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The RT9538 is a PWM switch mode battery charger controller to fast charge single or multiple Li-ion, NiMH and NiCd batteries, using constant current or constant voltage control. Maximum current can be easily adjusted by an external resistor. The constant voltage output can support up to 30V with 0.5% accuracy. <p align="justify">A third control loop limits the input current drawing from the adapter during charging. This allows simultaneous operation of the equipment and fast battery charging without over loading to the adapter. </p><p align="justify">The RT9538 can charge batteries from 2.5V to 25V with dropout voltage as low as 2V. A diode is not required in series with the battery because the charger automatically enters a 10&mu;A sleep mode when the adapter is unplugged. </p><p align="justify">A logic output indicates Li-ion full charge when current drops to 20% of the full-scale adjusted charge current.</p>
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  • 可对锂离子电池、镍氢电池和镍镉电池进行快速充电
  • 可调电池电压范围：2.5V~25V
  • 效率最高可达 95%
  • 充电电流用电阻设定
  • 充电电压精度： 0.5%
  • 充电电流精度：5%
  • 输入电流限制最大充电速率
  • 475kHz 工作频率
  • 有充满指示信号
  • 输入移除后自动关机
  • 待机模式下，电池消耗仅 10μA
  • 16 引脚 WQFN 封装
  • 符合 RoHS 规范，不含卤素
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笔记本电脑 便携式仪器 锂离子电池、镍氢电池、镍镉电池和铅酸电池充电器 二次电池
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