Maxim MAX17710低功耗高效能量采集充电和保护方案
Maxim公司的MAX17710是低功耗高效能量采集充电和保护的完整系统,能管理输出功率从1FW到100mW的能量采集器件. MAX17710还包括一个升压稳压电路,用来从低至0.75V的电源对电池进行充电,内部的稳压器还保护电池免受过充的危害.输出电压采用LDO稳压器给目标应用供电,电压可选择为3.3V, 2.3V或1.8V,可用在智能卡,遥控无线传感器,存储器和实时时钟备用电池,半有源RFID标识,医疗设备以及高温应用,军用和航空航天与玩具等.本文介绍了MAX1771主要特性, 应用示意图和框图,功能框图, 高压和低压充电源的充电能量采集框图, 稳压器输出状态图以及MAX17710评估板主要特性,方框图,电路图,材料清单和元件布局图.
Energy-Harvesting Charger and Protector
The MAX17710 is a complete system for charging and protecting micropower-storage cells such as Infinite Power Solution’s THINERGY® microenergy cells (MECs). The IC can manage poorly regulated sources such as energy-harvesting devices with output levels ranging from 1FW to 100mW. The device also includes a boost regulator circuit for charging the cell from a source as low as 0.75V (typ). An internal regulator protects the cell from overcharging.
Output voltages supplied to the target applications are regulated using a low-dropout (LDO) linear regulator with selectable voltages of 3.3V, 2.3V, or 1.8V. The output regulator operates in a selectable low-power or ultra-low-power mode to minimize drain of the cell. Internal voltage protection prevents the cell from overdischarging.
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