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RT8005为内建P-通道 与 N-通道 功率级MOSFET 开关组件的PWM同步降压型DC/DC转换器,输入范围2.4V至5.5V,可输出电流达1A,可调输出电压最低可至0.5V。RT8005适用于由单一锂电池或镍氢/镍镉电池供电的可携式电子装置。RT8005由于操作在PWM恒定2MHz的切换频率,可适用较小的 CIN, COUT 电容与电感组件的设计,并内建两组低RDS(ON) 分别为高端230mΩ 与低端180mΩ 的MOSFET开关组件,减少电路板中所需的设计面积,只需加入电阻、电容与一个电感组件即可完成设计,另包含内建的缓启动机制、电路致能控制、过热与过电流保护等功能。RT8005采用小型可节省电路设计面积的VDFN-10L 3x3的封装。
2.4V 至 5.5V输入电压范围
0.5V 至VIN可调输出电压范围
1A输出电流
高精确度的参考电压: 0.5V (± 1.5%)
转换效率高达90%
静态电流: 200μA
内建两组低RDS(ON)的MOSFET开关组件:高端230mΩ 与低端180mΩ
PWM电流模式操作
恒定操作频率: 2MHz
近100%的占空比操作允许输出低压降转换
内建的缓启动机制
不需外接萧特基二极管
具过热与过电流保护机制
采用小型的VDFN-10L 3x3的封装
符合RoHS规范与100%的引脚无铅特性
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