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DESCRIPTION

The MP2105 is a 1MHz 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 MP2105 can supply 800mA of load current from a 2.5V to 6V input voltage. The output voltage can be regulated as low as 0.6V. The MP2105 can also run at 100 duty cycle for low dropout applications.

FEATURES

? High Efficiency: Up to 95

? 1MHz Constant Switching Frequency

? 800mA Available Load Current

? 2.5V to 6V Input Voltage Range

? Output Voltage as Low as 0.6V

? 100 Duty Cycle in Dropout

? Current Mode Control

? Short Circuit Protection

? Thermal Fault Protection

? <0.1?A Shutdown Current

? Space Saving 5-Pin TSOT23 Package

APPLICATIONS

? Cellular and Smart Phones

? Microprocessors and DSP Core Supplies

? PDAs

? MP3 Players

? Digital Still and Video Cameras

? Portable Instruments