component
MD5344-1
Public Made by Adomby adom
Shanghai Mingda Microelectronics Linear Voltage Regulators (LDO), SOT-23-3L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 3d ago |
| viewers | 3d ago |
| md5344-1-etched.glb | 3d ago |
| md5344-1-etched.step | 3d ago |
| md5344-1-hero.glb | 3d ago |
| md5344-1-hero.overlay.json | 3d ago |
| md5344-1.glb | 3d ago |
| md5344-1.kicad_mod | 3d ago |
| md5344-1.kicad_sym | 3d ago |
| md5344-1.lbr | 3d ago |
| md5344-1.step | 3d ago |
| package.json | 3d ago |
| page.json | 3d ago |
| README.md | 3d ago |
MD5344-1
Shanghai Mingda Microelectronics · Linear Voltage Regulators (LDO) · SOT-23-3L
MD5344-1 from Shanghai Mingda Microelectronics, in a SOT-23-3L. 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 | power_in | Ground pin of the MD5344-1 4.4V LDO regulator. |
| 2 | VIN | power_in | Regulator input; operating input voltage up to 10V (absolute maximum 12V). |
| 3 | VOUT | power_out | Regulated 4.4V (±2%) output, up to 500mA with about 1A current limit; needs an output capacitor of 2.2µF or more close to VOUT and VSS. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shanghai Mingda Microelectronics |
| Package | SOT-23-3L |
| Category | Power Supply Chip |
| 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 |
|---|---|---|---|---|---|---|---|
| Input voltage (absolute maximum) | VIN | 12 | V | Ta=25℃ | 2 | ||
| Power dissipation SOT-23 | PD | 250 | mW | SOT-23, Ta=25℃ | 2 | ||
| Thermal resistance SOT-23 | RθJB | 200 | ℃/W | SOT-23, JEDEC 4-layer (2s2p) PCB | 2 | ||
| Operating ambient temperature | TOPR | -40 | 85 | ℃ | 2 | ||
| Storage temperature | TSTG | -40 | 125 | ℃ | 2 | ||
| Output voltage tolerance (nominal 4.4V) | VOUT(S) | -2 | 2 | % | VIN=VOUT+1V, IOUT=50mA | 3 | |
| Output voltage nominal | VOUT | 4.4 | V | MD5344-1 catalog value | 2 | ||
| Output current | IOUT | 500 | mA | VIN=VOUT+1V | 3 | ||
| Line regulation | ΔVOUT1/ΔVIN*VOUT | 0.05 | 0.2 | %/V | VOUT+1V≤VIN≤10V, IOUT=10mA | 3 | |
| Load regulation | ΔVOUT2 | 20 | 40 | mV | VIN=VOUT+1V, 1mA≤IOUT≤100mA | 3 | |
| Output voltage temperature coefficient | ΔVOUT/ΔTa*VOUT(S) | -100 | 50 | 100 | ppm/℃ | VIN=VOUT+1V, IOUT=1mA, -40℃≤Ta≤125℃ | 3 |
| Supply current | ISS1 | 1.2 | 2.5 | uA | VIN=10V, no load | 3 | |
| Input voltage | VIN | 10 | V | 3 | |||
| Current limit | ILIM | 1 | A | VIN=VOUT+1V | 3 | ||
| Power supply rejection ratio | PSRR | 44 | dB | f=100Hz, IOUT=10mA | 3 | ||
| Power supply rejection ratio | PSRR | 23 | dB | f=1kHz, IOUT=10mA | 3 | ||
| Input capacitor | CIN | 1 | µF | 1.0 µF or more | 8 |
CAD (KiCad official)
- Symbol:
MD5344-1 - Footprint:
Package_TO_SOT_SMD:SOT-23-3 - 3D model: SOT-23-3L (KiCad packages3D, STEP)
- 3D model files:
md5344-1-etched.step/md5344-1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);md5344-1.step/md5344-1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shanghai Mingda Microelectronics datasheet (12 pp, sha256
248fdd6b5737ce18, retrieved 2026-10-23, 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), 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).