MAX8660

www.DataSheet4U.com 19-0587; Rev 0; 8/06 High-Efficiency, Low-IQ, PMICs with Dynamic Voltage Management for Mobile Applications General Description The MAX8660/MAX8661 power management ICs (PMICs) power Intel XScale® applications processors 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 powermanagement functions. Two dynamically controlled DCDC 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 lownoise operation at all loads. Overvoltage lockout protects the device against inputs up to 7.5V. Features o Optimized for Intel XScale Processors o Protected to 7.5V—Shutdown Above 6.3V o Four Synchronous Step-Down Converters REG1, REG2, REG3, REG4 o Four LDO Regulators REG5, REG6, REG7, REG8 o 2MHz Switching Allows Small Components o Low, 20µA Deep-Sleep Current o Low-Battery ...