U6813B Fail-safe IC With High-side And Relay Driver

Fail-safe IC, Watchdog Timer Relay Driver Lamp Driver and Charge Pump The function of Microcontrollers in safety-critical applications (e.g., anti-lock systems) needs to be monitored permanently. Usually, this task is accomplished by an indepen- dent watchdog Timer The monolithic IC U6813B designed in bipolar technology and qualified according to the needs of the automotive industry, includes such a watchdog Timer and provides additional features for added value. With the help of integrated driver stages, it is easy to control safety-related functions of a relay and of an N-chan- nel Power MOSFET in high-side applications. In case of a Microcontroller malfunction or supply-voltage anomalies, the U6813B provides positive and negative reset and enable output signals. This flexibility guarantees a broad range of applications. The U6813B is based on of Atmels fail-safe ICs U6808B and U6809B By ATMEL Corporation