MT3420 - ETC

MT3420 2A Synchronous Step-Down DC/DC Converter

The MT3420 is a constant frequency, current mode PWM step-down converter. The device integrates a main switch and a synchronous rectifier for high efficiency without an external Schottky diode. It is ideal for powering portable equipment that runs from a single cell Lithium-Ion (Li+) battery. The output voltage can be regulated as low as 0.6V. The MT3420 can.

Features

 High Efficiency: Up to 95%
 1.4MHz Constant Frequency Operation
 2A Output Current
 No Schottky Diode Required
 2.4V to 5.5V Input Voltage Range
 Output Voltage as Low as 0.6V
 Low Quiescent Current: 40µA
 Slope Compensated Current Mode Control for Excellent Line and Load Transient Response
 Inrush Current Limit and Soft Start
 <1µA Shutdown Current
 Available in DFN33-10 and WQFN-16L 3x3 package APPLICATIONS
 Cellular and Smart Phones
 Wireless and DSL Modems
 PDAs
 Digital Still and Video Cameras
 PC Cards GENERAL DESCRIPTION The MT3420 is a constant frequency, current mode.