MAX8660設(shè)計的高效低IQ動態(tài)電壓管理技術(shù)

本文介紹了MAX8660/MAX8661 主要特性，功能方框圖，和Marvell PXA3xx處理器連接框圖以及典型應(yīng)用框圖，MAX8660評估板主要特性，電路圖和材料清單（BOM）。

MAX8660/MAX8661是Maxim 公司的應(yīng)用處理器的功率管理集成電路（PMIC），特別適用于智能手機，PDA，互聯(lián)網(wǎng)設(shè)備以及其它手提設(shè)備。器件具有四個降壓DC/DC轉(zhuǎn)換器輸出，三個線性穩(wěn)壓器，以及第八個常開的LDO。兩個動態(tài)控制的DC/DC輸出給處理器內(nèi)核和內(nèi)部存儲器供電。

MAX8660/MAX8661 主要特性：

_ Optimized for Marvell’s PXA300 and Armada 100 Family of Processors

_ Protected to 7.5V—Shutdown Above 6.3V

_ Four Synchronous Step-Down Converters REG1, REG2, REG3, REG4

_ Four LDO Regulators REG5, REG6, REG7, REG8

_ 2MHz Switching Allows Small Components

_ Low, 20μA Deep-Sleep Current

_ Low-Battery Monitor and Reset Output

MAX8660/MAX8661 應(yīng)用：

PDAs, Palmtops, and Wireless Handhelds

Smart Cell Phones

Personal Media Players

Portable GPS Navigation

Digital Cameras

圖1。MAX8660/MAX8661功能方框圖

圖1。MAX8660和Marvell PXA3xx處理器連接框圖

圖3。MAX8660/MAX8661典型應(yīng)用框圖

MAX8660評估板

MAX8660 evaluation kit (EV kit)

The MAX8660 evaluation kit (EV kit) is a fully assembled and tested PCB that accepts an input from 2.6V to 6.0V and provides the output voltages and power-management features used by applications processors. The MAX8660 integrates four step-down DC-DC regulators and four LDO linear regulators. Additional features include on/off control for outputs, low-battery detection, reset output, and a 2-wire I2C serial interface.

The MAX8660 evaluation system (EV system) includes a MAX8660 EV kit and a Maxim CMAXQUSB+ serialinterface board. The CMAXQUSB+ board connects to a PC’s USB port and allows the transfer of I2C to the MAX8660 EV kit.

The MAX8660 EV kit comes with the MAX8660 installed, but can also be used to evaluate the MAX8660A, MAX8660B, and MAX8661.

MAX8660評估板主要特性：

? Optimized for Marvell PXA3xx and PXA168 Applications Processors

? Four Synchronous Step-Down DC-DC Regulators

? Four LDO Linear Regulators

? 2MHz Switching Allows Small Components

? Low 20μA Deep-Sleep Current

? Low-Battery Monitor and Reset Output

? 40-Pin, 5mm x 5mm x 0.8mm Thin QFN Package

? Fully Assembled and Tested

? Includes Microsoft Windows 98SE/2000/XP-

Compatible Evaluation Software

圖4。MAX8660評估板外形圖

圖5。MAX8660評估板電路圖
MAX8660評估板材清單（BOM）：