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NCP3065DR2G

NCP3065DR2G

On Semiconductor
A widely used LED driver controller available in multiple package options; useful if a boost or flexible topology is needed for different LED string arrangements.
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Overview

The NCP3065DR2G is a monolithic switching regulator designed specifically to deliver constant current for powering high-power LEDs. It features a wide input voltage range from 3V to 40V and a high-frequency 150kHz internal oscillator, allowing for the use of small surface-mount inductors and capacitors.

Why Choose This Part

This controller is highly versatile, supporting buck, boost, and buck-boost (inverting) topologies without requiring external control loop compensation. It supports both analog and PWM dimming and includes internal thermal shutdown with hysteresis for improved system reliability.

Applications

Automotive Lighting
Ideal for rugged vehicle environments requiring constant current for LED headlamps or interior lighting due to its 40V tolerance.
MR16 LED Replacement
Suited for low-voltage AC/DC lighting applications where a compact footprint and high efficiency are required.
Constant Current Sources
Used as a general-purpose current regulator for charging or driving high-power semiconductor loads.

Key Specifications

Type DC DC Regulator
Dimming Analog, PWM
Topology Step-Down (Buck), Step-Up (Boost)
Frequency 150kHz
Applications Lighting
Mounting Type Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width)
Number of Outputs 1
Internal Switch(s) Yes
Operating Temperature -40degC ~ 125degC (TJ)
Voltage - Supply (Max) 40V
Voltage - Supply (Min) 3V
Supplier Device Package 8-SOIC
Current - Output / Channel 1.5A (Switch)

Getting Started

To evaluate this part, use the NCP3065BBGEVB (Buck-Boost) or NCP3065DBCKGEVB (Buck) evaluation boards to test different LED string configurations. Ensure that the peak switch current does not exceed the 1.5A internal limit during circuit design.

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