LT3478EFE - Analog Devices Inc.

Manufacturer Part Number

LT3478EFE

Manufacturer

Analog Devices

Introduction

LT3478EFE is a versatile, high-power LED driver with an internal switch.

Product Features and Performance

Integrated DC-DC regulator

Supports step-down (buck) and step-up (boost) topologies

Internal switching transistor

Single output channel

Adjustable frequency from 200kHz to 2.25MHz

PWM dimming capability

Designed for driving high-power LEDs

Product Advantages

Flexible power supply range from 2.8V to 36V

Capable of outputting up to 42V

High current output of 4.5A at the switch

True Color PWM™ for precise color and brightness control

Can be used in high-temperature environments up to 125°C

Key Technical Parameters

Voltage Supply (Min): 2.8V

Voltage Supply (Max): 36V

Voltage Output: 42V

Current Output / Channel: 4.5A (Switch)

Frequency: 200kHz ~ 2.25MHz

Number of Outputs: 1

Quality and Safety Features

Over-temperature protection

Robust design suitable for high-temperature operation

Compatibility

Suitable for surface mount technology

TSSOP-16 package with Exposed Pad for improved thermal performance

Application Areas

High power LED backlighting applications

Product Lifecycle

Product status is obsolete

Potential need to seek replacement or upgrade models

Several Key Reasons to Choose This Product

High switch current capability for driving multiple LEDs or high-brightness LEDs

Broad input voltage range offers design flexibility for various power sources

High-frequency operation enables the use of smaller external components

True Color PWM™ provides excellent color fidelity and dimming smoothness

The high-temperature operational range ensures reliability in harsh environments

Analog Devices' reputation for quality and performance