NCV85081BDS50R4G ON Semiconductor

NCV8508B 5.0 V and 3.3 V, 250 mA LDO with Watchdog and RESET The NCV8508B is a precision micropower Low Dropout (LDO) voltage regulator. The part contains many of the required features for NCV8508B PIN CONNECTIONS Tab = GND 1 Lead 1. V OUT 8 Delay RESET 2. V IN 3. WDI GND Wakeup 4. GND Sense WDI 5. Wakeup 6. RESET V V OUT IN 7. Delay 1 2 D PAK 7 SO8 EP PACKAGE PIN DESCRIPTION PACKAGE PIN 2 D PAK 7 SO8 EP PIN SYMBOL FUNCTION 1 4 V Regulated output voltage 3.0%. OUT 2 5 V Supply Voltage to the IC. IN 3 6 WDI CMOS compatible input lead. The Watchdog function monitors the falling edge of the incoming signal. 4 2 GND Ground connection. 5 7 Wakeup CMOS compatible output consisting of a continuously generated signal used to wake up the microprocessor from sleep mode. 6 8 RESET CMOS compatible output lead RESET goes low whenever V drops by OUT more than 7.0% from nominal, or during the absence of a correct Watchdog signal. 7 1 Delay Buffered bandgap voltage used to create timing current for RESET and Wakeup from R Delay. NC No Connection. 3 Sense Kelvin connection which allows remote sensing of the output voltage for improved regulation. Connect to V if remote sensing is not required. OUT EPAD EPAD Connect to Ground potential or leave unconnected.