component
LM1085T-3.3
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.
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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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm1085t-3-3.step/lm1085t-3-3.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).
# 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](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8758752923138973696) (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](docs/lm1085t-3-3-datasheet.pdf)