LT3491ESC8 - Analog Devices Inc.

Manufacturer Part Number

LT3491ESC8

Manufacturer

Analog Devices

Introduction

The LT3491ESC8 is an integrated boost converter designed for driving LEDs in lighting applications.

Product Features and Performance

Integrated step-up (boost) regulator

True Color PWM™ for improved color reproduction in LED lighting

Internal power switch included

Single output LED driver

High switching frequency at 2.3MHz allowing for small external components

PWM dimming capability for brightness control

Product Advantages

High output voltage up to 27V suitable for series LED configurations

Supports input voltage from 2.5V to 12V enabling a wide range of power sources

High efficiency power conversion

Capable of driving 350mA (Switch) output current per channel for high intensity LED applications

Thermal shutdown and current limit for improved safety and reliability

Stable with ceramic output capacitors

Key Technical Parameters

Voltage - Supply (Min) 2.5V

Voltage - Supply (Max) 12V

Voltage - Output 27V

Current - Output / Channel 350mA (Switch)

Frequency 2.3MHz

Topology Step-Up (Boost)

Number of Outputs 1

Internal Switch(s) Yes

Quality and Safety Features

Thermal protection with shutdown

Internal current limit

Stable with low ESR ceramic capacitors

Compatibility

Compatible with PWM dimming techniques for LED brightness control

Application Areas

Designed predominantly for LED backlighting applications

Product Lifecycle

Product Status: Obsolete

Potential for availability of replacements or upgrades to newer models

Several Key Reasons to Choose This Product

Ideal for portable LED lighting solutions due to its wide input voltage range

Ability to drive high intensity LEDs with up to 350mA output current

High frequency operation minimizes the size of external components

Enables consistent color quality with True Color PWM™ technology

Integrated internal switch simplifies design and reduces external component count

Robust safety features ensure reliability across various operating conditions

Suitable for applications requiring low noise due to high-frequency PWM dimming compatibility