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43
FX5545G305
Vishay
Document Number: 10115
Revision 03-Dec-03
FEATURES
Fully integrated DC/DC converter
High efficiency over large load range
100% duty cycle
Power density - more than 380W/inch
3
1uA 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.
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.
ORDERING INFORMATION
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
Industry Smallest and Low Profile
10W 3.0A DC/DC Buck Converter
with High Output Density Power
*Note: For higher output voltage please consult factory at
FunctionPAK@Vishay.com