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The RT4503/A is a highly integrated LED driver IC capable of driving 10 WLEDs in series. It is composed of a current mode Boost converter integrated with a 36V/1.2A power switch. <p align="justify">The RT4503/A supports a wide input voltage range from 2.5V to 5.5V and runs at a fixed frequency of 550kHz. The LED current is set via an external resistor and the feedback voltage is regulated to 200mV. </p><p align="justify">For brightness dimming, the RT4503A supports 32 steps pulse dimming which determines the feedback reference voltage, and RT4503 support PWM dimming which determines the feedback reference voltage. </p>
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  • 输入电压范围：2.5V~5.5V
  • 36V 开路保护电压，容许驱动10只 WLED
  • 脉冲调光方式
  • 参考电压 200mV，精度 ±2%
  • 550kHz 工作频率
  • 内建软启动
  • 过热保护
  • 内部补偿
  • 电流限制
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移动电话 数码相机 便携式设备
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