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RT8012A为PWM双通道同步降压型DC/DC 转换器,输入电压范围从2.6V至5.5V,可调的输出电压范围0.8V至5V,输出电流可达2A。操作在恒定频率1.2MHz,可适用于采用价格较低廉、较小尺寸的电容与电感元件的应用电路设计中。双通道的降压型DC/DC 转换器内建低导通阻的功率开关,增进了整体效率并减少了需要外加萧特基二极管的必要性。RT8012A藉由近100%占空比的操作提供了低压差转换的应用可有效延长掌上型装置的电池使用寿命,并具备了致能控制与电源良好信号指示脚位元,可在一般的应用中,简易的控制两组转换器的启动顺序。
效率高达95%
1.2MHZ恒定切换频率
1A 与1.5A 的两组通道输出电流
低RDS(ON) 的内部开关
不需外接萧特基二极管
0.8V的参考电压允许低电压输出
近100%的占空比操作允许输出低压降转换
内建补偿机制
< 2μA 的停机电流
输出电压电源良好信号指示
内建缓启动机制
简易的启动顺序控制
过热保护
短路保护
加强散热特性的16-引脚 WQFN封装
符合RoHS规范与100%的引脚无铅特性
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