LSP5522

LSP5522 2A Synchronous Step Down DC/DC Converter Features 2A Output Current Wide 4.5V to 23V Operating Input Range Integrated Power MOSFET Switches Output Adjustable from 0.925V to 18V Up to 96% Efficiency Programmable Soft-Start Stable with Low ESR Ceramic Output Capacitors Fixed 400KHZ Frequency Cycle-by-Cycle Over Current Protection Input Under Voltage Lockout Package SOP-8L General Description The LSP5522 is a monolithic synchronous buck regulator. The device integrates 150mΩ MOSFETS that provide 2A continuous load current over a wide operating input voltage of 4.5V to 23V. Current mode control provides fast transient response and cycle-by-cycle current limit. An adjustable soft-start prevents inrush current at turn on. In shutdown mode, the supply current drops below 1uA. Applications Distributed Power Systems Networking Systems FPGA, DSP, ASIC Power Supplies Green Electronics/ Appliances Notebook Computers Typical Application Circuit C6 10nF V IN = 1 2 V R4 100K BS L1 V IN V O U T = 5 V /2 A SW LSP5522 EN FB GND COMP C4 16nF 10uH R1 C1 22uF C3 0 .1 u F SS 4 4 .2 K C7 22uF x 2 C5 R2 10K R3 10K NC shows a sample LSP5522 application circuit generating 5V/2A output Please be aware that an Important Notice concerning availability, disclaimers, and use in critical applications of LSC products is at the end of this document. 1 of 13 Rev1.2 www.liteon-semi.com LSP5522 2A Synchronous Step Down DC/DC Converter Ordering Information LSP5522 X X X Package ...