DESCRIPTION
The LT® 3506 is a dual current mode PWM step-down DC/DC converter with internal 2A power switches. Both convert ers are synchronized to a single oscillator and run with opposite phases, reducing input ripple current. The output voltages are set with external resistor dividers, and each regulator has independent shutdown and soft-start circuits.

FEATURES
■  Wide Input Voltage Range, 3.6V to 25V
■  Two 1.6A Output Switching Regulators with Internal Power Switches
■  Constant Switching Frequency
     LT3506: 575kHz
     LT3506A: 1.1MHz
■  Anti-Phase Switching Reduces Ripple
■  Accurate 0.8V Reference, ±1%
■  Independent Shutdown/Soft-Start Pins
■  Independent Power Good Indicators Ease Supply Sequencing
■  Uses Small Inductors and Ceramic Capacitors
■  Small 16-Lead Thermally Enhanced 5mm × 4mm DFN and TSSOP Surface Mount Packages

APPLICATIONS
■  Disk Drives
■  DSP Power Supplies
■  Wall Transformer Regulation
■  Distributed Power Regulation
■  DSL Modems
■  Cable Modems