• 简体中文
• English

MAX8661：High-Efficiency, Low-IQ, PMICs with Dynamic Voltage Management for Mobile Applications

Smallest Size and Highest Efficiency PMIC Solutions for Marvell's PXA3xx Processor

The MAX8660/MAX8661 power management ICs (PMICs) power applications processors (APs) in smart cellular phones, PDAs, Internet appliances, and other portable devices. Four step-down DC-DC outputs, three linear regulators, and an 8th always-on LDO are integrated with power-management functions. Two dynamically controlled DC-DC outputs power the processor core and internal memory. Two other DC-DC converters power I/O, memory, and other peripherals. Additional functions include on/off control for outputs, low-battery detection, reset output, and a 2-wire I²C serial interface. The MAX8661 functions the same as the MAX8660, except it lacks the REG1 step-down regulator and the REG7 linear regulator. All step-down DC-to-DC outputs use fast 2MHz PWM switching and tiny external components. They automatically switch from PWM to high-efficiency, light-load operation to reduce operating current and extend battery life. In addition, a forced-PWM option allows low-noise operation at all loads. Overvoltage lockout protects the device against inputs up to 7.5V.

Key Features 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, MAX8660A, MAX8661: Simplified Functional Diagram Applications/Uses Digital Cameras PDAs, Palmtops, and Wireless Handhelds Personal Media Players Portable GPS Navigation Systems Smart Cell Phones

DataSheet

Parametrics

Design kits & evaluation modules

• MAX8660EVCMAXQU
• MAX8660EVKIT

Ordering Information