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The RT9703 is a low voltage, high performance single N-MOSFET power switch, designed for power rail on/off control with low RDS(ON) ≈ 80mΩ and full protection functions. The RT9703 equipped with a charge pump circuitry to drive the internal MOSFET switch and a flag output is available to indicate fault conditions against large di/dt which may cause the supply to fall out of regulation. In order to fit different application, an IP pin is offered for current limit point setting, a resistor from IP to ground sets the current limit for the switch.
Additional features include soft-start to limit inrush current during plug-in, thermal shutdown to prevent catastrophic switch failure from high-current loads, under-voltage lockout (UVLO) to ensure that the device remains off unless there is a valid input voltage present, a precision resistor-programmable output current limit up to 3.5A. Besides, the lower quiescent current as 30μA making this device ideal for portable battery-operated equipment.
The RT9703 is available in SOP-8 package requiring minimum board space and smallest components.
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  • 可调的电流限制可高达 3.5A
  • 内置典型值为 80mΩ 的 N-MOSFET
  • 具有反向电流阻止功能（没有本体二极管），在关闭状态下容许输出端电压高于输入端电压
  • 低电流消耗:
    ►导通状态下的电流消耗为 30μA
    ►关闭状态下的电流消耗低于 1μA
  • 确保 3A 持续电流输出能力
  • 宽输入电压范围： 2V~5.5V
  • 开漏故障信号输出
  • 适合热插入应用
  • 1.7V 典型值欠压锁定(UVLO)
  • 热关机保护
  • SOP-8 封装
  • 符合 RoHS 标准及 100% 不含铅
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液晶电视、监视器 用于 ADSL 的 USB 供电模块 信息设备，机顶盒 电池供电设备 热插入电源 ACPI 电源分配装置 PCI 总线电源开关 计算机主板和笔记本电脑
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