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MD8433
Public Made by Adomby adom
Shanghai Mingda Microelectronics Linear Voltage Regulators (LDO), TO-252-4L. 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
markdownMD8433
Shanghai Mingda Microelectronics · Linear Voltage Regulators (LDO) · TO-252-4L
MD8433 from Shanghai Mingda Microelectronics, in a TO-252-4L. 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 | VOUT | power_out | Regulated output voltage pin (3.3V ±2% for MD8433, up to 300mA output current, 1.0uF minimum output capacitor, must not exceed VIN+0.3V). |
| 2 | EN | input | Enable pin: drive high (1.5V to 40V) to enable the device and low (0V to 0.6V) to put it into low current shutdown. |
| 3 | GND | power_in | Ground pin, which is also the thermal tab electrically connected to the GND node and to be connected to the GND plane for improved thermal performance. |
| 4 | NC | unconnected | No internal connection. |
| 5 | VIN | power_in | Power input pin with an operating input voltage range of 2.2V to 40V (absolute maximum 45V) and a 1.0uF minimum input capacitor. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shanghai Mingda Microelectronics |
| Package | TO-252-4L |
| Category | Power Supply Chip |
| Pins | 5 |
CAD (KiCad official)
- Symbol:
MD8433 - Footprint:
Package_TO_SOT_SMD:TO-252-4 - 3D model: TO-252-4L (KiCad packages3D, STEP)
- 3D model files:
md8433-etched.step/md8433-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);md8433.step/md8433.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shanghai Mingda Microelectronics datasheet (15 pp, sha256
627a9d1fa1c18cbe, retrieved 2026-10-27, tier: lcsc) - 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).