SparkFun MOSFET Power Switch and Buck Regulator (Low-Side)

SKU: COM-23979 Brand: Sparkfun

The MOSFET Power Switch and Buck Regulator (Low-Side) can be powered with up to 12V and control up to 10A, all while providing a sweet 3.3V...

Special Price $19.31 AUD, inc GST

Regular Price $25.40 AUD, inc GST

$17.55 AUD, exc GST

Special pricing ends 28 July 2024

* this special may end earlier than shown

Available with a lead time
Expect dispatch between May 09 and May 13

Does your microcontroller need to control a high-voltage item, like a 12V LED strip, while also needing to be powered? Do you want to avoid having multiple power adapters and microcontrollers for your project? The MOSFET Power Switch and Buck Regulator (Low-Side) is one product Sparkfun needed at SparkFun, so Sparkfun figured other folks might have the same problem. Power the board with up to 12V and control up to 10A, all while providing a sweet 3.3V to your control board.

The SparkFun MOSFET Power Switch and Buck Regulator (Low-Side) combines two circuits into one board: an LMR14203 buck regulator configured to output 3.3V and an N-channel MOSFET (PSMN7R0-100BS) configured as a low-side switch. A flyback diode is also on the load side for devices with back EMF! Simply pull the CTL pin low to activate the load.

Various connectors (barrel jack, female header, and poke-home) are provided to connect a power supply to a microcontroller of your choice (Arduino, micro-bit, Raspberry Pi’s microcontroller) and load them together. VCC, 3.3V, CTL, and GND are also broken out through 0.1" spaced PTHs for those who prefer to solder. Two LEDs (PWR_LED and ON_LED) indicate when there is 3.3V and whenever power is applied to the load. Jumpers are included on the back to disable the LEDs. A MEAS PTH jumper is also included for those interested in precisely measuring the current consumption of the system.

Note: While the MOSFET is rated to 100A/100V, Sparkfun don't recommend you go much above 10A as the PCB polygon pours and traces become the limiter.

Get Started With the SparkFun MOSFET Power Switch and Buck Regulator Guide

Features

Input Voltage Range: 4.5V to 12V
LMR14203 Step Down Voltage Regulator
- Configured to Output 3.3V/300mA
PSMN7R0-1000BS N-Channel MOSFET
- Configured as a Low-Side Switch
Connectors
- Input: 5.5mm x 2.1mm Barrel Jack (Center-Positive)
- Output: Poke-Home Connectors
- Control: 1x4 Female Headers
0.1"-spaced PTHs
Built-in Flyback Diode on Load
LEDs
- PWR
- ON
Jumpers
- PWR_LED
- MEAS
- ON_LED
Dimensions: 1.50" x 1.50" (38.1mm x 38.1mm)
Weight: 9.9g

Documents

This product is listed in:

Components & Parts>Voltage Regulators

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