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MT3406 1A,2V-6V Input,1.5MHz Synchronous Step-Down Converter

The MT3406 is a constant frequency, current
mode 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 MT3406
can also run at 100% duty cycle for low dropout
operation, extending battery life in portable
system. This device offers two operation
modes, PWM control and PFM Mode switching
control, which allows a high efficiency over the
wider range of the load. The MT3406 is offered in a low profile 5-pin, SOT package, and is available in an Adjustable
version.

FEATURES
 High Efficiency: Up to 96%
 1.5MHz Constant Frequency Operation
 1A Output Current
 No Schottky Diode Required
 2V to 6V Input Voltage Range
 Output Voltage as Low as 0.6V
 PFM Mode for High Efficiency in Light
Load
 100% Duty Cycle in Dropout Operation
 Low Quiescent Current: 10μA
 Slope Compensated Current Mode
Control for Excellent Line and Load
Transient Response
 Short Circuit Protection
 Thermal Fault Protection
 Inrush Current Limit and Soft Start
 <1μA Shutdown Current
 SOT23-5 package
APPLICATIONS
 Cellular and Smart Phones
 Wireless and DSL Modems
 PDAs
 Portable Instruments
 Digital Still and Video Cameras
 DTV