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AMS1117CD-1.8

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Advanced Monolithic Systems Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Made with kicad-footprint-generator 10.0 · KiCad file format 20260206
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docs ams1117cd-1-8: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain… · Ray 26d ago
viewers ams1117cd-1-8: viewers · Ray 2mo ago
ams1117cd-1-8-etched.fit.json ams1117cd-1-8: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
ams1117cd-1-8-etched.glb ams1117cd-1-8: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain… · Ray 26d ago
ams1117cd-1-8-etched.step ams1117cd-1-8: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain… · Ray 26d ago
ams1117cd-1-8.glb Publish 0.1.0 · Ray 2mo ago
ams1117cd-1-8.kicad_mod Publish 0.1.0 · Ray 2mo ago
ams1117cd-1-8.kicad_sym Publish 0.1.0 · Ray 2mo ago
ams1117cd-1-8.lbr Publish 0.1.0 · Ray 2mo ago
ams1117cd-1-8.step Publish 0.1.0 · Ray 2mo ago
package.json Publish 0.1.0 · Ray 2mo ago
page.json ams1117cd-1-8: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain… · Ray 26d ago
README.md ams1117cd-1-8: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 1mo ago

AMS1117CD-1.8

Advanced Monolithic Systems · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252

AMS1117CD-1.8 from Advanced Monolithic Systems, in a TO-252. 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 1.8V regulator. Also used as the negative-side sense return for the internal Kelvin-connected output divider.
2 VOUT power_out Regulated 1.8V output (1.773V-1.827V typ at TJ=25°C). Requires at least 22µF solid tantalum output capacitor for stability. Rated up to 1A output current.
3 VIN power_in Unregulated supply input. Absolute maximum 15V. Requires (VIN - VOUT) ≥ ~1.1V dropout at 0.8A to maintain regulation; typical VIN for the 1.8V variant is 3.3V.
TAB VOUT power_out Metal tab, electrically connected to VOUT. Serves as the primary thermal path (θJC = 15°C/W); solder to a copper pour to lower junction-to-ambient thermal resistance.

Key specifications

Parameter Value
Manufacturer Advanced Monolithic Systems
Package TO-252
Category PMIC
Pins 4

Ordering variants

Same part, different packaging or reel option.

  • AMS1117CD-1.8
  • AMS1117-1.8
  • AMS1117CS-1.8

CAD (KiCad official)

  • Symbol: AMS1117CD-1.8
  • Footprint: Package_TO_SOT_SMD:TO-252-2
  • 3D model: TO-252 (KiCad packages3D, STEP)
  • 3D model files: ams1117cd-1-8-etched.step / ams1117cd-1-8-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ams1117cd-1-8.step / ams1117cd-1-8.glb are the bare package body.

Provenance

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

  • Datasheet: Advanced Monolithic Systems datasheet (8 pp, sha256 189a2651878a87d5, retrieved 2026-08-17, tier: lcsc)
  • 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