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