This article intends to provide you with an overview of the high-brightness LED driver ICs. You will learn about basic three types of LED driving methods, and selection of different products in terms of applications.

The intent of this article is to provide an overview of the LT3598 LED driver (datasheet) and discuss its key features and applications.

A high brightness LED evaluation board has been developed using the Fairchild Semiconductor FAN7554D PWM controller.

Welcome to the training module on Allegro MicroSystems’ Constant Current LED Driver with Programmable PWM Control.

TRIAC dimmable offline LED driver solution from National Semiconductor is perfect for any application where an LED driver must interface to a standard triac wall dimmer.

This reference design converts 90V AC to 135V AC input, and drives seven, or eight series connected LED’s from 300 to 600 mA average current. The LM3445 switching frequency is set at a nominal 225 kHz. This is a four layer board using the bottom and top layer for component placement.

Let's talk about the TRIAC dimmers. TRIAC dimmers are the standard dimmer that you have probably in your house and in many commercial, industrial applications.

The demonstration board included in this shipment converts 90VAC to 135VAC input, and drives seven, or eight series connected LED’s at 350 mA average current. The LM3445 switching frequency is set at a nominal 225 kHz. This is a four layer board using the bottom and top layer for component placement.

The LM3445 (datasheet) is an adaptive constant off-time AC/DC buck (step-down) constant current controller designed to be compatible with triac dimmers.

National Semiconductor developed LM3445 - a new constant-current controller that enables uniform, off-line, flicker-free dimming of high-brightness LEDs (light-emitting diodes) with a conventional TRIode for Alternating Current (TRIAC) forward or reverse phase-control wall dimmer.