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LD1117AG-15-AA3-A-R

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UTC(Unisonic Tech) Linear Voltage Regulators (LDO), SOT-223-4. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management icsld1117ag-15-aa3-a-rfactory-2.0.0extractor-text

Verified LD1117AG-15-AA3-A-R

by Ray · last 30 Oct 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

30 Oct 2026RayPublished by the parts factory: tier mfr, 4 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: LD1117AG-15-AA3-A-R · SOT-223-4 · 4 pins
  • ✓copper: 4 copper pads, none touching another net
  • ✓datasheet: all 4 pin names found in the 15-page datasheet
  • •distributor (warn): no ['digikey', 'mouser'] number
  • ✓family: SOT-223
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-djz3a2z8/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 4 pins = 4 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 4 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ ld1117ag-15-aa3-a-r.kicad_sym✓ ld1117ag-15-aa3-a-r.kicad_mod✓ ld1117ag-15-aa3-a-r.step
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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 8d ago
viewers ld1117ag-15-aa3-a-r: viewers · Ray 8d ago
ld1117ag-15-aa3-a-r-etched.glb Publish 0.1.0 · Ray 8d ago
ld1117ag-15-aa3-a-r-etched.step ld1117ag-15-aa3-a-r: factory component page (tier=mfr) · Ray 8d ago
ld1117ag-15-aa3-a-r-hero.glb ld1117ag-15-aa3-a-r: hero GLB from the etched model (keeps the MPN mark) · Ray 8d ago
ld1117ag-15-aa3-a-r-hero.overlay.json Publish 0.1.0 · Ray 8d ago
ld1117ag-15-aa3-a-r.glb Publish 0.1.0 · Ray 8d ago
ld1117ag-15-aa3-a-r.kicad_mod Publish 0.1.0 · Ray 8d ago
ld1117ag-15-aa3-a-r.kicad_sym Publish 0.1.0 · Ray 8d ago
ld1117ag-15-aa3-a-r.lbr Publish 0.1.0 · Ray 8d ago
ld1117ag-15-aa3-a-r.step Publish 0.1.0 · Ray 8d ago
package.json Publish 0.1.0 · Ray 8d ago
page.json Set visibility: public · Ray 8d ago
README.md Publish 0.1.0 · Ray 8d ago
verification.json Verified: Published by the parts factory: tier mfr, 4 pins · Ray 8d ago

LD1117AG-15-AA3-A-R

UTC(Unisonic Tech) · Linear Voltage Regulators (LDO) · SOT-223-4

LD1117AG-15-AA3-A-R from UTC(Unisonic Tech), in a SOT-223-4. 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/ADJ power_in Ground reference (GND/ADJ pin; ground on the fixed 1.5V version) for pin code A (G-O-I).
2 VOUT power_out Regulated output voltage (1.5V fixed, output current up to 1.0A for the 1117A) for pin code A.
3 VIN power_in Input supply voltage, recommended 15V maximum and 18V absolute maximum.
4 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer UTC(Unisonic Tech)
Package SOT-223-4
Category Power Management ICs
Pins 4

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Output Voltage (VIN=3.5V, IOUT=10mA, TJ=25°C) VOUT 1.47 1.5 1.53 V VIN=3.5V, IOUT=10mA, TJ=25°C 5
Output Voltage (line/load range) VOUT 1.47 1.5 1.53 V VIN=3 to 8V, LD1117A: IOUT=0~1000mA 5
Line Regulation VOUT 1 6 mV VIN=3 to 8V, IOUT=0mA 5
Load Regulation VOUT 1 10 mV VIN=3V, LD1117A: IOUT=0~1000mA 5
Temperature stability VOUT 0.5 % 5
Long Term Stability VOUT 0.3 % 1000 hrs, TJ=125°C 5
Operating Input Voltage VIN 15 V IOUT=100mA 5
Quiescent Current IQ 5 10 mA VIN10V 5
Current Limit (LD1117A) ILIMIT 1000 mA VIN=6.5V, TJ=25°C, LD1117A 5
Output Noise Voltage eN 100 V B=10Hz to 10KHz, TJ=25°C 5
Supply Voltage Rejection SVR 60 75 dB IOUT=40mA, f=120Hz, TJ=25°C, VIN=4.5V, VRIPPLE=1VPP 5
Dropout Voltage VD 1 1.1 V IOUT=100mA 5
Dropout Voltage VD 1.15 1.25 V IOUT=500mA 5
Dropout Voltage VD 1.2 1.3 V IOUT=800mA 5
Thermal Regulation 0.01 0.1 %/W TA=25°C, 30ms Pulse 5
DC Input Voltage (absolute maximum) VIN 18 V 4
Junction Temperature (absolute maximum) TJ 150 °C 4
Operating Temperature TOPR -20 125 °C Note 2: determined from design only, not 100% tested 4
Storage Temperature TSTG -65 150 °C 4
Input Voltage (recommended) VIN 15 V 4
Operating Junction Temperature (recommended) TJ -20 125 °C 4
Junction to Ambient, SOT-223 θJA 165 °C/W 4
Junction to Case, SOT-223 θJC 15 C/W 4

CAD (KiCad official)

  • Symbol: LD1117AG-15-AA3-A-R
  • Footprint: Package_TO_SOT_SMD:SOT-223
  • 3D model: SOT-223-4 (KiCad packages3D, STEP)
  • 3D model files: ld1117ag-15-aa3-a-r-etched.step / ld1117ag-15-aa3-a-r-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ld1117ag-15-aa3-a-r.step / ld1117ag-15-aa3-a-r.glb are the bare package body.

Provenance

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

  • Datasheet: UTC(Unisonic Tech) datasheet (15 pp, sha256 f7f26a117cb07dc2, retrieved 2026-10-30, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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