NCP3066 Series

Buck / Boost / Inverting Regulator, Switching, Constant Current, 1.5 A, for HB-LEDs with Enable

Catalog

Buck / Boost / Inverting Regulator, Switching, Constant Current, 1.5 A, for HB-LEDs with Enable

Part	Type	Mounting Type	Topology	Dimming	Number of Outputs	Package / Case	Frequency	Operating Temperature [Min]	Operating Temperature [Max]	Supplier Device Package	Voltage - Supply (Max) [Max]	Internal Switch(s)	Current - Output / Channel	Applications	Voltage - Supply (Min) [Min]	Outputs and Type	Utilized IC / Part	Contents	Voltage - Input	Voltage - Output
ON Semiconductor NCP3066MNTXG	DC DC Regulator	Surface Mount	Step-Down (Buck) Step-Up (Boost)	Analog PWM	1	8-VDFN Exposed Pad	150 kHz	0 °C	85 C	8-DFN (4x4)	40 V		1.5 A	Lighting	3 V
ON Semiconductor NCP3066SCBSTGEVB													350 mA			1 Non-Isolated Output	NCP3066	Board(s)	12 VDC	16 V

Catalog

Buck / Boost / Inverting Regulator, Switching, Constant Current, 1.5 A, for HB-LEDs with Enable

Key Features

• Integrated 1.5 A Switch

• Input Voltage Range from 3 V to 40 V

• Low Feedback Voltage of 235 mV

• Cycle-by-Cycle Current Limit

• No Control Loop Compensation Required

• Frequency of Operation Adjustable up to 250 kHz

• Operation With All Ceramic Output Capacitors or No Output Capacitance

• Internal Thermal Shutdown with Hysteresis

• ON/OFF pin for direct PWM dimming

• ON/OFF pin disabling the regulator

Description

The NCP3066 is a monolithic Buck Boost Inverting Switching Regulator designed to deliver constant current for powering high brightness LEDs. The device has a very low feedback voltage of 235 mV (nominal) which is used to regulate the average current of the LED string. In addition, the NCP3066 has a wide input voltage up to 40 V to allow it to operate from 12 Vac or 12 Vdc supply, commonly used for lighting applications as well as unregulated supplies such as rechargeable batteries. The NCP3066 switching regulator can be configured in Step-Down (Buck) and Step-Up (Boost) and Voltage-Inverting topologies with a minimum number of external components. An NCV3066 automotive version is available and without the ON/OFF feature as the NCP3065.