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LM1117T-1.8

Public Made by Adom

by adom

HGSEMI Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-220-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LM1117T-1.8

HGSEMI · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-220-3

LM1117T-1.8 from HGSEMI, in a TO-220-3. 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 pin for the fixed-voltage LM1117T-1.8 (the datasheet labels it GND/ADJ, with the ADJ function applying to the adjustable version); the datasheet gives no electrical limit for this pin.
2 VOUT power_out Regulated output voltage pin; the datasheet's TAB is also internally connected to VOUT, and the output must use at least a 22 µF tantalum capacitor for the adjustable version, with smaller capacitors allowed for fixed versions.
3 VIN power_in Input voltage pin; the datasheet gives a recommended input voltage of 15 V and an absolute maximum of 20 V.

Key specifications

Parameter Value
Manufacturer HGSEMI
Package TO-220-3
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 (TJ=25℃ column) VOUT 1.782 1.8 1.818 V IOUT=10mA, VIN=3.8V, TJ=25℃, 0≤IOUT≤1A, 3.2V≤VIN≤10V 4
Output voltage (full junction temperature column) VOUT 1.764 1.8 1.836 V IOUT=10mA, VIN=3.8V, 0≤IOUT≤1A, 3.2V≤VIN≤10V 4
Line regulation Rline 3 7 mV VINMIN≤VIN≤12V, VOUT=Fixed/Adj, IOUT=10mA 4
Load regulation Rload 6 12 mV 10mA≤IOUT≤1A, VOUT=Fixed/Adj 4
Quiescent current Iq 5 10 mA 4.25V≤VIN≤6.5V 4
Ripple rejection PSRR 60 75 dB fRIPPLE=120Hz, (VIN-VOUT)=3V, VRIPPLE=1VPP 4
Adjust pin current Iadj 60 120 µA 4
Adjust pin current change Iadj 0.2 5 µA 0≤IOUT≤1A, 1.4V≤VIN-VOUT≤10V 4
Current limit Ilimit 1.2 1.4 1.5 A 4
Thermal shutdown temperature TSD 150 ℃ 4
Output voltage temperature stability TSOUT 0.3 % 4
Temperature stability 0.5 % 4
Long-term stability 0.3 % Tamb=125°C, 1000Hrs 4
RMS output noise (% of VOUT) 0.003 % 10Hz≤f≤10kHz 4
Input voltage (absolute maximum) VIN 20 V 3
Lead temperature (soldering 10 s), TO-263/TO-220 TLEAD 245 °C Soldering 10 s, TO-263/TO-220 3
Operating junction temperature (absolute maximum) TJ 150 °C 3
Storage temperature TSTG -65 150 °C 3
ESD capability (minimum) ESD 2000 V 3
Input voltage (recommended) VIN 15 V 4
Operating junction temperature range (recommended) TJ -40 125 °C 4
Junction-to-ambient thermal resistance, TO-220-3 θJA 60 ℃/W 無散熱片 (no heatsink) 4

CAD (KiCad official)

  • Symbol: LM1117T-1.8
  • Footprint: Package_TO_SOT_THT:TO-220-3_Vertical
  • 3D model: TO-220-3 (KiCad packages3D, STEP)
  • 3D model files: lm1117t-1-8-etched.step / lm1117t-1-8-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm1117t-1-8.step / lm1117t-1-8.glb are the bare package body.

Provenance

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

  • Datasheet: HGSEMI datasheet (12 pp, sha256 2486968a9dcfb2fd, retrieved 2026-10-17, 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: 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