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LM1117RS-1.8

Public Made by Adom

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HTC Korea TAEJIN Tech Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2(DPAK). Pinout cross-checked by two models against the datasheet, 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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LM1117RS-1.8

HTC Korea TAEJIN Tech · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252-2(DPAK)

LM1117RS-1.8 from HTC Korea TAEJIN Tech, in a TO-252-2(DPAK). 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 1.8V version it serves as the ground return, and the datasheet gives no separate limit for it.
2 VOUT power_out Regulated output voltage (1.8V nominal for this variant); a 10 µF or larger output capacitor is required for stability.
3 VIN power_in Input voltage pin; absolute maximum input is 20 V and the electrical characteristics specify operating input up to 12 V.

Key specifications

Parameter Value
Manufacturer HTC Korea TAEJIN Tech
Package TO-252-2(DPAK)
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 VO 1.782 1.8 1.818 V VIN = 3.3V, IO = 10mA 6
Output Voltage VO 1.764 1.836 V VIN = 3.3V to 12V, IO = 0mA to 1A, TJ = 0 ~ 125℃ 6
Line Regulation ΔVLINE 0.1 0.2 % IO = 10mA, VIN = 3.3V to 12V 6
Load Regulation ΔVLOAD 0.2 0.4 % IO = 10mA to 1A, VIN = 3.8V 6
Operating Input Voltage VIN 12 V 6
Quiescent Current ID 5 10 mA VIN - VO = 5V 6
Supply Voltage Rejection SVR 60 75 dB IO = 1A, f = 120Hz, VIN - VO = 3V, VRIPPLE = 1VPP 6
Input Supply Voltage VIN 20 V 1
Lead Temperature TSOL 260 ℃ 1
Storage Temperature Range TSTG -65 150 ℃ 1
Operating Junction Temperature Range TOPR -40 125 ℃ 1
Dropout Voltage VD 1 1.1 V IO = 100mA 8
Dropout Voltage VD 1.1 1.2 V IO = 500mA 8
Dropout Voltage VD 1.2 1.3 V IO = 1A 8
Thermal Resistance Junction-To-Ambient / TO-252 θJA-TO-252 105 °C/W No heat sink / No air flow / No adjacent heat source / TA=25°C 12
Current Limit IO 1000 mA VIN - VO = 5V 6
Output Noise(%VO) EN 100 uV B = 10Hz to 10kHz, TJ = 25℃ 6
Temperature Stability 0.5 % 8
Long Term Stability 0.3 % 1000 hrs, TJ = 125℃ 8
Thermal Regulation 0.003 %/W TA = 25℃ 30ms Pulse 8

CAD (KiCad official)

  • Symbol: LM1117RS-1.8
  • Footprint: Package_TO_SOT_SMD:TO-252-2
  • 3D model: TO-252-2(DPAK) (KiCad packages3D, STEP)
  • 3D model files: lm1117rs-1-8-etched.step / lm1117rs-1-8-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm1117rs-1-8.step / lm1117rs-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 (13 pp, sha256 e809b301166d1a79, retrieved 2026-10-16, 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