MAX1586AETM+

MAXIM INTEGRATED PRODUCTS  MAX1586AETM+  芯片, 电源管理

The is a high efficiency, low-IQ power management IC with dynamic core in 48 pin TQFN package. This PMIC is optimized for device using Intel XScale microprocessors, including smart phones, PDAs, internet appliances and other portable devices requiring substantial computing and multimedia capability at low power. It integrates seven high performance, low operating current power supplies along with supervisory and management functions. Included are three step-down DC-DC outputs, three linear regulators and a seventh always-on output. DC-DC converters power I/O, DRAM and CPU core. The I/O supply can be preset to 3.3V or adjusted to other values. To minimize quiescent current, critical power supplies have bypass "sleep" LDO that can be activated when output current is very low. Other functions include separate on/off control for all DC-DC converters, low battery and dead battery detection, a reset and power-OK output, a backup-battery input and two-wire serial interface.

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Supply Voltage is 5.5V

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Operating temperature range from -40°C to 85°C

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Step-down DC-DC for I/O at 1.3A, step-down DC-DC for memory at 0.9A

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Step-down serial-programmed DC-DC for CORE up to 0.9A

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Three LDO outputs for SRAM, PLL and USIM, always-on output for VCC_BATT

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Low operating current is 60µA in sleep mode sleep LDO on, 130µA with DC-DC on core off

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200µA regulator on, no load & 5µA shutdown current

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Optimized for XScale processors

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Backup battery input

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1MHz PWM switching allows small external components