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[原创] Maxim MAX77654高度集成电池充电和电源解决方案

关键词:电源管理 PMIC DC/DC转换器 MAX77654

时间:2020-04-28 11:37:09       来源:中电网

Maxim公司的MAX77654是高度集成电池充电和电源解决方案,是单电感多输出(SIMO)降压-升压稳压器,从单个电感提供三个单独可编程的电源轨:两个100mA LDO具有波纹抑制以用于音频和其它噪音敏感的应用.LDO也可配置负载开关来管理电源功耗,高度可配置线性充电器支持大范围Li+电池容量,并包括温度监测以进一步扩展安全(JEITA).器件对所有的SIMO通路支持广泛输出电压从0.8V到5.5V.智能电源选择器Li+/Li-Poly充电器, 3x GPIO资源,用于电源检测的模拟MUX输出,器件还集成了看门狗计时器.器件的关断电流 0.3μA,工作电流(3路SIMO通路+2 LDO)为 6μA.适用于尺寸和效率至关重要的低功耗应用.中电网为您整理如下详细资料,本文介绍了MAX77654主要优势和特性,框图, SIMO详细框图,典型应用电路图以及评估套件MAX77654 EVK主要特性,框图,功能分布图,电路图,材料清单和PCB设计图.

The MAX77654 provides highly-integrated battery charging and power supply solutions for low-power applications where size and efficiency are critical. The IC features a SIMO buck-boost regulator that provides three independently programmable power rails from a single inductor to minimize total solution size. Two 100mA LDOs provide ripple rejection for audio and other noise-sensitive applications. The LDOs can also be configured as load switches to manage power consumption by disconnecting external blocks when not required. A highly-configurable linear charger supports a wide range of Li+ battery capacities and includes battery temperature monitoring for additional safety (JEITA).

This device includes three GPIOs and an analog multiplexer that swi..

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