ADP3205J

The ADP3205J is one member of the ADP3205 series.The ADP3205 is a 1-, 2-, or 3-phase hysteretic peak current mode dc-to-dc buck converter controller dedicated to powering a mobile processor's core. The chip optimized low voltage design runs from the 3.3 V system supply. ADP3205J contains a precision 6-bit DAC whose nominal output voltage is set by VID code. The ADP3205 features high speed operation to allow a minimized inductor size that results in the fastest possible change of current to the output.

Features of the ADP3205J are:(1)pin programmable 1-, 2-, or 3-phase operation;(2)excellent static and dynamic current sharing;(3)noise-blanking for speed and stability;(4)synchronous rectification control for optimized light load efficiency;(5)soft DAC output voltage transition for VID change;(6)latched or hiccup current overload protection;(7)masked power good during output voltage transients;(8)soft start-up without power-on in-rush current surge.

To further minimize the number of output capacitors, the converter features active voltage positioning enhanced with ADOPT optimal compensation to ensure a superior load transient response.The output signals interface with ADP3415 MOSFET drivers,which that are optimized for high speed and high efficiency. The ADP3205J is capable of providing synchronous rectification control to extend battery lifetime in light load conditions.The ADP3205J is specified over the extended commercial temperature range of 0°C to 100°C and is available in a 40-lead LFCSP package.Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective companies.

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