Maxim MAX77655低IQ SIMO PMIC解决方案

Maxim公司的MAX77655是高度集成的低功耗应用的电源解决方案.这些应用中尺寸和效率都是极为重要的.该器件具有单电感多输出(SIMO)降压-升压稳压器,单个电感可提供4个单独可编程的电源轨,以最小化解决方案的尺寸.PMIC可提供总700mA输出电流(3.7VIN, 1.8VOUT).双向I2C接口允许配置和检查器件的状态.支持输出电压从0.5V到4.0V,

3.7VIN和1.8VOUT时的效率高达90%.主要用在TWS蓝牙耳机/助听器,健美,健康和活动监视以及智能手表,手持设备和传感器节点和消费类物联网(IoT).本文介绍了MAX77655优势和特性,简化框图和SIMO框图,典型应用电路图以及评估板MAX77655 EVK主要特性,电路图,材料清单和PCB设计图.

 The MAX77655 provides a highly-integrated power supply solution for low-power applications where size and effi­ciency are critical. Also, it features a single-inductor, multi­ple-output (SIMO) buck-boost regulator that provides four independently programmable power rails from a single in­ductor to minimize total solution size. The PMIC is capa­ble of delivering a total of 700mA output current (3.7VIN, 1.8VOUT).

A bidirectional I2C interface allows for configuring and checking the status of the devices. An internal on/off con­troller provides a controlled startup sequence for the regu­lators and provides supervisory functionality when the de­vices are on. Numerous factory programmable options al­low the device to be tailored for many applications, en­abling faster time to market.

MAX77655优势和特性:

● Highly Integrated

• 4x Output, Single-Inductor Multiple-Output (SIMO) Buck-Boost Regulator

• Support Output Voltage Range from 0.5V to 4.0V for All SIMO Channels

• 6.9μA Typical IQ with Two Outputs Enabled in Low-Power Mode

• > 700mA Output Current at 3.7VIN and 1.8VOUT

• Up to 90% Efficiency at 3.7VIN and 1.8VOUT