component
LM2940T-5.0
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
markdownLM2940T-5.0
HGSEMI · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-220
LM2940T-5.0 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 | IN | power_in | Unregulated input supply, operating range 6 to 26 V (absolute maximum 45 V), with a 1 A output requiring about 0.5 V typical dropout. |
| 2 | GND | power_in | Ground reference pin; the metal tab of the TO-220-3 package is also GND, per the datasheet figure note. |
| 3 | OUT | power_out | Regulated LDO output, supplying up to 1 A (load range 5 mA to 1 A) with 0.5 V typical and 1.0 V maximum dropout at 1 A. |
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 |
|---|---|---|---|---|---|---|---|
| Output voltage (LM2940-5) | VOUT | 4.85 | 5 | 5.15 | V | LM2940-5, 5 mA≤Io≤1A | 4 |
| Quiescent current | Icc | 10 | 20 | mA | VO+2V≤VIN≤26V, Io=5mA | 4 | |
| Quiescent current | Icc | 50 | 80 | mA | VIN=VO+5V, Io=1A | 4 | |
| Line regulation | VRLINE | 5 | 50 | mV | VO+2V≤VIN≤26V, Io=5mA | 4 | |
| Load regulation | VRLOAD | 25 | 50 | mV | 50 mA≤IO≤1A | 4 | |
| Dropout voltage | VDrop | 0.5 | 1 | V | Io =1A | 4 | |
| Dropout voltage | VDrop | 130 | 200 | mV | Io=100mA | 4 | |
| Short-circuit current | Ishort | 1.5 | 1.9 | A | VinMax=26V | 4 | |
| Maximum operating voltage | VinMax | 26 | 31 | V | 4 | ||
| Input voltage (recommended operating range) | VIN | 6 | 26 | V | 3 | ||
| Operating junction temperature (recommended) | TJ | 0 | 125 | °C | 3 | ||
| Input supply voltage (absolute maximum) | VIN | 45 | V | 3 | |||
| Lead temperature (soldering 10 s) | TLEAD | 245 | °C | TO-220/TO-263 | 3 | ||
| Operating junction temperature (absolute maximum) | TJ | 150 | °C | 3 | |||
| Storage temperature range | Tstg | -65 | 150 | °C | 3 | ||
| ESD human body model | ESD | 2000 | V | Human body model | 3 | ||
| ESD machine model | ESD | 300 | V | Machine model | 3 | ||
| RMS noise | Noise | 0.003 | % | 10Hz-100KHz, Io=5mA | 4 |
CAD (KiCad official)
- Symbol:
LM2940T-5.0 - Footprint:
Package_TO_SOT_THT:TO-220-3_Vertical - 3D model: TO-220 (KiCad packages3D, STEP)
- 3D model files:
lm2940t-5-0-etched.step/lm2940t-5-0-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2940t-5-0.step/lm2940t-5-0.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HGSEMI datasheet (10 pp, sha256
0d8a7e85d1ab1ecb, retrieved 2026-11-06, 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).