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MP2105DJ Datasheet(PDF) 1 Page - Monolithic Power Systems |
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MP2105DJ Datasheet(HTML) 1 Page - Monolithic Power Systems |
1 / 8 page MP2105 1MHz, 800mA Synchronous Step-Down Converter MP2105 Rev. 1.2 www.MonolithicPower.com 1 8/19/2005 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2005 MPS. All Rights Reserved. The Future of Analog IC Technology TM TM 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. The MP2105 is available in a low profile (1mm) 5-pin, TSOT package. EVALUATION BOARD REFERENCE Board Number Dimensions EV2105DJ-00A 2.0”X x 2.0”Y x 0.5”Z 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 • <0.1µA 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 “MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION MP2105 SW FB 3 5 EN GND 2 IN 1 4 OUTPUT 1.8V 800mA INPUT 2.5V to 6V MP2105_TAC_S01 OFF ON 100 90 80 70 60 50 40 30 20 10 0 10 100 1000 LOAD CURRENT (mA) MP2105-EC01 Efficiency vs Load Current VIN = 3.3V VIN = 4.2V |
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