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LTC3419 - Dual Monolithic 600mA Synchronous Step-Down Regulator

Description

The LTC®3419 is a dual, 2.25MHz, constant-frequency, synchronous step-down DC/DC converter in a tiny 3mm × 3mm DFN package.

100% duty cycle provides low dropout operation, extending battery life in portable systems.

Low output voltages are supported with the 0.6V feedback reference voltage.

Features

  • n High Efficiency Dual Step-Down Outputs: Up to 96% n 600mA Current per Channel at VIN = 3V n Only 35μA Quiescent Current During Operation (Both Channels) n 2.25MHz Constant-Frequency Operation n 2.5V to 5.5V Input Voltage Range n Low Dropout Operation: 100% Duty Cycle n No Schottky Diodes Required n Internally Compensated for All Ceramic Capacitors n Independent Internal Soft-Start for Each Channel n Available in Fixed Output Versions n Current Mode Operation for Excellent Line and Load Transien.

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Full PDF Text Transcription

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FEATURES n High Efficiency Dual Step-Down Outputs: Up to 96% n 600mA Current per Channel at VIN = 3V n Only 35μA Quiescent Current During Operation (Both Channels) n 2.25MHz Constant-Frequency Operation n 2.5V to 5.5V Input Voltage Range n Low Dropout Operation: 100% Duty Cycle n No Schottky Diodes Required n Internally Compensated for All Ceramic Capacitors n Independent Internal Soft-Start for Each Channel n Available in Fixed Output Versions n Current Mode Operation for Excellent Line and Load Transient Response n 0.
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