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LR1117DS12X

Public Made by Adom

by adom

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

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LR1117DS12X

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

LR1117DS12X from LRC, in a SOT-223. 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 power_in Ground pin of the fixed-version regulator, the reference for the output voltage.
2 Vout power_out Regulated output; the datasheet recommends a 10uF tantalum or MLCC output capacitor for stability with ESR between 3mΩ and 22Ω.
3 Vin power_in Input supply; the recommended working input voltage is at most 15V and a 10uF input capacitor is recommended.

Key specifications

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

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 Vout 1.176 1.2 1.224 V 0≤Iout≤1A, Vin=3.2V 3
Load Regulation ΔVout 28 mV Vin =2.7V, 10mA≤Iout≤1A 3
Dropout Voltage Vdrop 1.15 1.3 V Iout=100mA 4
Dropout Voltage Vdrop 1.3 1.5 V Iout=1A 4
Quiescent Current Iq 2 5 mA Vin =10V 4
Temperature Coefficient ΔV/ΔT -100 100 ppm 4
Operating Junction Temperature Tj -20 125 °C 2
Max Input Voltage Vin 18 V 2
Max Operating Junction Temperature Tj 150 °C 2
Ambient Operating Temperature Ta -40 85 °C 2
Storage Temperature Ts -40 150 °C 2
Lead Temperature 260 °C 10S 2
Supply Voltage Rejection SVR 60 dB f = 120Hz, VIN - VOUT = 3V + 1VPP Ripple 4
Thermal Resistance Junction-to-Case TJC 20 °C/W SOT-223 4
Thermal Resistance Junction-to-Ambient TJA 136 °C/W SOT-223 (No heat sink) 4

CAD (KiCad official)

  • Symbol: LR1117DS12X
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223 (KiCad packages3D, STEP)
  • 3D model files: lr1117ds12x-etched.step / lr1117ds12x-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lr1117ds12x.step / lr1117ds12x.glb are the bare package body.

Provenance

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

  • Datasheet: LRC datasheet (9 pp, sha256 67c0164382c5206c, retrieved 2026-10-28, 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