# LM1084IT-3.3G

**HANSCHIP semiconductor** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-220-3L

LM1084IT-3.3G from HANSCHIP semiconductor, in a TO-220-3L. 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); for the fixed LM1084-3.3 variant it is the ground reference, and the datasheet's recommended operating junction range is 0 to +125 °C. |
| 2 | VOUT | power_out | Regulated output pin giving 3.3 V nominal, with an output of 3.234 V to 3.366 V over 10 mA to 5 A load and 4.8 V to 8 V input (LM1084-3.3 test conditions); the datasheet requires at least 22 µF tantalum output capacitance for stability. |
| 3 | VIN | power_in | Input supply pin with a recommended input voltage of 12 V and an absolute maximum input voltage of 20 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HANSCHIP semiconductor |
| Package | TO-220-3L |
| 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 (LM1084-3.3) | VOUT | 3.225 | 3.3 | 3.35 | V | IOUT=10mA, VIN=6.3V | 3 |
| Output voltage (LM1084-3.3) | VOUT | 3.234 | 3.3 | 3.366 | V | 10mA≤IOUT≤5A, 4.8V≤VIN≤8V | 3 |
| Line regulation (LM1084-3.3) | ΔVOUT |  | 0.5 | 6 | mV | IOUT=10mA, 4.8V≤VIN≤10V | 3 |
| Load regulation (LM1084-3.3) | ΔVOUT |  | 3 | 20 | mV | 0mA≤IOUT≤5A, VIN-VOUT=3V | 4 |
| Dropout voltage | VDROP |  | 1.45 | 1.5 | V | IOUT=5A, ΔVREF, ΔVOUT=1% | 4 |
| Current limit | ILIMIT | 5.5 | 6.5 |  | A | VIN-VOUT=3V | 4 |
| Quiescent current | IQ |  | 5 | 10 | mA | VIN=10V (LM1084) | 4 |
| Ripple rejection | PSRR | 60 | 72 |  | dB | fRIPPLE=120Hz, COUT=25µF tantalum, IOUT=5A, VIN-VOUT=3V | 4 |
| Input voltage (absolute maximum) | VIN |  |  | 20 | V |  | 3 |
| Lead temperature (soldering) | TLEAD |  |  | 245 | ℃ | Soldering, 10 s | 3 |
| Operating junction temperature (absolute maximum) | TJ |  |  | 150 | ℃ |  | 3 |
| Storage temperature | TS | -65 |  | 150 | V |  | 3 |
| ESD capability | ESD | 2000 |  |  | V | Minimum ESD capability | 3 |
| Operating junction temperature range (recommended) | TJ | 0 |  | 125 | °C |  | 3 |
| Input voltage (recommended) | VIN |  | 12 |  | V |  | 3 |
| Junction-to-ambient thermal resistance (TO-220-3L) | θJA |  | 60 |  | ℃/W | TO-220-3L | 4 |

## CAD (KiCad official)

- Symbol: `LM1084IT-3.3G`
- Footprint: `Package_TO_SOT_THT:TO-220-3_Vertical`
- 3D model: TO-220-3L (KiCad packages3D, STEP)
- 3D model files: `lm1084it-3-3g-etched.step` / `lm1084it-3-3g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm1084it-3-3g.step` / `lm1084it-3-3g.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [HANSCHIP semiconductor datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757726664506269696) (11 pp, sha256 `eea5ae8cca4fced7`, 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-haiku-5-5` (text), consensus `claude-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).

[Datasheet PDF](docs/lm1084it-3-3g-datasheet.pdf)