LT3497

• Product Introduction

The LT3497 dual-function all-white LED driver integrates Schottky diodes

description This is a full-featured LT3497 STEP-UP DC/DC converter specially designed to FI drive up to 12 white LEDs (6 white LEDs per converter) from a lithium-ion battery. The series connected light-emitting diodes provide the same current to produce uniform brightness, eliminating the need for ballast resistance and your factory calibration. Two independent converters are capable of driving asymmetric LED strings. The two LED strings for accurate LED dimming and shutdown can also be controlled independently. The LT3497 has a unique high-side current that enables the part to function as a "one-line current source; One side can be returned to the ground, making a simple single-lead connection. Traditional LED drivers use a ground resistor to induce current, requiring a 2-wire LED string. The switching frequency of 2.3 MHz allows for the use of small inductors and capacitors. Few external components require dual diodes and Schottky diodes: open-drive protection is included in a millimeter ×mm package. With this high level of integration, the LT3497 offers a high-efficiency dual white light-emitting diode drive solution in the smallest of spaces. apply Cellular phones Laptop, handheld computer Digital camera Music player GPS receiver