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LTC3208
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LTC3208

  • 所属类别：LED驱动
  • 产品名称：高电流软件可配置型多显示屏 LED 控制器
  • 厂商：LT
  • 生产批号：11+
  • 封装：QFN
  • 库存状态：有库存
  • 库存量：20000
  • 最低订购量：1
  • 详细资料：点击查找LTC3208的pdf资料
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  • Product Introduction

LTC3208

High-current software-configurable multi-display LED controller

peculiarity The 1x/1.5x/2x charge pump provides up to 95% efficiency Up to 1A of total output current The 17 current sources can be used as MAIN, SUB, RGB, camera (CAM), and auxiliary (AUX) LED drivers A two-wire I2C™ interface can be used to set LED on/off, brightness levels, and display configurations Low-noise constant frequency operation with jumper capacitor edge rate control Automatic charging pump mode switching The internal soft-start feature limits the inrush current during start-up and mode switching Open/short-circuit LED protection Short circuit/thermal protection 256 brightness states for MAIN and SUB displays 4096 color combinations for RGB displays 5mm x 5mm 32-pin QFN plastic package description The LTC®3208 is a highly integrated multi-display LED controller. The device contains a 1A high-efficiency, low-noise charge pump for powering the main, secondary, RGB, camera, and secondary LED displays. LTC3208 A complete LED power supply and current controller is formed with only a small ceramic capacitor and a current-setting resistor. The maximum display current is set by a single external resistor. The current to each display is controlled by a precise internal current source. Dimming and on/off of all displays are achieved via an I2C serial interface. The main and secondary displays offer 256 brightness levels, and the RGB and camera displays offer 16 brightness levels. The I2C port allows the four auxiliary current sources to be independently assigned to displays controlled by CAM, SUB, MAIN, or AUX DAC. LTC3208 Charging pumps optimize efficiency based on the voltage across the LED current source. The device enters 1x mode when powered up and automatically switches to boost mode when either enabled LED current source begins to enter a voltage drop state. The first voltage drop switches the device to 1.5x mode, and the subsequent voltage drop switches LTC3208 to 2x mode. The device is available in a compact 5mm x 5mm 32-pin QFN package. apply Video/camera phone with QVGA + display

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