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Document Number: 10115
For technical questions, contact FunctionPAK@vishay.com
For marketing questions, contact FunctionPAK.marketing@vishay.com
www.vishay.com
Revision: 21-Jan-05
65
FX5545G305
Vishay
Industry Smallest and Low Profile
10W 3.0A DC/DC Buck Converter
with High Output Power Density
FEATURES
Fully integrated DC/DC converter
High efficiency over large load range
100% duty cycle
Power density - more than 380W/inch3
1A shutdown current
2.7V to 6V input range (1Li+ and 3-cell NiCd or NiMH cells)
1.35V to 4.5V* output voltage
Programmable PWM/PSM controls
Low output ripple
BGA/LGA construction
Temperature range: - 40°C to + 85°C
No external components needed
Output power 10W
Maximum current 3.0A
Low profile
The
DC/DC
converter
is
a
programmable
topology
synchronized
Buck
converter
for
today’s
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’s. For ultra-high efficiency, converters are
designed to operate in synchronous 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°C to + 85°C.
*Note: For higher output voltage please consult factory at
FunctionPAK@Vishay.com
APPLICATION
Point of Load (POL) applications such as drivers for
FPGA’s, microprocessors, DSP’s amplifiers, etc.
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
5545
G305
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” reel; T2 = 7” reel.
For lead (Pb)-free solder please add E2 suffix.