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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