component
LM1117T-ADJ
Public Made by Adomby adom
HGSEMI Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-220. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdownLM1117T-ADJ
HGSEMI · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-220
LM1117T-ADJ from HGSEMI, in a TO-220. 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/adjust pin (地/ADJ) that sets the adjustable output voltage; the datasheet gives the adjust pin current as 60 µA typical and 120 µA maximum. |
| 2 | VOUT | power_out | Regulated output voltage pin (输出电压); the datasheet specifies a minimum 22 µF tantalum output capacitor for the adjustable version to ensure stability. |
| 3 | VIN | power_in | Input supply pin (输入工作电压) for the regulator, with a 1.4 V minimum input-to-output headroom for the adjustable version and a 20 V absolute maximum input voltage. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | TO-220 |
| 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 |
|---|---|---|---|---|---|---|---|
| Reference voltage (25°C) | VREF | 1.238 | 1.25 | 1.262 | V | LM1117-ADJ, IOUT=10mA, VIN-VOUT=2V, TJ=25℃ | 4 |
| Reference voltage (over temperature) | VREF | 1.225 | 1.25 | 1.27 | V | LM1117-ADJ, 10mA≤IOUT≤1A, 1.4V≤VIN-VOUT≤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 | |
| Dropout voltage (IOUT=100mA) | Vdrop | 1 | 1.2 | V | IOUT=100mA | 4 | |
| Dropout voltage (IOUT=500mA) | Vdrop | 1.05 | 1.25 | V | IOUT=500mA | 4 | |
| Dropout voltage (IOUT=1A) | Vdrop | 1.1 | 1.3 | V | IOUT=1A | 4 | |
| Quiescent current | Iq | 5 | 10 | mA | 4.25V≤VIN≤ 6.5V | 4 | |
| Ripple rejection ratio | PSRR | 60 | 75 | dB | fRIPPLE=120Hz, (VIN-VOUT)=3V, VRIPPLE=1VPP | 4 | |
| Adjust pin current | Iadj | 60 | 120 | µA | 4 | ||
| Adjust pin current change | 0.2 | 5 | µA | 0≤IOUT≤1A, 1.4V ≤VIN-VOUT≤10V | 4 | ||
| Current limit | Ilimit | 1.2 | 1.4 | 1.5 | A | 4 | |
| Recommended input voltage | VIN | 15 | V | 4 | |||
| Recommended operating junction temperature | TJ | -40 | 125 | °C | 4 | ||
| Input voltage (absolute maximum) | VIN | 20 | V | 3 | |||
| Lead temperature (soldering 10 s) | TLEAD | 245 | °C | TO-263/TO-220, soldering 10 s | 3 | ||
| Operating junction temperature range (absolute maximum) | TJ | 150 | °C | 3 | |||
| Storage temperature | TSTG | -65 | 150 | °C | 3 | ||
| ESD capability | ESD | 2000 | V | minimum value as printed | 3 | ||
| Thermal resistance, junction to ambient (no heatsink) | θJA | 60 | ℃/W | TO-220-3, no heatsink | 4 |
CAD (KiCad official)
- Symbol:
LM1117T-ADJ - Footprint:
Package_TO_SOT_THT:TO-220-3_Vertical - 3D model: TO-220 (KiCad packages3D, STEP)
- 3D model files:
lm1117t-adj-etched.step/lm1117t-adj-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm1117t-adj.step/lm1117t-adj.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HGSEMI datasheet (12 pp, sha256
2486968a9dcfb2fd, retrieved 2026-10-18, 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).