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2MHz 500mA Synchronous PFM/PWM Buck Regulator
CAD Models Overview
- VIN Min V (volt):2.7
- VIN Max V (volt):5.5
- IOUT Max mA (milliampere):500
- Switching Frequency Max kHz (kilohertz):2000
- VOUT Min V (volt):0.8
- VOUT Max V (volt):4.5
- Small packages: TSOT-23 and 2x3 DFN
- PWM/PFM automatic transistion
- Over current and temperature protection
- Automatic PWM/PFM mode transition
- Eff. 90%, Shutdown Current 100 nA
- Small passives 4.5 microhenry, 4.5 microfarad
The MCP1603 is a high efficiency fully integrated 500 mA 2.0 MHz synchronous buck regulator ideally suited for Li-Ion/NiMH Battery powered application powered.
At heavy loads, the MCP1603 operates in the 2.0 MHz fixed frequency PWM mode which provides a low noise, low output ripple, small-size solution. When the load is reduced to light levels, the MCP1603 automatically changes operation to a PFM mode to minimize quiescent current draw from the battery. No intervention is necessary for a smooth transition from one mode to another. These two modes of operation allow the MCP1603 to achieve the highest efficiency over the entire operating current range.
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Tools And Software
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Demo & Evaluation Boards
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 Online power solutions, accelerated
MPLAB Analog Designer (MAD) allows you to choose an existing solution or customize a suggested design. Schematics and component lists are included. View or modify your choice and, with one click, export the design files to MPLAB Mindi Analog Simulator for verification and analysis.
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| The MCP1603 Buck Converter Demo Board uses Microchip’s MCP1603 device in a step-down application.
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["developmentenvironment","Development Environment"] ,
["emulators","Emulator and Debuggers"] ,
["demoevaluationboards","Demo & Evaluation Boards"] ,
["programmerrelations","Programmers"] ,
["thirdpartytools","3rd Party Tools"] ,
["legacy","Legacy"] ,
["softwarelibraries","Library and Firmware"]
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