MAX8660设计的高效低IQ动态电压管理技术

本文介绍了MAX8660/MAX8661 主要特性，功能方框图，和Marvell PXA3xx处理器连接框图以及典型应用框图，MAX8660评估板主要特性，电路图和材料清单（BOM）。

MAX8660/MAX8661是Maxim 公司的应用处理器的功率管理集成电路（PMIC），特别适用于智能手机，PDA，互联网设备以及其它手提设备。器件具有四个降压DC/DC转换器输出，三个线性稳压器，以及第八个常开的LDO。两个动态控制的DC/DC输出给处理器内核和内部存储器供电。

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 应用：

PDAs, Palmtops, and Wireless Handhelds

Smart Cell Phones

Personal Media Players

Portable GPS Navigation

Digital Cameras

图1。MAX8660/MAX8661功能方框图

图1。MAX8660和Marvell PXA3xx处理器连接框图

图3。MAX8660/MAX8661典型应用框图

MAX8660评估板

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评估板主要特性：

♦ 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

图4。MAX8660评估板外形图

图5。MAX8660评估板电路图
MAX8660评估板材清单（BOM）：