Reverse polarity switch protects mobile devices

Reverse polarity switch protects mobile devices

The FR011L5J low-side reverse polarity protector and the FR014H5JZ high-side reverse polarity protector with integrated over-voltage transient suppression (OVS) are a line of low-power, application-specific, reverse polarity protection switches. The devices provide low resistance, fast response, and with nearly 50X less power consumption than a traditional series Schottky solution at 1 A.

The reverse polarity protection switches are optimized for the application to provide a plug and play implementation. In the event of a reverse bias condition, both devices shut off power and provide a full voltage block to help protect downstream circuits. Both protectors dissipate less than 0.02 W during 1-A normal operation, and less than 20 µW in a 16-V reverse bias event. They minimize the need for heat sinking and allow for smaller package sizes. (Ea/1,000: FR011L5J, $0.35; FR014H5JZ, $0.56 — available now.)

By Paul O’Shea

Fairchild Semiconductor , San Jose , CA , United States
Information 408-822-2000
www.fairchildsemi.com