NCP3065 Datasheet | onsemi

DATA SHEET .onsemi. Constant Current Step-Up/ Step-Down/Inverting Switching Regulator for HB-LEDs 1.5 A NCP3065, NCV3065 The NCP3065 is a monolithic switching regulator designed to deliver constant current for powering high brightness LEDs. The device has a very low feedback voltage of 235 m V (nominal) which is used to regulate the average current of the LED string. In addition, the NCP3065 has a wide input voltage up to 40 V to allow it to operate from 12 Vac or 12 Vdc supplies monly used for lighting applications as well as unregulated supplies such as Lead Acid batteries. The device can be configured in a controller topology with the addition of an external transistor to support higher LED currents beyond the 1.5 A rated switch current of the internal transistor. The NCP3065 switching regulator can be configured in Step- Down (Buck) and Step- Up (Boost) topologies with a minimum number of external ponents. Features - Integrated 1.5 A Switch - Input Voltage Range from 3.0 V to 40 V - Low Feedback Voltage of 235 m V - Cycle- by- Cycle Current Limit - No Control Loop pensation Required - Frequency of Operation Adjustable up to 250 k Hz - Operation with All Ceramic Output Capacitors or No Output Capacitance - Analog and Digital PWM Dimming Capability - Internal Thermal Shutdown with Hysteresis - Automotive Version Available Applications - Automotive and Marine Lighting - High Power LED Driver - Constant Current Source - Low Voltage LED Lighting (Landscape, Path, Solar, MR16 Replacement) Rs 0.15 W Vin NC SWC Ipk SWE Vin P GND Vth = 0.235 V Cin 220 m...