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