JW5393杰华特DCDC同步降压方案.pdf

JW5393/JW5393F 18V/3A Sync. Step-Down Converter Preliminary Specifications Subject to Change without Notice DESCRIPTION FEATURES ® ® The JW 5393 and JW 5393F are monolithic buck  4.5V to 18V operating input range switching regulators based on I2 architecture for 3A output current fast transient response. Operating with an input  Up to 95% efficiency range of 4.5V~ 18V, JW5393 and JW5393F  PFM mode (JW5393) at light load deliver 3A of continuous output current with two  FCC mode (JW5393F) at light load integrated N-Channel MOSFETs. The internal  600kHz switching frequency synchronous power switches provide high  Internal soft-start efficiency without the use of an external Schottky  Input under voltage lockout diode. At light loads, JW5393 operates in low  Current run-away protection frequency to maintain high efficiency.  Output short protection  Thermal protection JW5393 and JW5393F guarantee robustness  Available in SOT563 package with output short protection, thermal protection, 制 APPLICATIONS current run-away protection and input