component
LM1085T-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
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLM1085T-ADJ
HGSEMI · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-220
LM1085T-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 | ADJ/GND | passive | Adjust pin on the LM1085-ADJ (reference 1.25V, ADJ current 50 uA typ to 120 uA max) and ground on fixed versions; keep it close to the load ground/R1 to limit line-resistance error. |
| 2 | VOUT | power_out | Regulated output (1.25V to 15V adjustable via Vout=1.25*(1+R2/R1)), up to 3A load current, current limit 3.2A min to 4.5A max; also connected to the tab. |
| 3 | VIN | power_in | Input supply, absolute maximum 15V, recommended 10V, with dropout of 1.5V max at 3A. |
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 | VREF | 1.225 | 1.25 | 1.27 | V | 10mA ≤ IOUT ≤ IFULL LOAD, 1.5V ≤ (VIN−VOUT) ≤ 10V (PD<30W) | 5 |
| Line regulation (ADJ) | ΔVout | 0.2 | % | IOUT =10mA, 1.5V≤ (VIN-VOUT) ≤ 10V | 5 | ||
| Load regulation (ADJ) | ΔVout | 0.4 | % | (VIN-VOUT) = 3V, 10mA ≤ IOUT ≤ IFULL LOAD | 5 | ||
| Dropout voltage | 1.5 | V | ΔVREF, ΔVOUT = 1%, IOUT = 3A | 5 | |||
| Current limit | ILimt | 3.2 | 4.5 | A | VIN-VOUT=3V | 5 | |
| Minimum load current | MinLoad | 5 | 15 | mA | LM1085-ADJ, VIN −VOUT = 10V | 5 | |
| Quiescent current | Icc | 5 | 15 | mA | Vin-Vout<10V | 5 | |
| ADJ pin leakage current | Iadj | 50 | 120 | uA | 5 | ||
| ADJ pin current change | ΔIadj | 5 | uA | 10mA ≤ IOUT ≤ IFULL LOAD, 1.5V ≤ VIN−VOUT ≤ 10V | 5 | ||
| Input voltage (recommended) | VIN | 10 | V | 4 | |||
| Operating temperature range | TA | -40 | 125 | °C | Design temperature range; industrial grade, not automotive (note 1) | 4 | |
| Input voltage (absolute maximum) | VIN | 15 | V | 4 | |||
| ESD protection (human body model) | ESD | 2 | kV | 人体放电 | 4 | ||
| Maximum output current | Iout | 3 | A | 4 | |||
| Power dissipation | PD | 30 | W | 4 | |||
| Maximum operating junction temperature | TJ | 150 | °C | 4 | |||
| Storage temperature | TSTG | -65 | 150 | °C | 4 | ||
| Lead soldering temperature | TL | 245 | °C | TO-220/TO-263 pin soldering | 4 |
CAD (KiCad official)
- Symbol:
LM1085T-ADJ - Footprint:
Package_TO_SOT_THT:TO-220-3_Vertical - 3D model: TO-220 (KiCad packages3D, STEP)
- 3D model files:
lm1085t-adj-etched.step/lm1085t-adj-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm1085t-adj.step/lm1085t-adj.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HGSEMI datasheet (12 pp, sha256
f85647044f09c0eb, retrieved 2026-10-19, 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-sonnet-5-5(text+vision), consensusclaude-opus-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).