FX5545 GXXX XXX PI
Vishay
Fully Integrated DC/DC Converter 0.9V to 6V, 3A with
380W/in
3
Density Power Efficiency up to 95% or
Simplified LAB assembly configuration for all models
FEATURES
• Specially designed for prototyping in LABs with limited
assembly equipment.
• Fully integrated DC/DC converter
• No external components required
• Buck and Boost configurations
• High efficiency over large load range
• 100% duty cycle
• Power density - more than 380W/inch
3
• 1µA shutdown current
• 2.5V to 6V input range (1Li+ and 3-cell NiCd or NiMH cells)
• 0.9V to 6V output voltage
• Programmable PWM/PSM controls
• Low output ripple
The DC/DC converter is a programmable topology
synchronized Buck or Boost converter for today’s continuous
changing electronic market. The DC/DC converter provides
flexibility of utilizing various battery configurations and
chemistries such as NiCd, NiMH, or Li+ with input voltage
range of 2.5V 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
for production. Convenient 8-pin plug-in modules are
available for prototyping. 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, with no cooling or derating
• Standard socket construction or plug-in for prototype
(use BGA for production)
• Temperature range: - 40°C to + 85°C
• Output power 10W
• Maximum continuous current 3A
APPLICATION
• Cordless phones, PDAs and others
• Supply voltage source for low-voltage chip sets
• Point of Load (POL) applications such as drivers for
FPGA’s, microprocessors, DSP’s, amplifiers, etc.
• Portable computers
• Battery back-up supplies
• Cameras
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.
PLUG-IN VERSION
5545
G
PI
Document Number: 10130
Revision 22-Sep-03
For technical questions, contact FunctionPAK@vishay.com
For marketing questions, contact FunctionPAK.marketing@vishay.com
www.vishay.com
15
FX5545 GXXX XXX PI
Vishay
PIN DESCRIPTION
0.69 in
(17.5 mm)
0.98 in
(25.0 mm)
0.1 in
(2.54 mm)
Vin
0.23in
(5.84 mm)
Vout
0.31 in
(7.9 mm)
ENABLE CONVERTER
SD
DISABLE
PWM
PWM/PSM
Rext
0.1 in
(2.54 mm)
PIn 1
Vin
PSM
SYNC
EXTERNAL
CLOCK
GND
Rext
Load
PIN No:
1
2
3
4
5
6
7
8
Use Standard Strip 0.1" (2.54 mm) Centers,
Double Row
All Positions Filled
1
Description
Vout
GND
Vin
PWM
SD
SYNC
GND
Rext
4
8
5
PIN DESCRIPTION
PIN
SD
PWM/PSM
SYNC
DESCRIPTION
Logic low on SD pin shuts down the FunctionPAK completely and decreases current consumption to less than 1µA.
Logic high =PWM mode, logic low =PSM mode. In PSM mode synchronous rectification is disabled.
Externally controlled synchronization signal. Logic high to low transition forces the clock synchronization.
If not used the pin must be connected to Vin or logic high.
Vin
Vout
GND
Rext.
Input supply voltage
Output voltage
Ground
Included inside the package for all fixed output voltage converters. To be added externally for all self-selected output voltages.
DESIGN REFERENCE GUIDE
MODEL
FX5545G008XVXPI
FX5545G001XVXPI
FX5545G201XVXPI
FX5545G005XVXPI
FX5545G105XVXPI
FX5545G205XVXPI
FX5545G305XVXPI
FX5545G006XVXPI
FX5545G106XVXPI
www.vishay.com
16
CIRCUIT
IDENTIFIER
G008
G001
G201
G005
G105
G205
G305
G006
G106
TYPE
BUCK
BUCK
BUCK
BUCK
BUCK
BUCK
BUCK
BOOST
BOOST
DESCRIPTION
3.6W, 3A
1.5w, 0.6A
3W, 1.0A
5W, 1.5A
6.5W, 2.0A
8W, 2.5A
10W, 3.0A
7.5w, 1.5A
10W, 2.0A
INPUT VOLTS
2.5 – 6.0
2.5 – 6.0
2.5 – 6.0
2.5 – 6.0
2.5 – 6.0
2.5 – 6.0
2.5 – 6.0
2.7 – 6.0
2.7 – 6.0
OUTPUT VOLTS
AT AMPS
0.9-1.2 at 3.0max
1.5-3.6 at 0.6max
1.5-3.6 at 1.0max
1.5-3.6 at 1.5max
1.5-3.6 at 2.0max
1.5-3.6 at 2.5max
1.5-3.6 at 3.0max
3.3-6.0 at 1.5max
3.3-6.0 at 2.0max
SPECIFICATION
AT PAGE
19
5
31
11
23
39
43
15
27
Document Number: 10130
Revision 22-Sep-03
For technical questions, contact FunctionPAK@vishay.com
For marketing questions, contact FunctionPAK.marketing@vishay.com
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