NCV8141D2TR4G ON Semiconductor

NCV8141 Linear Regulator - ENABLE, RESET, Watchdog 5.0 V, 500 mA The NCV8141 is a linear regulator suited for microprocessor NCV8141 V IN Overvoltage Overtemperature Reference & Bias Regulation ENABLE Control Logic ENABLE V OUT RESET WDI Delay Short Circuit Undervoltage Sense GND Watchdog RESET Delay Figure 1. Block Diagram PIN FUNCTION DESCRIPTION Pin Symbol Function 1 V Supply voltage to IC, usually direct from the battery. IN 2 ENABLE CMOS compatible logical input. V is disabled when ENABLE is LOW and WDI is invalid. OUT 3 RESET CMOS compatible output lead. RESET goes low whenever V drops 4.5% below its typical value for OUT more than 2.0 s or WDI signal falls below the watchdog threshold frequency. 4 GND Ground Connection. 5 Delay Timing capacitor for Watchdog and RESET functions. 6 WDI CMOS compatible input lead. The Watchdog function monitors the falling edge of the incoming digital pulse train. The signal is usually generated by the system microprocessor. 7 V Regulated output voltage, 5.0 V (typ). OUT