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LM3632A Single-Chip Backlight with Bias Power and 1.5-A Flash LED Driver

 2015-06-17

【产品特性】

•Best LCD user experience
•Saves battery power and prolongs usage time
•Allows for lower voltage components to be chosen, potentially saving cost and size
•Integrated solution for saving PCB space and component placement
•Best uniform screen performance and low current white balance
•The right amount of flash current for the mid to high end smartphones

【产品应用】

•Smartphones
•Tablets

【文字介绍】

The LM3632A integrates the WLED drivers for both the backlight of the LCD panel and the camera flash along with the bias power for the LCD panel into one device. The device has all the safety features required in LED drivers with up to 90% efficiency and bias positive/negative power rails achieving 1.5% accuracy. Capable of driving up to 16 backlight LEDs, the device is ideal for small- to medium-size displays. A 1.5-A constant-current LED driver powered by a synchronous boost converter can be used for flash applications. The high-side flash current source allows for grounded cathode LED operation. A high level of integration and programmability allows the LM3632A to address a variety of applications without the need for hardware changes.