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NCP3065

ONNCP3065

onsemi
Onsemi switching regulator commonly used in LED driver applications; suitable as an alternative topology.
Active5,928 in stock

Overview

The NCP3065 is a monolithic switching regulator specifically designed for high-brightness LED applications. It operates with a wide input range of 3V to 40V and includes an internal 1.5A switch, allowing for various power topologies such as buck, boost, and buck-boost (SEPIC).

Why Choose This Part

This regulator offers high-frequency operation at 150kHz and includes built-in open LED and output short-circuit protection. It supports both PWM and analog dimming, providing engineers with flexible control over LED brightness while minimizing component count with its internal switch.

Applications

Automotive LED Lighting
Ideal for rugged automotive environments requiring constant current for LED arrays.
Low Voltage Track Lighting
Used in 12V or 24V lighting systems to maintain consistent brightness regardless of voltage drops.
Portable LED Flashlights
Efficiently drives high-power LEDs from battery sources in compact designs.
Landscape Lighting
Powers outdoor LED fixtures using its wide operating temperature range and robust protection features.

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

Engineers can evaluate the design using the NCP3065D3SLDGEVB evaluation board, which demonstrates a SEPIC topology for 700mA current regulation. Designers should focus on inductor selection and feedback resistor values to set the target constant current output based on the 235mV internal reference voltage.

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