Monolithic Power Systems NB634
The NB634 is a high efficiency synchronous rectified step-down switch mode converter with built-in internal power MOSFETs. It offers a very compact solution to achieve 5A continuous output current over a wide input supply range with excellent load and line regulation. The NB634 operates at high efficiency over a wide output current load range.DESCRIPTION
Current mode operation provides fast transient response and eases loop stabilization. Full protection features include latch-off OCP and thermal shut down. The NB634 requires a minimum number of readily available standard external components and is available in a space saving QFN14 (3mm x 4mm) package. NB634 High Efficiency 5A, 24V, 500kHz Synchronous Step-down Converter NOT RECOMMENDED FOR NEW DESIGNSFEATURES
● Wide 4.5V to 24V Operating Input Range● 5A Output Current
● Low RDS(ON) Internal Power MOSFETs
● Proprietary Switching Loss Reduction Technique
● Fixed 500kHz Switching Frequency
● Sync from 300kHz to 2MHz External Clock
● Internal Compensation
● Latch-off OCP Protection and Thermal Shutdown
● Output Adjustable from 0.8V
● Available in a QFN14 (3mmx4mm) Package
APPLICATIONS
● Notebook Systems and I/O Power● Networking Systems
● Digital Set Top Boxes
● Personal Video Recorders
● Flat Panel Television and Monitors
● Distributed Power Systems All MPS parts are lead-free and adhere to the RoHS directive.