# MD7043

**Shanghai Mingda Microelectronics** · Monitors & Reset Circuits · SOT-89-3

MD7043 from Shanghai Mingda Microelectronics, in a SOT-89-3. 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 | VOUT | output | Detector output (NMOS open drain, active low, unless the C suffix selects CMOS output); output current is limited to 10mA and output voltage to VSS-0.3V to VDD+0.3V. |
| 2 | VDD | power_in | Supply input; operating voltage is 1.5V to 15V for most MD70XX parts and absolute maximum supply voltage is -0.3V to 18V. |
| 3 | GND | power_in | Ground (VSS) reference pin for the voltage detector. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Shanghai Mingda Microelectronics |
| Package | SOT-89-3 |
| Category | Power Management ICs |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `MD7043`
- Footprint: `Package_TO_SOT_SMD:SOT-89-3`
- 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files: `md7043-etched.step` / `md7043-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `md7043.step` / `md7043.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Shanghai Mingda Microelectronics datasheet](docs/md7043-datasheet.pdf) (17 pp, sha256 `a73a565d183efa3d`, retrieved 2026-11-05, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-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).

[Datasheet PDF](docs/md7043-datasheet.pdf)