FX5545G0053V3 [ETC]
Analog IC ; 模拟IC\n
ETC 
FX5545G005
Vishay
Industry Smallest and Low Profile
5W 1.5A DC/DC Buck Converter
with High Output Density Power
FEATURES
• Fully integrated DC/DC converter
• High efficiency over large load range
• 100% duty cycle
• Power density - more than 100W/inch3
• 1uA shutdown current
• 2.7V to 6V input range (1Li+ and 3-cell NiCd or NiMH cells)
• 1.8V to 3.3V 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 5W
• Maximum current 1.5A
• 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
sychronous rectified PWM mode under full load while
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
• Portable computers
transforming into externally controlled pulse-skipping mode • Battery back-up supplies
• Cameras
(PSM) under light load.
ORDERING INFORMATION
FX
5545
G005
FUNCTION
SIZE
SERIAL NUMBER
OUTPUT VOLTAGE-Example: 2.7V should be written as 2V7 as the V indicates the decimal point.
For technical questions, contact FunctionPAK@vishay.com
For marketing questions, contact FunctionPAK.marketing@vishay.com
Document Number: 10112
Revision 25-Feb-02
www.vishay.com
1
FX5545G005
Vishay
DIMENSIONS in inches [millimeters]
W
L
W
A
B
C
T
0.58 ± 0.01
[14.7 ± 0.25]
0.48 ± 0.01
[12.2 ± 0.25]
0.1 ± 0.01
[2.54 ± 0.25]
C
A
0.09 ± 0.01
[2.29 ± 0.25]
0.09 ± 0.01
[2.27 ± 0.25]
0.12 max
[3 max]
PIN CONFIGURATION
PIN
1, 2
CONNECTION
SD
BOTTOM SIDE
3, 7
SYNC
N/C
4, 8
20 19 18 17
16 15 14 13
5, 9
Vin
Marked on Upper Side
12 11 10
9
5
6, 10
11, 12
13, 17
14, 18
15, 19
16, 20
PWM/PSM
N/C
8
4
7
3
6
2
1
GND
Vout
N/C
GND
RECOMMENDED PAD PATTERN in inches [millimeters]
D
F
A
D
F
0.1 ± 0.01
0.03 ± 0.001
[0.8 ± 0.02]
0.02 ± 0.001
[0.5 ± 0.02]
[2.54 ± 0.25]
A
For technical questions, contact FunctionPAK@vishay.com
For marketing questions, contact FunctionPAK.marketing@vishay.com
www.vishay.com
2
Document Number: 10112
Revision 25-Feb-02
FX5545G005
Vishay
STANDARD ELECTRICAL SPECIFICATIONS
PARAMETER
UNIT
CONDITION
MIN
TYP
MAX
Input
Voltage Range
VDC
2.7
6
Insulation
Test Voltage
Resistance
VAC
Ω
60Hz 60sec
750
1 x 1011
V
ISO = 500VDC
Leakage Current
nA
VISO = 500VDC
5
Output
Power
W
5
Voltage
VDC
1.8 to 3.3
Temp. Coefficient
Ripple and Noise
%/°C
mVpp
0.03
1.5
DC to 20MHz
100
General
Package Weight
gr.
Temperature
Operation
Storage
°C
°C
- 40
- 55
+ 85
+ 125
Vout Vs. Iout
Vout Vs. Vin
Vin = 3.6V
3.5
3.5
3.45
3.4
3.45
3.4
3.35
3.3
3.35
3.3
Iout = 0.5A
Iout = 1.5A
3.25
3.25
3.2
3.15
3.1
3.2
3.15
3.1
3.05
3.05
3
3
0
0.5
1
1.5
2
3
4
5
6
Vin (V)
Iout (A)
∆ Temp. Vs. Iout
Efficiency Vs. Iout
Vout = 3.3V; Vin = 3.6V
Above 25°C Ambient Temperature; For Vout = 3.3V; Vin = 6V
30
100
90
80
70
60
50
25
20
15
40
30
20
10
0
10
5
0
0
0.5
1
1.5
2
0
0.5
1
1.5
2
Iout (A)
Iout (A)
For technical questions, contact FunctionPAK@vishay.com
For marketing questions, contact FunctionPAK.marketing@vishay.com
Document Number: 10112
Revision 25-Feb-02
www.vishay.com
3
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