请问如何通过锂电池(3V-4.2V)给CC2541(input: 2-3.6V)供电?选哪个型号的LDO(或者DC-DC?)能兼顾功耗小和PCB面积小(功耗最重要)?还要不要用TPS62730(输入1.9-3.9V,输出2.1V,只在BLE发送、接收数据时开启)?
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您好,TPS62730主要是针对3V非充电电池系统,具有很低的静态功耗和bypass功能
对于锂电池供电可充电系统的话,就要看你对功耗要求到底有多高?是对效率要求高一下还是对静态电流要求高一些?
TPS62740是针对锂电池系统优化的,只用一颗就好。