【产品】灵活、高效、多输出的EFP01节能电源管理IC(PMIC)，输出电压1.7~5.2V

时间： 2020-05-17 来源：Silicon Labs

技术问答

SILICON LABS的EFP01节能电源管理IC（PMIC）是一种非常灵活，高效，多输出的电源管理IC，可为EFM32和EFR32器件提供完整的系统电源和一次电池电流计数。这些器件在很宽的输入电压范围（0.8至5.5 V）下工作，静态电流低至150 nA。EFP01提供三个电压输出轨和四个电源输出– 1x降压/升压转换器，1x仅降压DC-DC转换器+ LDO，1x LDO和1x开关–效率高达94％。

EFP01 PMIC通用规格

电压输出A（VOA）：

输出电压：1.7 V至5.2 V

可以将DCDC A配置为降压/升压，仅降压或仅升压

DCDC A输出与VOC线性稳压器结合使用，可在输入电压接近输出电压时更有效地进行稳压

固件可编程开关输出（VOA_SW）允许在低功耗模式下完全关闭高泄漏外部电路的电源

电压输出B（VOB）：

输出电压：

0.8 V至3.3 V（EFP0109 / EFP0111）

0.8 V至1.255 V（EFP0104 / EFP0108）

DCDC B只能在降压配置中使用

当输入电压接近输出电压时，专用的内部线性稳压器并联可提供更有效的调节

电压输出C（VOC）：

输出电压：1.7 V至3.3 V

仅线性稳压器

可用于创建独立输出或与DCDC A结合使用

电流计：

无损测量负荷中电荷（即无感测电阻）

通讯与控制：

完全可配置的I²C

直接模式支持能量模式之间的快速转换

IRQ引脚可通知主机

超低静态电流：

150 nA，未启用任何输出

300 nA，启用单个输出

每个附加输出使能，+125 nA

安全：

可编程浪涌电流

短路耐受输出

当VDDB低于1.2 V时，欠压锁定（UVLO）电路将器件保持在最低功耗复位状态

过热监控和IRQ声明

工作范围广：

0.8 V至5.5 V输入电源

结温-40至100°C

封装：

QFN20 3x3毫米

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本文由一号演员翻译自Silicon Labs，版权归世强硬创平台所有，非经授权，任何媒体、网站或个人不得转载，授权转载时须注明“来源：世强硬创平台”。

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