End of Life, for last available purchase date
please see www.vishay.com/integrated-modules
FX5545G205
Vishay
Industry Smallest and Low Profile
8W 2.5A DC/DC Buck Converter
with High Output Power Density
FEATURES
•
Fully integrated DC/DC converter
•
High efficiency over large load range
•
100% duty cycle
•
•
•
•
•
•
•
•
•
300W/inch
3
Available
RoHS*
COMPLIANT
Power density - more than
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 8W
•
Maximum current 2.5A
•
Low profile
•
UL recognized component E250930
•
** 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 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 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
•
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 - 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. Leave blank for regular SnPb.
5545
G205
* Pb containing terminations are not RoHS compliant, exemptions may apply
Document Number:10113
Revision: 22-Apr-09
For technical questions, contact:
FunctionPAK@vishay.com
For marketing questions, contact:
FunctionPAK.marketing@vishay.com
www.vishay.com
1
FX5545G205
Vishay
End of Life, for last available purchase date
please see www.vishay.com/integrated-modules
DIMENSIONS
in inches [millimeters]
A
L
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]
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
**Note: if not used must be connected to Vin.
13, 17
14, 18
15, 19
16, 20
A
RECOMMENDED PAD PATTERN
in inches [millimeters]
A
D
F
T
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
2
For technical questions, contact:
FunctionPAK@vishay.com
For marketing questions, contact:
FunctionPAK.marketing@vishay.com
Document Number:10113
Revision: 22-Apr-09
B
End of Life, for last available purchase date
please see www.vishay.com/integrated-modules
FX5545G205
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
1.
UNIT
CONDITION
MIN
TYP
MAX
V
DC
µA
ms
V
V
µA
µA
µA
ms
V
AC
Ω
nA
W
V
DC
%
%/°C
mVpp
mVpp
gr.
KHz
F
SYNC
/F
OSC
°C
°C
°C
°C/W
D
*
T
j
θ
JA
DC to 20 MHz
with 10µF output capacitor
at 25 °C Ambient Temperature
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
2.7
200
3.5
2.4
6
0.8
750
250
1
1
750
1 x 10
11
5
8
1.35 to 4.5
-3
130
90
1.4
400
1.2
- 40
- 55
150
82
1.5
+ 85
+ 125
+3
0.03
Rise Time
Fall Time
Rise Time (PWM mode): Vin = 6V; Vout = 3.3V; lout = 2.5A
Document Number:10113
Revision: 22-Apr-09
Fall Time (PWM mode): Vin = 6V; Vout = 3.3V; lout = 2.5A
www.vishay.com
3
For technical questions, contact:
FunctionPAK@vishay.com
For marketing questions, contact:
FunctionPAK.marketing@vishay.com
FX5545G205
Vishay
End of Life, for last available purchase date
please see www.vishay.com/integrated-modules
PWM MODE
Vout Vs. lout*
Vin = 3.6V; Vout = 2.5V
2.6
2.55
2.6
2.55
Iout = 0.5A
Iout = 1.5A
Iout = 2.5A
Vout Vs. Vin*
Vout (V)
2.45
2.4
2.35
2.3
0
0.5
1
1.5
2
2.5
3
Vout (V)
2.5
2.5
2.45
2.4
2.35
2.3
0
1
2
3
4
5
6
7
lout (A)
Vin (V)
Δ
Temp. Vs. lout*
Above 25°C Ambient Temperature; For Vin = 6V
60
50
100
95
90
85
80
75
70
65
60
55
50
Efficiency Vs. lout*
Vin = 3.6V; Vout = 2.5V
D
Temp (°C)
30
20
10
0
0
0.5
1
1.5
2
2.5
3
Efficiency (%)
40
0
0.5
1
1.5
2
2.5
3
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
Iout (A)
0.15
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
Vin = 4V
Vin = 6V
Efficiency (%)
0
0.05
0.1
Iout (A)
Vout (V)
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
4
For technical questions, contact:
FunctionPAK@vishay.com
For marketing questions, contact:
FunctionPAK.marketing@vishay.com
Document Number:10113
Revision: 22-Apr-09
Legal Disclaimer Notice
www.vishay.com
Vishay
Disclaimer
ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE
RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE.
Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively,
“Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other
disclosure relating to any product.
Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or
the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all
liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special,
consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular
purpose, non-infringement and merchantability.
Statements regarding the suitability of products for certain types of applications are based on Vishay’s knowledge of typical
requirements that are often placed on Vishay products in generic applications. Such statements are not binding statements
about the suitability of products for a particular application. It is the customer’s responsibility to validate that a particular
product with the properties described in the product specification is suitable for use in a particular application. Parameters
provided in datasheets and/or specifications may vary in different applications and performance may vary over time. All
operating parameters, including typical parameters, must be validated for each customer application by the customer’s
technical experts. Product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase,
including but not limited to the warranty expressed therein.
Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining
applications or for any other application in which the failure of the Vishay product could result in personal injury or death.
Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk and agree
to fully indemnify and hold Vishay and its distributors harmless from and against any and all claims, liabilities, expenses and
damages arising or resulting in connection with such use or sale, including attorneys fees, even if such claim alleges that Vishay
or its distributor was negligent regarding the design or manufacture of the part. Please contact authorized Vishay personnel to
obtain written terms and conditions regarding products designed for such applications.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by
any conduct of Vishay. Product names and markings noted herein may be trademarks of their respective owners.
Material Category Policy
Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as RoHS-Compliant fulfill the
definitions and restrictions defined under Directive 2011/65/EU of The European Parliament and of the Council
of June 8, 2011 on the restriction of the use of certain hazardous substances in electrical and electronic equipment
(EEE) - recast, unless otherwise specified as non-compliant.
Please note that some Vishay documentation may still make reference to RoHS Directive 2002/95/EC. We confirm that
all the products identified as being compliant to Directive 2002/95/EC conform to Directive 2011/65/EU.
Revision: 12-Mar-12
1
Document Number: 91000
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
