DESCRIPTION

The MP2109 contains two independent 1.2MHz constant frequency, current mode, PWM step-down converters. Each converter integrates a main switch and a synchronous rectifier for high efficiency without an external Schottky diode. The MP2109 is ideal for powering portable equipment that runs from a single cell Lithium-Ion (Li+) battery. Each converter 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 MP2109 can also run at 100 duty cycle for low dropout applications.

FEATURES

? Up to 95 Efficiency

? 1.2MHz Constant Switching Frequency

? 800mA Load Current on Each Channel

? 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

? <0.1μA Shutdown Current

? Internally Compensated

? Space Saving 10-Pin QFN Package

APPLICATIONS

? Cellular and Smart Phones

? Microprocessors and DSP Core Supplies

? PDAs

? MP3 Players

? Digital Still and Video Cameras

? Portable Instruments