of 3.3 V to 12 V, with 1 A current limit of 1000 to 1600 mA and 10 µF output capacitor recommended for stability.
3 VIN power_in Unregulated input supply; the datasheet gives a maximum DC input voltage of 20 V, a specified operating input voltage of 12 V, and a dropout of 1.2 V typical at 1 A output current.

Key specifications

Parameter Value
Manufacturer HTC Korea TAEJIN Tech
Package SOT-223-3
Category Power Management (PMIC)
Pins 3

CAD (KiCad official)

  • Symbol: LM1117S-1.8
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223-3 (KiCad packages3D, STEP)
  • 3D model files: lm1117s-1-8-etched.step / lm1117s-1-8-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm1117s-1-8.step / lm1117s-1-8.glb are the bare package body.

Provenance

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

  • Datasheet: HTC Korea TAEJIN Tech datasheet (12 pp, sha256 44a7a7aa0771cacd, retrieved 2026-10-09, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (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