component
LM1084T-3.3
Public Made by Adomby adom
HGSEMI Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-220-3. 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
markdownLM1084T-3.3
HGSEMI · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-220-3
LM1084T-3.3 from HGSEMI, in a TO-220-3. 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, labeled 地/ADJ in the datasheet; for the fixed 3.3 V LM1084T-3.3 it serves as the ground reference, while the ADJ function applies to the adjustable version. |
| 2 | VOUT | output | Regulated output pin; for the LM1084-3.3 the output is specified at 3.3 V (3.225 V min to 3.350 V max at IOUT=10 mA, VIN=6.3 V), and a tantalum output capacitor of at least 22 μF is required for stability. |
| 3 | VIN | power_in | Unregulated input supply pin; the absolute maximum input voltage is 20 V, the recommended input voltage is 12 V, and the dropout voltage is 1.5 V at 5 A output current. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | TO-220-3 |
| 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 (IOUT=10mA, VIN=6.3V) | VOUT | 3.225 | 3.3 | 3.35 | V | IOUT=10mA, VIN=6.3V | 3 |
| Output voltage, LM1084-3.3 (10mA≤IOUT≤5A) | VOUT | 3.234 | 3.3 | 3.366 | V | 10mA≤IOUT≤5A, 4.8V≤VIN≤8V | 3 |
| Input voltage, absolute maximum | VIN | 20 | V | 3 | |||
| Lead temperature, soldering | TLEAD | 245 | ℃ | Soldering 10 s, TO-263/TO-220 | 3 | ||
| Operating junction temperature, absolute maximum | TJ | 150 | ℃ | 3 | |||
| Storage temperature | TS | -65 | 150 | V | 3 | ||
| ESD capability (minimum) | ESD | 2000 | V | 3 | |||
| Input voltage, recommended | VIN | 12 | V | 3 | |||
| Operating junction temperature, recommended | TJ | 0 | 125 | °C | 3 | ||
| Junction-to-ambient thermal resistance, TO-220-3 | θJA | 60 | ℃/W | TO-220-3 package | 4 |
CAD (KiCad official)
- Symbol:
LM1084T-3.3 - Footprint:
Package_TO_SOT_THT:TO-220-3_Vertical - 3D model: TO-220-3 (KiCad packages3D, STEP)
- 3D model files:
lm1084t-3-3-etched.step/lm1084t-3-3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm1084t-3-3.step/lm1084t-3-3.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HGSEMI datasheet (10 pp, sha256
6982d7dc69dbce8b, 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).