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RT4813A允许系统使用新的化学组成的电池,当电池电压低于系统电源IC所需的电压时,可以提供显着的能量。通过结合内置的功率晶体管,同步整流和低电源电流,此IC提供了采用锂离子电池系统一个完整的解决方案。RT4813A是一个升压稳压器,设计用于从单节锂离子电池提供最小输出电压的应用,即使电池电压低于系统的最小需求电压。在升压模式中,输出电压调节保证最小负载电流为2.5A。在关断模式下的静态电流小于1μA,从而最大程度地延长电池寿命。
CMCOT架构,当VIN接近VOUT电压时,输出涟波很小
单节锂离子电池操作电压范围:1.8V~5.5V
可调输出电压:1.8V~5.5V
节能模式(PSM)
效率高达96%
输入过电流限制
输入/输出过电压保护
平均输出电流限制可调范围:3250mA~2500mA
内置补偿电路
输出放电
输出短路保护
关机状态下与负载的连接断开
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