SMALLEST, COMPLETE POWER MANAGEMENT IC FOR INTEL(R) PXA210 AND PXA250 MICROPROCESSOR-BASED PRODUCTS
SUNNYVALE, CA-May 28, 2002-Maxim Integrated Products introduces the MAX1702B-the smallest, most efficient power management IC designed specifically for the Intel® PXA210 and PXA250 microprocessors. These microprocessors are based on Intel® XScale™ micro-architecture and are used in PDAs, 3G smart phones, and other hand-held products. The MAX1702B features three ultra-high-performance (>90%) step-down converters with fast 1MHz synchronous rectification that eliminate the need for external diodes, saving cost and size. It fits in a 1mm high, 6mm x 6mm 36-pin QFN package.
The MAX1702B provides three outputs: Regulator 1 provides a fixed 3.3V output voltage designed to power the microprocessor I/O and other peripheral circuitry, and delivers up to 900mA. The microprocessor core is powered from Regulator 2, which has an adjustable 0.7V to VIN output, providing up to 400mA. The third output, Regulator 3, is designed to power memory. It is set to one of three voltages: 3.3V, 2.5V, or 1.8V and delivers up to 800mA.
All three regulators utilize a proprietary regulation scheme allowing pulse-width modulation (PWM) operation at medium to heavy loads, and automatically switch to pulse skipping at light loads for improved efficiency.
Power management functions include automatic power-up sequencing, power-on reset, manual reset, output regulation monitoring, and two levels of low-battery detection. Quiescent current in sleep mode (Regulators 1 and 3 running) is a low 400µA and drops to only 5µA when all the switches are off. Thermal-overload protection automatically limits power dissipation and junction temperature to safe levels. The MAX1702B comes in a small 6mm x 6mm 36-pin QFN package and is screened for the extended-industrial temperature range (-40°C to +85°C). Prices start at $5.00 (1000-up, FOB USA). An evaluation kit is available to speed designs.
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