LSP5523

LSP5523 3A 27V Synchronous Buck Converter General Description The LSP5523 is a monolithic synchronous buck regulator. The device integrates 90 mΩ MOSFETS that provide 3A continuous load current over a wide operating input voltage of 4.5V to 27V. Current mode control provides fast transient response and cycle-by-cycle current limit. An adjustable soft-start prevents inrush current at turn on. Features  3A Output Current  Wide 4.5V to 27V Operating Input Range  Fixed 340KHZ Frequency  Integrated Power MOSFET Switches  Output Adjustable from 0.925V to 0.8Vin  Up to 93% Efficiency  Programmable Soft-Start  Stable with Low ESR Ceramic Output Capacitors  Cycle by Cycle Over Current Protection  Short Circuit Protection  Input Under Voltage Lockout  Package： ESOP-8L Applications  Distributed Power Systems  Networking Systems  FPGA, DSP, ASIC Power Supplies  Green Electronics/ Appliances  Notebook Computers 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. LSP5523 Rev. 1.1 1 of 15 www.liteonsemi.com 2014/8/27 LSP5523 Block Diagram FB 5 1.1V 0.3V SS 8 0.925V COMP 6 EN 7 2.5V 1.5V 3A 27V Synchronous Buck Converter OVP RAMP OSCILLATOR 340/120KHz CLK ERROR AMPLIFIER 6uA CURRENT SENSE AMPLIFIER SQ RQ CURRENT COMPARATOR 2 VIN 5V 1 BS 3 SW EN OK LOCKOUT COMPARATOR SHUTDOWN COMPARATOR 1.2V OVP 4 GND IN<4.10V IN INTERNAL REGULATORS Ordering In...