FX5545G402
Vishay
Industry Smallest and Low Profile
5W 1A DC/DC Boost Converter
with High Output Density Power
FEATURES
• Fully integrated DC/DC converter
• High efficiency over large load range
• 2MHz switching frequency
• 100% duty cycle
• Power density - more than 150W/inch
3
• 1uA shutdown current
• 2.5V to 6V input range (1Li+ and 3-cell NiCd or NiMH cells)
• 3.3V to 6V 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 1000mA
• Low profile
The DC/DC converter provides fully integrated synchronous
boost converter solution for the latest one-cell lithium ion
cellular phones. Its input voltage is between 2.5V to 6V, capable
of delivering 1000mA of output current at 3.3V to 6V.
The DC/DC converter combines the 2MHz-switching
controller with fully integrated passive components needed
to deliver the smallest and most efficient converter available
today. The high switching frequency minimizes the output
capacitance with peak to peak output ripple as low as 20mV.
The DC/DC converter delivers efficiency up to 95%.
The programmable pulse-skipping mode (PSM) maintains
this high efficiency even during the standby and idle modes
to increase overall battery life and talktime. In order to extract
the last ounce of power from the battery, the DC/DC converter
is designed with 100% duty cycle control for this mode. This
function enables the DC/DC converter to operate like a
saturated linear regulator delivering the highest potential
output voltage for longer talk time.
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
Battery back-up supplies
Cameras
Routers
Fiber optics
LANS
Image processing
ORDERING INFORMATION
FX
FUNCTION
SIZE
CIRCUIT IDENTIFIER
OUTPUT VOLTAGE-Example: 5.0V should be written as 5V0 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.
5545
G402
Document Number: 10110
Revision 27-Nov-02
For technical questions, contact FunctionPAK@vishay.com
For marketing questions, contact FunctionPAK.marketing@vishay.com
www.vishay.com
17
FX5545G402
Vishay
DIMENSIONS
in inches [millimeters]
B
C
A
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]
0.09
±
0.01
[2.29
±
0.25]
0.09
±
0.01
[2.27
±
0.25]
0.12 max
[3 max]
W
PIN CONFIGURATION (Bottom Side)*
PIN
1
2, 6
3, 7
4, 8
5, 9
10 - 12
13, 17
14 - 16
18
19, 20
CONNECTION
N/C
SD
PWM/PSM
SYNC
Vout
N/C
GND
N/C
N/C
Vin
BOTTOM SIDE
20 19 18 17
16 15 14 13
12 11 10
8
4
7
3
6
2
9
5
1
Marked on Upper Side
*Note:
Pin Description application note is available on page 32.
T
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]
A
L
F
A
TAPE AND REEL
See Tape and Reel Information - Type B
www.vishay.com
18
For technical questions, contact FunctionPAK@vishay.com
For marketing questions, contact FunctionPAK.marketing@vishay.com
Document Number: 10110
Revision 27-Nov-02
A
D
FX5545G402
Vishay
STANDARD ELECTRICAL SPECIFICATIONS
PARAMETER
Input
Voltage Range
Insulation
Test Voltage
Resistance
Leakage Current
Output
Power
Voltage
Voltage Tolerance
Temp. Coefficient
Ripple and Noise
General
Switching Frequency
Package Weight
Temperature
Operation
Storage
UNIT
V
DC
V
AC
Ω
nA
W
V
DC
%
%/°C
mVpp
MHz
gr.
°C
°C
- 40
- 55
60Hz 60sec
V
ISO
= 500V
DC
V
ISO
= 500V
DC
CONDITION
MIN
2.5
750
1 x 10
11
5
5
3.3 to 6
at 25°C Ambient Temperature
DC to 20MHz
-5
50
2
1.5
+ 85
+ 125
+5
0.03
TYP
MAX
6
Vout Vs. Iout
Vin = 3.5V; Vout = 5.0V
5.5
5.4
5.3
5.2
6
5.8
5.6
5.4
5.2
Vout Vs. Vin
Iout = 1000mA
Vout (V)
Vout (V)
5.1
5
4.9
4.8
4.7
4.6
4.5
0
0.2
0.4
0.6
0.8
1
1.2
5
4.8
4.6
4.4
4.2
4
2
3
4
5
6
Iout (A)
Vin (V)
∆
Temp Vs. Iout
Above 25°C Ambient Temperature
60
50
Efficiency Vs. Iout
Vin = 3.5; Vout = 5.0V
100
95
90
Efficiency (%)
∆
Temp (
°
C)
40
85
80
75
70
65
60
55
Vin = 2.7V
30
20
10
0
0
0.2
0.4
0.6
0.8
1
1.2
Vin = 3.5V
50
0
0.2
0.4
0.6
0.8
1
1.2
Iout (A)
Iout (A)
Document Number: 10110
Revision 27-Nov-02
For technical questions, contact FunctionPAK@vishay.com
For marketing questions, contact FunctionPAK.marketing@vishay.com
www.vishay.com
19
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