FX5545G008
Vishay
Low Profile 3mm DC/DC Buck Converter
0.8V to 4.5V*, 3A with 380W/in
3
Power Density
Efficiency up to 95%
FEATURES
•
Fully integrated DC/DC converter
•
Advanced development of FX5545G305
•
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)
•
0.8V to 4.5V* output voltage
•
Programmable PWM/PSM controls
•
Low output ripple
•
BGA construction
•
Temperature range: - 40°C to + 85°C
•
No external components required
•
Output power 10W
•
Maximum current 3A
•
Low profile
*Note: For higher putput voltage please consult factory at
FunctionPAK@Vishay.com
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 2.5V 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.
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.
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 - G008 or G018
OUTPUT VOLTAGE - Example: 1.2V should be written as 1V2 as the V indicates the decimal point or ADJ
for adjustable version - self selectable output voltage. G018ADJ is only available in the adjustable version
for Vout = 0.9V - 1.3V. For design considerations please see ANF110
PACKAGING - B1 = 10pcs in bulk; B5 = 50pcs in bulk; T1 = 13” reel; T2 = 7” reel.
For lead (Pb)-free solder please add E2 suffix.
5545
G008
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22
For technical questions, contact FunctionPAK@vishay.com
For marketing questions, contact FunctionPAK.marketing@vishay.com
Document Number: 10126
Revision: 01-Mar-05
FX5545G008
Vishay
B
C
A
DIMENSIONS
in inches [millimeters]
L
W
A
B
C
T
Ball Diameter
0.58 ± 0.01
[14.7 ± 0.25]
0.48 ± 0.01
[12.2 ± 0.25]
0.1 ± 0.01
[2.54 ± 0.25]
0.09 ± 0.01
[2.29 ± 0.25]
0.09 ± 0.01
[2.27 ± 0.25]
0.126 max
[3.2 max]
0.03 ± 0.001
[0.762 ± 0.025]
BOTTOM SIDE
20 19 18 17
16 15 14 13
12 11 10 9
8
4
7
3
6
2
5
1
W
PIN CONFIGURATION*
PIN
Marked on Upper Side
T
L
CONNECTION
SD
SYNC**
Vref***
Vin
PWM/PSM
N/C
GND
Vout
N/C
GND
*Note: Pin Description application note is available at
www.vishay.com/doc?10119
For adjustable version please refer to Self Selectable Output Voltage
application note which is available at www.vishay.com/doc?10116
**Note: if not used must be connected ti Vin.
***Note: N/C - If the output voltage is 0.9V and higher. For output
voltage of 0.8V connect Vref to MCL4448 (Vishay RF PIN Diode).
1, 2
3, 7
4, 8
5, 9
6, 10
11, 12
13, 17
14, 18
15, 19
16, 20
Pin Configuration for Vo = 0.8V
Pin Configuration for Vo = 0.9V - 4.5V
RECOMMENDED PAD PATTERN
in inches [millimeters]
A
0.1 ± 0.01
[2.54 ± 0.25]
D
0.03 ± 0.001
[0.8 ± 0.02]
F
0.02 ± 0.001
[0.5 ± 0.02]
D
A
F
1
A
TAPE AND REEL
See Tape and Reel Information - Type B
A
Document Number: 10126
Revision: 01-Mar-05
For technical questions, contact FunctionPAK@vishay.com
For marketing questions, contact FunctionPAK.marketing@vishay.com
www.vishay.com
23
FX5545G008
Vishay
STANDARD ELECTRICAL SPECIFICATIONS
PARAMETER
Input
Voltage Range
Quiescent Current
Soft Start Time
SD, PWM/PSM,SYNC
Logic High
Logic Low
Normal Mode
PSM Mode
Shutdown Mode
Shutdown Time
Insulation
Test Voltage
Resistance
Leakage Current
Output
Power
Voltage
Voltage Tolerance
UNIT
V
DC
CONDITION
MIN
2.5
PSM mode
T
SS
for Vout = 3.3V
T
SS
for Vout = 1.2V
V
H
V
L
I
DD
I
DD
I
DD
T
SS
for Vout = 3.3V
T
SS
for Vout = 1.2V
60Hz 60sec
V
ISO
= 500 V
DC
V
ISO
= 500 V
DC
2.4
0.8
750
250
1
4
0.6
750
1 x 10
11
5
10
0.8 to 4.5
For Vout = 0.9V and above (using external diode BAR065V for
Vout = 0.9V up to 1.3V) at 25°C Ambient Temp.
For Vout = 0.8V up to 1.3V using external diode MCL4448 at
25°C Ambient Temp.
DC to 20 MHz
-3
-5
80
1.4
400
F
SYNC
/F
OSC
1.2
- 40
- 55
T
j
θ
JA
150
82
1.5
+ 85
+ 125
+3
+5
0.15
200
4
2.6
TYP
MAX
6
µA
ms
V
V
µA
µA
µA
ms
V
AC
Ω
nA
W
V
DC
%
%
Temp. Coefficient
%/°C
Ripple and Noise
mVpp
General
Package Weight
gr.
Oscillator
Frequency
KHz
SYNC Range
Temperature
Operation
°C
Storage
°C
Operating Junction Temp.
°C
Thermal Impedance
°C/W
D
*
*Note: W
D
= Power Dissipated
Rise Time
Fall Time
Rise Time (PWM mode): Vin = 6V; Vout = 3.3V; lout = 3A
Fall Time (PWM mode): Vin = 6V; Vout = 3.3V; lout = 3A
Rise Time (PWM mode): Vin = 6V; Vout = 1.2V; lout = 3A
www.vishay.com
24
Fall Time (PWM mode): Vin = 6V; Vout = 1.2V; lout = 3A
Document Number: 10126
Revision: 01-Mar-05
For technical questions, contact FunctionPAK@vishay.com
For marketing questions, contact FunctionPAK.marketing@vishay.com
PCB Design
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