YB1693

YB1693 3A Synchronous Step-Down Converter Description The YB1693 is a monolithic synchronous buck regulator. The device integrates 130mΩ MOSFETS that provide 2A continuous load cur- rent over a wide operating input voltage of 4.75V 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 cur- rent drops below 1μA. This device, available in an 8-pin SOP pack- age, provides a very compact system solution with minimal reliance on external components. Features            3A Output Current Wide 4.75V to 23V Operating Input Range Integrated 100mΩ Power MOSFET Switches Output Adjustable from 0.925V to 20V Up to 95% Efficiency Programmable Soft-Start Stable with Low ESR Ceramic Output Capaci- tors Fixed 450KHz Frequency Cycle-by-Cycle Over Current Protection Input Under Voltage Lockout Thermally Enhanced 8-Pin SOP Package Applications      Distributed Power Systems Networking Systems FPGA, DSP, ASIC Power Supplies Green Electronics/ Appliances Notebook Computers Typical Application Circuit Figure1 Typical Application Circuit YB1693 Rev.1.1 www.yobon.com.tw 1 YB1693 3A Synchronous Step-Down Converter Pin Configuration SOP-8(Exposed Pad) Figure 2 Pin Configuration Pin Description Table 1 Pin 1 Name BS 2 3 4 5 VIN SW GND FB 6 COMP 7 8 EN SS Description High-Side Gate Drive Boost Input. BS supplies the drive for the high-side ...