YB1692

YB1692 2A Synchronous Step-Down Converter Description The YB1692 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 18V. 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 „ „ „ „ „ „ „ „ „ „ „ 2A Output Current Wide 4.75V to 18V Operating Input Range Integrated 130mΩ Power MOSFET Switches Output Adjustable from 0.923V to 15V Up to 93% Efficiency Programmable Soft-Start Stable with Low ESR Ceramic Output Capaci- tors Fixed 340KHz 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 YB1692 Rev.1.0 www.yobon.com.tw 1 YB1692 2A Synchronous Step-Down Converter Pin Configuration SOP-8 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 N-Channel MOSFET...