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
| 恒流Constant Current | |
| 恒压Constant Voltage | |
| 拓扑Topology | PWM，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Frequency | 400KHz |
| 电源电压Voltage - Supply | 2.7V ~ 5.5V |
| 输出电压Voltage - Output | 24V |
| Description & Applications | FEATURES • 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 |
| 规格书PDF |
