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The RT9278 is a compact, high efficiency, synchronous step-up converter, it provides a power supply solution for products powered by either two-cell, three-cell Alkaline/NiMH or one-cell Li-Ion/Li-polymer battery.The RT9278 is boost converter with PWM control loop, provide up to 95% efficiency by using a synchronous rectifier. The maximum peak current in the internal switch is limited to up to 2A.It keeps the output voltage regulated when the input voltage exceeds the setting output voltage. The output voltage can be set by an external resister divider, or be fixed to reduce external components. It integrates a linear controller for linear regulator.RT9278 is available in VDFN-10L 3x3 package.
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  • 效率高达95%的同步升压转换器
  • 具有很高的负载能力
  • 开关电流限制为 2A
  • 输入电压范围为 1.5V~5.5V
  • 600kHz 恒定工作频率
  • 输出电压可调，最高为 5.5V
  • 可在输入电压超过输出电压设定值时保持输出电压稳定
  • 关机状态下耗电 1μA
  • 使用外部补偿网络
  • 内建线性控制器实现线性调节功能
  • 有过热保护功能
  • 小型10引脚 VDFN 封装
  • 符合 RoHS 规范，100%无铅封装
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