FX5545G201
Vishay
Industry Smallest and Low Profile
3W 1000mA DC/DC Buck Converter
with High Output Power Density
FEATURES
•
Fully integrated DC/DC converter
•
High efficiency over large load range
•
2MHz switching frequency
•
100% duty cycle
•
Power density - more than 100W/inch
3
•
1µA shutdown current
•
2.7V to 6V input range (1Li+ 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
•
No external components needed
•
Output power 3W
•
Maximum current 1.0A
•
Low profile
* Note:
For higher output voltage please consult factory at
FunctionPAK@Vishay.com
The DC/DC converter provides fully integrated synchronous
buck converter solution for the latest one-cell lithium ion
cellular phones. Its input voltage is between 2.7V to 6V,
capable of delivering up to 1000mA of output current at 1.5V
to 3.6V.
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 25mV.
The DC/DC converter delivers efficiency up to 95%.
The programmable pulse-skipping mode (PSM) maintains
this 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
•
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: 10104
Revision: 21-Jan-05
For technical questions, contact FunctionPAK@vishay.com
For marketing questions, contact FunctionPAK.marketing@vishay.com
www.vishay.com
45
5545
G201
FX5545G201
Vishay
DIMENSIONS
in inches [millimeters]
A
C
A
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]
0.12 max
[3 max]
0.03 ± 0.001
[0.762 ± 0.025]
T
W
BOTTOM SIDE
PIN CONFIGURATION*
PIN
1, 2
CONNECTION
SD
SYNC
N/C
Vin
PWM/PSM
N/C
GND
Vout
N/C
GND
20 19 18 17
16 15 14 13
12 11 10 9
8
4
7
3
6
2
5
1
3, 7
Marked on Upper Side
4, 8
5, 9
6, 10
11, 12
*Note: Pin Description application note is available at
www.vishay.com/doc?10119
13, 17
14, 18
15, 19
16, 20
RECOMMENDED PAD PATTERN
in inches [millimeters]
A
A
D
F
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
46
For technical questions, contact FunctionPAK@vishay.com
For marketing questions, contact FunctionPAK.marketing@vishay.com
Document Number: 10104
Revision: 21-Jan-05
B
FX5545G201
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
°C
°C
°C
°C/W
D
*
T
j
θ
JA
- 40
- 55
150
82
+ 85
+ 125
MHz
F
SYNC
/F
OSC
1.2
2
1.5
gr.
1.3
W
V
DC
%
%/°C
mVpp
DC to 20 MHz
35
at 25 °C Ambient Temperature
-3
3
1.35 to 4.5
3
0.03
V
AC
Ω
nA
60Hz 60sec
V
ISO
= 500 V
DC
V
ISO
= 500 V
DC
750
1 x 10
11
5
V
V
V
H
V
L
I
DD
I
DD
I
DD
T
SS
9
2.4
0.8
750
250
1
V
DC
2.7
PSM mode
T
SS
200
5
6
UNIT
CONDITION
MIN
TYP
MAX
µA
ms
µA
µA
µA
ms
Rise Time
Fall Time
Rise Time (PWM mode): Vin = 6V; Vout = 3.3V; lout = 1A
Document Number: 10104
Revision: 21-Jan-05
Fall Time (PWM mode): Vin = 6V; Vout = 3.3V; lout = 1A
www.vishay.com
47
For technical questions, contact FunctionPAK@vishay.com
For marketing questions, contact FunctionPAK.marketing@vishay.com
FX5545G201
Vishay
PWM MODE
Vout Vs. lout*
Vin = 3.6V
3.5
3.45
3.4
3.5
3.45
3.4
Vout Vs. Vin*
lout = 600mA
Vout (V)
3.35
3.3
3.25
3.2
3.15
3.1
0
0.2
0.4
0.6
0.8
1
1.2
Vout (V)
3.35
3.3
3.25
3.2
3.15
3.1
3
3.5
4
4.5
5
5.5
6
6.5
lout (A)
Vin (V)
∆
Temp. Vs. lout*
Above 25°C Ambient Temperature
14
12
10
8
6
4
2
0
0
0.2
0.4
0.6
0.8
1
1.2
Vin = 3.6V
100
95
90
85
80
75
70
65
60
55
50
Efficiency Vs. lout*
Vin = 3.6V; Vin = 3.3V
D
Te m p ( ° C )
Efficiency (%)
0
0.2
0.4
0.6
0.8
1
1.2
lout (A)
lout (A)
PSM MODE
Vout Vs. Vin*
lout = 0.05A
3.5
3.45
Vout (V)
3.4
3.35
3.3
3.25
3.2
3
4
5
Vin (V)
6
7
3.5
3.45
Vout Vs. lout*
Vin = 6V
Vout (V)
3.4
3.35
3.3
3.25
3.2
0
0.05
0.1
0.15
Iout (A)
0.2
0.25
Efficiency Vs. lout*
100
90
80
70
60
50
40
30
20
10
0
Vin = 4V
Vin = 6V
Efficiency (%)
0
0.05
0.1
Iout (A)
0.15
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
48
For technical questions, contact FunctionPAK@vishay.com
For marketing questions, contact FunctionPAK.marketing@vishay.com
Document Number: 10104
Revision: 21-Jan-05
