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AAT1236IRN-T1 LED驱动电源IC PWM,升压 背光 400KHz 2.7V ~ 5.5V 24V TDFN34-16 UDV 过电压和热保护/自动软启动

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产品描述
恒流Constant Current
恒压Constant Voltage
拓扑TopologyPWM,升压(升压) PWM, Step-Up (Boost)
输出数Number of Outputs
内部驱动器Internal Driver
初级类型Type - Primary背光 Backlight
次级类型Type - Secondary白色 LED White LED
频率Frequency400KHz
电源电压Voltage - Supply2.7V ~ 5.5V
输出电压Voltage - Output24V
Description & ApplicationsFEATURES • High Efficiency White LED Drivers for Backlight and Keypad • Input Supply Voltage Range: 2.7V to 5.5V • Maximum Boost Output Drive: Up to 24V at 100mA • Up to 85% Efficient Operation • Up to 2MHz Switching Frequency with Small Inductor • User-Programmable Full-Scale LED Current,Up to 30mA • Two-Wire, I2C Compliant Serial Interface — Two Addressable Registers • Independent LED Current Control by Group — Backlight Group B1-B2, 16 Settings — Auxiliary Group A1-A3, 16 Settings • Independent LED ON/OFF Control — Fast, 400kHz Serial Transfer Rate • Non-Pulsating, High-Performance LED Current Drive for Uniform Illumination — 10% Absolute Accuracy — 2% Channel-to-Channel Matching • Over-Voltage and Over-Temperature Protection • Automatic Soft-Start Minimizes Large Inrush Current at Startup • Available in 3x4mm TDFN34-16 Package Applications • Digital Still Cameras (DSCs) • Keypad Backlight • Large Panel Displays • Mobile Handsets • PDAs and Notebook PCs • Personal Media Players • White LED Backlight
描述与应用特点 •高效率白光LED驱动器背光和键盘 •输入电源电压范围:2.7V至5.5V •最大升压输出驱动高达24V100mA时 •高达85%的高效运行 •高达2MHz的开关频率与小型电感器 •用户可编程的满量程LED电流高达30mA •两线I2C兼容的串行接口 - 两个寻址寄存器 •独立的LED电流控制集团 - 背光集团B1,B2,16种设置 - 辅助组A1-A3,16的设置 •独立的LED ON / OFF控制 - 快速,400kHz的串行的传输速率 •非脉动,高性能的LED电流驱动器用于均匀照明 - 10%的绝对精度 - 2%的通道至通道匹配 •过电压和过温保护 •自动软启动降低大浪涌电流启动 •可在3x4mm TDFN34-16包装 应用 •数码相机(DSC) •键盘背光 •大型显示器 •移动手机 •PDA和笔记本电脑 •个人媒体播放器 •白光LED背光
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