Big MOSFET Slide Switch with Reverse Voltage Protection, MP

Description

This breadboard-compatible module is an alternative to bulky power switches. It uses a small integrated slide switch to control a high-side power MOSFET that can deliver continuous currents up to around 8 A at 4.5 V to 40 V. The board features reverse-voltage protection and also makes it easy to control the MOSFET with an external switch or the digital output of a microcontroller.

This product is a power switch implemented as a pair of P-channel MOSFETs configured as a high-side switch with reverse voltage protection and controlled by a micro slide switch. Because the main current does not go through the controlling mechanical switch, a variety of switches can be used without concern for the current they can carry. For example, a small slide or toggle switch can be mounted conveniently on a control panel with thin wires running to it, while the main power path can be shorter and with thicker wires. Pushbutton or tactile switches can also be used for momentary switching applications.

Unlike the Pololu Pushbutton Power Switches, which can lose their state when power is disconnected and reapplied, the conducting state of the MOSFET Slide Switches is determined only by the physical control switch (or a signal supplied to the “ON” pin), independent of power applied to the board. This can make them more appropriate for applications where the supplied power may be intermittent.

Features

• Size: 0.8″ × 0.9″ × 0.16″ without included optional connectors.
  This also does not include the slide switch lever, which extends past the edge of the board by approximately 0.04″ (1 mm).
• Weight: 2.6 g (without included optional connectors)
• Current rating: 8 A (continuous at 12 V, without exceeding 150°C)
• Minimum operating voltage: 4.5 V
• Maximum operating voltage: 40 V (recommended maximum is 32 V)
• Reverse voltage protection?: Y ES
• PCB dev codes: psw04b
• Other PCB markings: 0J9260