component
LM1117T-1.8
Public Made by Adomby 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.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLM1117T-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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm1117t-1-8.step/lm1117t-1-8.glbare 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, primaryclaude-haiku-5-5(text), consensusclaude-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).