LR7843 MOSFET Driver Module Board
- Product Code:
- 2018-2-871
- Availability:
- 20
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LR7843 MOSFET Driver Module Board
The LR7843 MOSFET driver board is a power module designed to safely and efficiently switch high-current DC loads. Optocoupler isolation provides electrical separation between the microcontroller and the load, enhancing system safety.
The LR7843 MOSFET used on the board, with a 30V VDS and a maximum output current of 160A, can be used to control LED strips, 12-24V DC motors, heating resistors, pumps, and other high-current DC loads. For high-current applications, using a heatsink is recommended to ensure the MOSFET operates safely.
Technical Specifications
| Feature | Value |
|---|---|
| MOSFET on Board | LR7843 |
| Trigger Signal | 3.3V–5V |
| Power | 70W (Maximum 140W) |
| Output Voltage | 0–30V DC |
| Output Current | 110A (Maximum 160A) |
| RDS(on) | 3.3mΩ |
| VDS | 30V |
| PWM Support | Yes |
| Isolation | Optocoupler isolated |
| Compatible Load Type | DC loads only |
| Dimensions | 33 x 16 mm |
| Weight | 5 g |
Compatibility and Usage
The module can be triggered by 3.3V–5V level signals and is compatible with Arduino, ESP8266, ESP32, Raspberry Pi, and other MCU boards. With PWM support, it can be used for motor speed control, LED brightness adjustment, and power regulation applications. The module is not suitable for AC voltage control and should only be used with DC loads.
The board features solderable terminal blocks; alternatively, connections can be made by soldering wires directly. The connection pins are as follows:
- IN: PWM or digital control signal input
- V+ (Supply): DC power supply positive terminal
- LOAD: Switched device/load connection terminal
- GND: Common ground
With its low RDS(on) value and wide range of applications, it is a suitable solution for robotics projects, automation systems, power control applications, and hobby electronics projects.
