FX5545G005
Vishay
Industry Smallest and Low Profile
5W 1.5A 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 100W/inch
3
•
1µA shutdown current
•
2.7V to 6V input range (1 Li+ 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
•
Output power 5W
•
Maximum current 1.5A
•
No external components needed
•
Low profile
*Note:
For higher output voltage please consult factory at
FunctionPAK@Vishay.com
The DC/DC converter is a programmable topology
synchronized Buck converter for today’s continous 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/LGA
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
•
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
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.
Document Number: 10112
Revision: 21-Jan-05
For technical questions, contact FunctionPAK@vishay.com
For marketing questions, contact FunctionPAK.marketing@vishay.com
www.vishay.com
11
5545
G005
FX5545G005
Vishay
DIMENSIONS
in inches [millimeters]
B
C
A
L
W
A
B
C
T
Ball Diameter
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]
0.12 max
[3 max]
0.03 ± 0.001
[0.762 ± 0.025]
T
L
BOTTOM SIDE
PIN CONFIGURATION*
PIN
CONNECTION
SD
SYNC**
N/C
Vin
PWM/PSM
N/C
GND
Vout
N/C
GND
1, 2
3, 7
Marked on Upper Side
20 19 18 17
16 15 14 13
12 11 10 9
8
4
7
3
6
2
5
1
4, 8
5, 9
6, 10
11, 12
*Note: Pin Description application note is available at
www.vishay.com/doc?10119
**Note: if not used must be connected to Vin.
13, 17
14, 18
15, 19
16, 20
RECOMMENDED PAD PATTERN
in inches [millimeters]
A
D
F
A
D
F
0.1 ± 0.01
[2.54 ± 0.25]
0.03 ± 0.001
[0.8 ± 0.02]
0.02 ± 0.001
[0.5 ± 0.02]
A
TAPE AND REEL
See Tape and Reel Information - Type B
www.vishay.com
12
For technical questions, contact FunctionPAK@vishay.com
For marketing questions, contact FunctionPAK.marketing@vishay.com
Document Number: 10112
Revision: 21-Jan-05
A
0.58 ± 0.01
[14.7 ± 0.25]
w
FX5545G005
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
Temp. Coefficient
Ripple and Noise
General
Package Weight
Oscillator
Frequency
SYNC Range
Temperature
Operation
Storage
Operating Junction
Temp.
Thermal Impedance
*Note:
W
D
= Power Dissipated
UNIT
V
DC
CONDITION
MIN
2.7
PSM mode
T
SS
V
H
V
L
I
DD
I
DD
I
DD
T
SS
60Hz 60sec
V
ISO
= 500 V
DC
V
ISO
= 500 V
DC
2.4
0.8
750
250
1
5
750
1 x 10
11
5
5
1.35 to 4.5
at 25 °C Ambient Temperature
DC to 20 MHz
-3
100
1.4
670
F
SYNC
/F
OSC
°C
°C
°C
°C/W
D
*
T
j
θ
JA
1.2
- 40
- 55
150
82
1.5
+ 85
+ 125
+3
0.03
200
4.3
TYP
MAX
6
µA
ms
V
V
µA
µA
µA
ms
V
AC
Ω
nA
W
V
DC
%
%/°C
mVpp
gr.
KHz
Rise Time
Fall Time
Rise Time (PWM mode): Vin = 6V; Vout = 3.3V; lout = 1.5A
Fall Time (PWM mode): Vin = 6V; Vout = 3.3V; lout = 1.5A
Document Number: 10112
Revision: 21-Jan-05
For technical questions, contact FunctionPAK@vishay.com
For marketing questions, contact FunctionPAK.marketing@vishay.com
www.vishay.com
13
FX5545G005
Vishay
PWM MODE
Vout Vs. lout*
Vin = 3.6V
3.5
3.45
3.4
3.35
3.3
3.25
3.2
3.15
3.1
3.05
3
3.5
3.45
3.4
3.35
3.3
3.25
3.2
3.15
3.1
3.05
3
3
4
5
Vout Vs. Vin*
Vout (V)
Vout (V)
Iout = 0.5A
Iout = 1.5A
0
0.5
1
1.5
2
6
lout (A)
Vin (V)
∆
Temp. Vs. lout*
Above 25°C Ambient Temperature: For Vout = 3.3V; Vin = 6V
30
25
100
90
80
70
60
50
40
30
20
10
0
Efficiency Vs. lout*
Vout = 3.3V; Vin = 3.6V
D
Temp
(°
C
)
20
15
10
5
0
0
0.5
1
1.5
2
Efficiency (%)
0
0.5
1
1.5
2
lout (A)
lout (A)
PSM MODE
Vout Vs. Vin*
lout = 0.1A
3.4
3.38
3.36
3.34
3.32
3.3
3.28
3.26
3.24
3.22
3.2
3
4
5
Vin (V)
6
7
3.4
3.38
3.36
3.34
3.32
3.3
3.28
3.26
3.24
3.22
3.2
0
0.05
0.1
0.15
Iout(A)
0.2
0.25
Vout Vs. lout*
Vin = 6V
Vout (V)
Efficiency Vs. lout*
100
90
80
70
60
50
40
30
20
10
0
0
0.05
0.1
0.15
Iout (A)
Vin = 4V
Vin = 6V
Efficiency (%)
Vout (V)
0.2
0.25
*Note: Measurements were taken with Power supply: ZUP 20-40 from Nemic Lambda; Electronic load: 6063B from Agilent; Multimeter: Fluke 45
from Fluke and 34401 digital multimeter from Agilent; Scope: Infiniium 54815A from Agilent.
www.vishay.com
14
For technical questions, contact FunctionPAK@vishay.com
For marketing questions, contact FunctionPAK.marketing@vishay.com
Document Number: 10112
Revision: 21-Jan-05
