FR9884

fitipower integrated technology lnc. FR9884 85T 18V, 3A, 340KHz Synchronous Step-Down DC/DC Converter Description The FR9884 is a synchronous step-down DC/DC converter that provides wide 4.5V to 18V input voltage range and 3A continuous load current capability. Fault protection includes cycle-by-cycle current limit, input UVLO, output over voltage protection and thermal shutdown. Besides, adjustable soft-start function prevents inrush current at turn-on. This device uses current mode control scheme that provides fast transient response. In shutdown mode, the supply current is about 10μA. The FR9884 is available in an 8-pin SOIC package, which provides a very compact system solution and good thermal conductance. Features ● Wide Input Voltage from 4.5V to 18V ● 3A Output Current ● Adjustable Output Voltage from 0.925V to 14V ● Low Rds(on) Integrated Power MOSFET ● High Efficiency up to 93% ● Fixed 340KHz Switching Frequency ● Current Mode Operation ● Adjustable Soft-Start ● Cycle-by-Cycle Current Limit ● Input Under Voltage Lockout ● Over-Temperature Protection With Auto Recovery ● 10μA Shutdown Current ● Thermal Enhanced SOP-8 (Exposed Pad) Package ● RoHS Compliant Applications ● Set-Top-Box ● DVD,LCD Display ● OLPC, Netbook ● Distributed Power System ● Datacom, XDSL Pin Assignments SP Package (SOP-8 Exposed Pad) Ordering Information FR9884□□□ TR: Tape / Reel BS VIN SW GND 1 2 3 4 8 7 6 5 SS EN COMP FB G: Green Package Type SP: SOP-8 (Exposed Pad) Figure 1. Pin Ass...