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SystemPowerTM
PRODUCT DATASHEET
AAT2789
Low Noise, High Frequency Dual Step-Down Converter
General Description
The AAT2789 is a 2-channel synchronous step-down converter operating from an input voltage range of 2.7V to 5.5V, making it the ideal choice for single-cell Lithiumion/polymer battery powered systems or low voltage 3.3V and 5V based consumer equipment.
Channel 1 delivers up to 1700mA output current while Channel 2 delivers up to 800mA. Both converters incorporate a unique low noise architecture which reduces output ripple and spectral noise.
The AAT2789 uses a high switching frequency to minimize external filter sizing. Peak current mode control eliminates external compensation while optimizing transient performance and stability.