Description   The FR9886 is a synchronous step-down DC/DC converter that provides wide 4.5V to 23V input voltage range and 2.5A continuous load current capability.   The FR9886 fault protection includes cycle-by-cycle current limit, UVLO, output overvoltage protection and thermal shutdown. The adjustable soft-start function prevents inrush current at turn-on. This device uses current mode control scheme which provides fast transient response. Internal compensation function reduces external compensation components and simplifies the design process. In shutdown mode, the supply current is less than 1μA.   The FR9886 is available in a SOP-8/SOP-8 exposed pad package, and provides good thermal conductance.

Features High Efficiency up to 96% Low Rds(on) Integrated Power MOSFET Internal Compensation Function Wide Input Voltage Range: 4.5V to 23V Adjustable Output Voltage from 0.925V to 20V 2.5A Output Current Fixed 340KHz Switching Frequency Current Mode Operation Adjustable Soft-Start Cycle-by-Cycle Current Limit Over-Temperature Protection with Auto Recovery Output Overvoltage Protection Under Voltage Lockout <1μA Shutdown Current SOP-8 and SOP-8 Exposed Pad Packages

Applications STB (Set-Top-Box) LCD Display, TV Distributed Power System Networking, XDSL Modem