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Fiti - 340KHz Synchronous Step-Down DC/DC Converter

Numéro de référence FR9884
Description 340KHz Synchronous Step-Down DC/DC Converter
Fabricant Fiti 
Logo Fiti 





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FR9884 fiche technique
fitipower integrated technology lnc.
FR9884
18V, 3A, 340KHz Synchronous Step-Do8w5nT
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)
BS
VIN
SW
GND
1
2
3
4
8 SS
7 EN
6 COMP
5 FB
Figure 1. Pin Assignment of FR9884
Ordering Information
FR9884□□□
TR: Tape / Reel
G: Green
Package Type
SP: SOP-8 (Exposed Pad)
FR9884-1.7-DEC-2011
1

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