Monolithic Power Systems MP4420
The MP4420 is a high-frequency, synchronous, rectified, step-down, switch-mode converter with built-in power MOSFETs. It offers a very compact solution to achieve a 2A continuous output current with excellent load and line regulation over a wide input supply range. The MP4420 has synchronous mode operation for higher efficiency over the output current load range.DESCRIPTION
Current-mode operation provides fast transient response and eases loop stabilization. Full protection features include over-current protection and thermal shut down. The MP4420 requires a minimal number of readily-available standard external components, and is available in a space-saving 8-pin TSOT23 package. TYPICAL APPLICATION MP4420 High Efficiency 2A, 36V, Synchronous Step Down ConverterFEATURES
● Wide 4V to 30V Continuous Operating Input Range● 36V Input Transient Tolerance for Automotive Load Dump
● 90mΩ/55mΩ Low RDS(ON) Internal Power MOSFETs
● High-Efficiency Synchronous Mode Operation
● Default 410kHz Switching Frequency
● Synchronizes to a 200kHz to 2.2MHz External Clock
● High Duty Cycle for Automotive Cold-crank
● Power-Save Mode
● Internal Soft-Start
● Power Good
● OCP Protection and Hiccup
● Thermal Shutdown
● Output Adjustable from 0.8V
● Available in an 8-pin TSOT-23 package
APPLICATIONS
● Automotive● Industrial Control System
● Distributed Power Systems All MPS parts are lead-free and adhere to the RoHS directive.