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1117-1.8

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by Ray

IDCHIP Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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1117-1.8

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

1117-1.8 from IDCHIP, 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 for the fixed-output version. On the adjustable version this pin is ADJ instead (feedback tap). For the 1.8V fixed variant, tie directly to system ground.
2 VOUT power_out Regulated 1.8V output. Typical accuracy 1% at 25°C; supports up to 1A. Requires an output capacitor (>=22uF tantalum recommended, smaller acceptable for fixed version) for stability.
3 VIN power_in Unregulated input supply. Recommended 3.2V to 10V for the 1.8V variant (dropout 1.2V at 1A). Absolute maximum 12V. A 10uF input bypass capacitor is recommended.

Key specifications

Parameter Value
Manufacturer IDCHIP
Package SOT-223
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • 1117-1.8H-1.8
  • 1117-1.8H-1.8G
  • 1117-1.8R-1.8
  • 1117-1.8T-1.8
  • 1117-1.8S-1.8
  • 1117-1.8D-1.8

CAD (KiCad official)

  • Symbol: 1117-1.8
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: IDCHIP datasheet (9 pp, sha256 18010771eac8ff1e, retrieved 2026-08-17, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF