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LT3572 Dual Full-Bridge Piezo Driver with 900mA Boost Converter
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FEATURES
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DESCRIPTION
The LT®3572 is a highly integrated dual Piezo motor driver capable of driving two Piezo motors at up to 40V from a 5V supply. Each Piezo driver can be independently turned on or off along with the boost converter. The boost regulator has a soft-start capability that limits the inrush current at start-up. The boost regulator switching frequency is set by an external resistor or the frequency can be synchronized by an external clock. A PGOOD pin indicates when the output of the boost converter is in regulation and the Piezo drivers are allowed to start switching. The LT3572 is available in a (4mm × 4mm) 20-pin QFN package.