DESCRIPTION

The MP2104 is a 1.7MHz 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 MP2104 can supply 600mA of load current from a 2.5V to 6V input voltage. The output voltage for the MP2104DJ can be regulated as low as 0.6V, while the output voltages of the MP2104DJ-1.5 and MP2104DJ-1.8 are fixed at 1.5V and 1.8V, respectively. The MP2104 can also run at 100% duty cycle for low dropout applications.

FEATURES

• High Efficiency: Up to 95%
• 1.7MHz Constant Switching Frequency
• 600mA 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
• <0.1µA Shutdown Current
• 1.5V and 1.8V Fixed Output Versions
• 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