LSP5502

LSP5502 2A Synchronous Step Down DC/DC Converter FEATURES 2A Output Current Wide 4.5V to 27V Operating Input Range Integrated 120mΩ Power MOSFET Switches Output Adjustable from 0.925V to 24V 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 8-Pin SOP Package GENERAL DESCRIPTION The LSP5502 is a monolithic synchronous buck regulator. The device integrates 120mΩ MOSFETS that provide 2A 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. In shutdown mode, the supply current drops below 1µA. This device, available in an 8-pin SOP package, provides a very compact system solution with minimal reliance on external components. TYPICAL APPLICATION Distributed Power Systems Networking Systems FPGA, DSP, ASIC Power Supplies Green Electronics/ Appliances Notebook Computers PIN ASSIGNMENT SOP-8L (TOP View) BS IN SW GND 1 2 3 4 8 7 6 5 SS EN COMP FB PIN DESCRIPTION Name BS IN SW GND FB COMP EN SS No. 1 2 3 4 5 6 7 8 Description Bootstrap. This pin acts as the positive rail for the high-side switch’s gate driver. Connect a 0.01uF capacitor between BS and SW. Input Supply. Bypass this pin to G with a low ESR capacitor. See Input Capacitor in the Application Information section. Switch Outp...