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LM1085T-3.3

Public Made by Adom

by 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.

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LM1085T-3.3

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

LM1085T-3.3 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 power_in Ground reference pin (labelled ADJ/GND; GND on the fixed 3.3V version, ADJ on the adjustable version), with a 3.3V output tolerance of 3.235V to 3.365V.
2 VOUT power_out Regulated 3.3V output (also connected to the tab), delivering up to 3A load current with a maximum dropout of 1.5V at 3A.
3 VIN power_in Input supply pin, with an absolute maximum of 15V and a recommended operating input of up to 10V (minimum 5V for 3.3V output).

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
输出电压 Output voltage (LM1085-3.3) Vout 3.235 3.3 3.365 V 0 ≤ IOUT ≤ IFULL LOAD, 5V≤ VIN ≤10V（PD<30W） 5
电压线性调整 Line regulation (LM1085-3.3) ΔVout 7 mV IOUT = 0mA, 5V ≤ VIN ≤ 10V 5
负载调整特性 Load regulation (LM1085-3.3) ΔVout 25 mV VIN = 5V, 0 ≤ IOUT ≤ IFULL LOAD 5
Dropout 压降 (LM1085-3.3 and 5) 1.5 V ΔVREF, ΔVOUT = 1%, IOUT = 3A 5
电流限制 Current limit ILimt 3.2 4.5 A VIN-VOUT=3V 5
静态电流 Quiescent current Icc 5 15 mA Vin-Vout<10V 5
ADJ 漏电流 ADJ pin current Iadj 50 120 uA LM1085 5
ADJ 电流变化 ADJ pin current change ΔIadj 5 uA 10mA ≤ IOUT ≤ IFULL LOAD, 1.5V ≤ VIN−VOUT ≤ 10V 5
电源电压 Input voltage (absolute maximum) VIN 15 V 4
ESD 保护能力 (人体放电) ESD 2 KV 人体放电 (human body discharge) 4
最大电流 Output current (absolute maximum) Iout 3 A 4
芯片耗散功耗 Power dissipation PD 30 W 4
最高工作结温 Maximum junction temperature TJ 150 ℃ 4
储存温度 Storage temperature TSTG -65 150 ℃ 4
引脚焊接温度 Lead soldering temperature TL 245 ℃ TO-220/TO-263 4
输入电压 Input voltage (recommended) VIN 10 V 4
工作温度范围 Operating temperature range TA -40 125 °C 4

CAD (KiCad official)

  • Symbol: LM1085T-3.3
  • Footprint: Package_TO_SOT_THT:TO-220-3_Vertical
  • 3D model: TO-220 (KiCad packages3D, STEP)
  • 3D model files: lm1085t-3-3-etched.step / lm1085t-3-3-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm1085t-3-3.step / lm1085t-3-3.glb are 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, primary claude-sonnet-5-5 (text+vision), consensus claude-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).

Datasheet PDF