FX5545G205
Vishay
Industry Smallest and Low Profile
8W 2.5A DC/DC Buck Converter
with High Output Density Power
FEATURES
鈥?Fully integrated DC/DC converter
鈥?High efficiency over large load range
鈥?100% duty cycle
鈥?Power density - more than 300W/inch
3
鈥?1uA shutdown current
鈥?2.7V to 6V input range (1Li+ and 3-cell NiCd or NiMH cells)
鈥?1.8V to 3.3V output voltage
鈥?Programmable PWM/PSM controls
鈥?Low output ripple
鈥?BGA/LGA construction
鈥?Temperature range: - 40擄C to + 85擄C
鈥?No external components needed
鈥?Output power 8W
鈥?Maximum current 2.5A
鈥?Low profile
The DC/DC converter is a programmable topology
synchronized Buck converter for today鈥檚 continuous changing
portable electronic market. The DC/DC converter provides
flexibility of utilizing various battery configurations and
chemistries such as NiCd, NiMH, or Li+ with an input voltage
range of 2.7V to 6V. An additional flexibility is provided with
topology programmability to power multiple loads such as
power amplifiers, microcontrollers, or baseband logic IC鈥檚.
For ultra-high efficiency, converters are designed to operate
in sychronous rectified PWM mode under full load while
transforming into externally controlled pulse-skipping mode
(PSM) under light load.
The DC/DC converter is available in 20-ports BGA package.
In order to satisfy the stringent ambient temperature
requirements, the DC/DC converter is designed to handle
the industrial temperature range of - 40擄C to + 85擄C.
APPLICATION
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Cordless phones, PDAs and others
Supply voltage source for low-voltage chip sets
Portable computers
Battery back-up supplies
Cameras
Routers
Fiber optics
LANS
Image processing
ORDERING INFORMATION
FX
FUNCTION
SIZE
CIRCUIT IDENTIFIER
OUTPUT VOLTAGE-Example: 2.7V should be written as 2V7 as the V indicates the decimal point,
or ADJ for adjustable version - self selectable output voltage.
PACKAGING-B1 = 10pcs in bulk; B5 = 50pcs in bulk; T1 = 13鈥?reel; T2 = 7鈥?reel.
5545
G205
www.vishay.com
26
For technical questions, contact FunctionPAK@vishay.com
For marketing questions, contact FunctionPAK.marketing@vishay.com
Document Number: 10113
Revision 27-Nov-02
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