NCV8668ABD133R2G ON Semiconductor

NCV8668 LDO Regulator - Very Low I Window Watchdog, q, Enable and Reset 150 mA The NCV8668 is 150 mA LDO regulator with integrated window NCV8668 V in V out * Driver with Current RO Limit WDI RESET GENERATOR and Thermal V WINDOW ref Shutdown WATCHDOG WM1 WM2 Enable EN GND * 5 V OPTION ONLY Figure 2. Simplified Block Diagram 114 EN RO 1 1 8 8 GND Vin EN EN RO RO GND GND GND Vin GND Vin GND GND WM 2 Vout Vout WM 2 GND GND WM 2 Vout WM 1 WDI WM 1 WDI WM 1 WDI SOIC8 SOIC8 EP SOIC14 Figure 3. Pin Connections (Top View) PIN FUNCTION DESCRIPTION Pin No. Pin No. Pin No. Pin SOIC14 SOIC8 SOIC8 EP Name Description 1 1 1 RO Reset Output. 30 k internal PullUp resistor connected to V . (Open Drain out output for 2.5 V, 2.6 V, and 3.3 V voltage options) RO goes Low when V out drops by more than 7% from nominal. 2, 3, 4, 5, 10, 2 2 GND Power Supply Ground. 11, 12 For SOIC14 connect pin 2 and 3 to GND connect pin 45 and 1012 to heatsink area with GND potential 6 3 3 WM2 Watchdog Mode Bit 2 Watchdog and Reset mode selection. Connect to V out or GND. 7 4 4 WM1 Watchdog Mode Bit 1 Watchdog and Reset mode selection. Connect to V out or GND. 8 5 5 WDI Watchdog Input Trigger Input for Watchdog pulses. When not used, connect to V or GND. out 9 6 6 V Regulated Output Voltage. Connect 2.2 F capacitor with ESR < 100 to out ground. 13 7 7 V Positive Power Supply Input. Connect 0.1 F capacitor to ground. in 14 8 8 EN Enable Input low level disables the IC. EPAD GND Exposed Pad is Connected to Ground