onsemi | NCV3066DR2G

The NCP3066 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 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 a 12 Vac or a 12−36 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), Step−Up (Boost) and Voltage−Inverting topologies with a minimum number of external components. The ON/OFF pin provides PWM dimming capability or a low power shutdown mode.

Key Features:

• Integrated 1.5 A Switch
• Input Voltage Range from 3.0 V to 40 V
• Logic Level Shutdown Capability
• Low Feedback Voltage of 235 mV
• Cycle−by−Cycle Current Limit
• No Control Loop Compensation Required
• Frequency of Operation Adjustable up to 250 kHz
• Analog and Digital PWM Dimming Capability
• Internal Thermal Shutdown with Hysteresis
• NCV Prefix for Automotive and Other Applications Requiring Site and Control Changes
• These are Pb−Free Devices

Benefits:

• Integrated switch provides for small footprint
• Flexibility to operate from 12Vac or 12Vdc supplies commonly used for lighting applications
• Allows the use of small / low cost sense resistor
• Enhanced protection features
• Easy design-in
• Optimization of efficiency and size
• Reduce size and cost by eliminating output capacitor
• Enhanced protection features
• Provides dimming up to 1kHz frequency
• Low power standby (<100µA)

Applications:

• Automotive and Marine Lighting
• Constant Current Source, High Brightness LED Driver
• Low Voltage and Landscape Lighting