Linear Technology LED Driver Selection Guide

About this manual

This document serves as a selection guide for Linear Technology's line of high-performance analog integrated circuits (ICs) specifically designed as LED drivers. It details the advantages of LEDs over traditional lighting sources and explains various driver circuit topologies available.

The guide categorizes solutions into High Current (>350mA), Medium Current (100-350mA), and Low Current (20mA to 90mA) drivers, offering both inductor-based switching regulators for series LEDs and inductorless charge pump designs for parallel configurations. It provides specific part numbers, topologies, dimming types, and electrical specifications for applications ranging from automotive lighting to portable electronic devices.

What's inside

• LEDs and LED Driver Technology
• Key Advantages of LEDs
• LED Driver Solutions Overview
• High Current LED Drivers – Buck
• High Current LED Drivers – Boost
• Medium Current LED Drivers
• Low Current LED Drivers

Specifications

Frequently asked questions

Which topology is used for driving LEDs in series?

Inductor-based Buck, Boost, Buck-Boost and SEPIC designs are generally used to drive LEDs in series.

What is the maximum input voltage range for the LT3756 Buck LED driver?

The LT3756 operates with an input voltage ranging from 24V to 80V.