For technical questions, contact FunctionPAK@vishay.com
For marketing questions, contact FunctionPAK.marketing@vishay.com www.vishay.com
15
FX5545 GXXX XXX PI
Vishay
Document Number: 10130
Revision 22-Sep-03
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/inch3
•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
•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
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
FX 5545 G PI
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
ORDERING INFORMATION
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
Fully Integrated DC/DC Converter 0.9V to 6V, 3A with
380W/in3 Density Power Efficiency up to 95% or
Simplified LAB assembly configuration for all models
For technical questions, contact FunctionPAK@vishay.com
For marketing questions, contact FunctionPAK.marketing@vishay.com Document Number: 10130
Revision 22-Sep-03
www.vishay.com
16
FX5545 GXXX XXX PI
Vishay
PIN DESCRIPTION
PIN DESCRIPTION
SD Logic low on SD pin shuts down the FunctionPAK completely and decreases current consumption to less than 1µA.
PWM/PSM Logic high =PWM mode, logic low =PSM mode. In PSM mode synchronous rectification is disabled.
SYNC 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 Input supply voltage
Vout Output voltage
GND Ground
Rext.
Included inside the package for all fixed output voltage converters. To be added externally for all self-selected output voltages.
SD
SYNC
Rext
Vin
DISABLE
ENABLE CONVERTER
Load
PWM
Vout
PSM PWM/PSM
Vin
Rext
EXTERNAL
CLOCK GND
PIN DESCRIPTION
1
2
3
4
5
6
7
Vout
Vin
GND
Rext
SYNC
SD
PWM
GND
8
PIN No: Description
14
5
8
Use Standard Strip 0.1" (2.54 mm) Centers,
Double Row
All Positions Filled
0.69 in
0.98 in
0.23in
0.31 in
(25.0 mm)
(5.84 mm)
(17.5 mm)
(7.9 mm)
0.1 in
(2.54 mm)
0.1 in
(2.54 mm)
PIn 1
MODEL CIRCUIT TYPE DESCRIPTION INPUT VOLTS OUTPUT VOLTS SPECIFICATION
IDENTIFIER AT AMPS AT PAGE
FX5545G008XVXPI G008 BUCK 3.6W, 3A 2.5 – 6.0 0.9-1.2 at 3.0max 19
FX5545G001XVXPI G001 BUCK 1.5w, 0.6A 2.5 – 6.0 1.5-3.6 at 0.6max 5
FX5545G201XVXPI G201 BUCK 3W, 1.0A 2.5 – 6.0 1.5-3.6 at 1.0max 31
FX5545G005XVXPI G005 BUCK 5W, 1.5A 2.5 – 6.0 1.5-3.6 at 1.5max 11
FX5545G105XVXPI G105 BUCK 6.5W, 2.0A 2.5 – 6.0 1.5-3.6 at 2.0max 23
FX5545G205XVXPI G205 BUCK 8W, 2.5A 2.5 – 6.0 1.5-3.6 at 2.5max 39
FX5545G305XVXPI G305 BUCK 10W, 3.0A 2.5 – 6.0 1.5-3.6 at 3.0max 43
FX5545G006XVXPI G006 BOOST 7.5w, 1.5A 2.7 – 6.0 3.3-6.0 at 1.5max 15
FX5545G106XVXPI G106 BOOST 10W, 2.0A 2.7 – 6.0 3.3-6.0 at 2.0max 27
DESIGN REFERENCE GUIDE
