LM3631中文资料适用于 LCD 面板的集成式 WLED 背光驱动器和偏置电源数据手册TI规格书

描述 Description

The LM3631 is a complete LCD backlight and bias power solution for mobile devices. This one-chip solution has an integrated high-efficiency backlight LED driver and positive/negative bias supplies for LCD drivers addressing the power requirements of high-definition LCDs. Integrated solution allows small solution size while still maintaining high performance. Capable of driving up to 16 LEDs, the LM3631 is ideal for small- to medium-size displays. Two additional programmable LDO regulator outputs can be used to power display controller, LCD gamma reference, or any additional peripherals.A high level of integration and programmability allows the LM3631 to address a variety of applications without the need for hardware changes. Voltage levels, backlight configuration, and power sequences are all configurable through I2C interface.

特性 Features

• Drives up to Two Strings with Maximum of Eight LEDs in Series
• Two Low-Side Constant-Current LED Drivers with 25-mA Maximum Output Current
• Backlight Efficiency Up to 90%
• External PWM Input for CABC Backlight Operation
• Programmable Positive LCD bias, 4-V to 6-V, 100-mA Maximum Output Current
• Two Positive Programmable LDO Reference Outputs
• 1.8-V to 3.3-V, 80-mA Maximum Output Current
• 2.7-V to 5-V Input Voltage Range