DESCRIPTION

The MP9447 is a fully-integrated, highfrequency, synchronous, rectified, step-down, switch-mode converter. It offers a very compact solution to achieve a 5A, continuous-output current over a wide input-supply range with excellent load and line regulation. It also provides fast transient response and good stability for wide input-supply and load range. The MP9447 operates at high efficiency over a wide output current load range. Full protection features include SCP, OCP, UVP, and thermal shutdown. The MP9447 requires a minimal number of readily-available, standard, external components, and is available in a space-saving 3mm×4mm, 25-pin, QFN package.

FEATURES 

 Wide 4.5V-to-36V Operating Input Range 

 Guaranteed 5A, Continuous Output Current 

 Internal 65mΩ High-Side, 30mΩ Low-Side Power MOSFETs 

 Proprietary Switching-Loss-Reduction Technology  1.5% Reference Voltage 

 Programmable Soft-Start Time 

 Low Drop-out Mode  200kHz-to-650kHz Switching Frequency 

 SCP, OCP, UVP, and Thermal Shutdown 

 Output Adjustable from 0.8V to 0.9×VIN 

 Available in a 3×4mm 25-pin QFN Package

APPLICATIONS

 General Consumer 

 USB Power Supplies 

 Cigarette Lighter Adapters 

 Power Supply for Chargers

DESCRIPTION

The MP9447 is a fully-integrated, highfrequency, synchronous, rectified, step-down, switch-mode converter. It offers a very compact solution to achieve a 5A, continuous-output current over a wide input-supply range with excellent load and line regulation. It also provides fast transient response and good stability for wide input-supply and load range. The MP9447 operates at high efficiency over a wide output current load range. Full protection features include SCP, OCP, UVP, and thermal shutdown. The MP9447 requires a minimal number of readily-available, standard, external components, and is available in a space-saving 3mm×4mm, 25-pin, QFN package.

FEATURES 

 Wide 4.5V-to-36V Operating Input Range 

 Guaranteed 5A, Continuous Output Current 

 Internal 65mΩ High-Side, 30mΩ Low-Side Power MOSFETs 

 Proprietary Switching-Loss-Reduction Technology  1.5% Reference Voltage 

 Programmable Soft-Start Time 

 Low Drop-out Mode  200kHz-to-650kHz Switching Frequency 

 SCP, OCP, UVP, and Thermal Shutdown 

 Output Adjustable from 0.8V to 0.9×VIN 

 Available in a 3×4mm 25-pin QFN Package

APPLICATIONS

 General Consumer 

 USB Power Supplies 

 Cigarette Lighter Adapters 

 Power Supply for Chargers