CS8141
Description
The CS8140 is a 5V Watchdog Regulator with protection circuitry and three logic control functions that allow a microprocessor to control its own power supply. The CS8140 is designed for use in automotive, switch mode power supply post regulator, and battery powered systems. Basic regulator performance characteristics include a low noise, low drift, 5V ± 4% precision output voltage with low dropout voltage (1.25V @ IOUT = 500m A) and low quiescent current (7m A @ IOUT = 500m A). On board short circuit, thermal, and overvoltage protection make it possible to use this regulator in particularly harsh operating environments. The Watchdog logic function monitors an input signal (WDI) from the microprocessor or other signal source. When the signal frequency moves outside externally programmable window limits, a RESET signal is generated ( RESET ). An external capacitor (CDELAY) programs the watchdog window frequency limits as well as the power on reset (POR) and RESET delay. The...
