FX5545G201
Vishay
Industry Smallest and Low Profile
3W 1000mA DC/DC Buck Converter
with High Output Power Density
FEATURES
•
Fully integrated DC/DC converter
Available
•
High efficiency over large load range
RoHS*
•
2MHz switching frequency
COMPLIANT
•
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
•
UL recognized component E250930
** 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 - 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.
* Pb containing terminations are not RoHS compliant, exemptions may apply
Document Number: 10104
Revision: 05-Sep-06
For technical questions, contact FunctionPAK@vishay.com
For marketing questions, contact FunctionPAK.marketing@vishay.com
www.vishay.com
45
5545
G201
Legal Disclaimer Notice
Vishay
Disclaimer
All product specifications and data are subject to change without notice.
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 herein
or in any other disclosure relating to any product.
Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any
information provided herein to the maximum extent permitted by law. The product specifications do not expand or
otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed
therein, which apply to these products.
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.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless
otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such
applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting
from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding
products designed for such applications.
Product names and markings noted herein may be trademarks of their respective owners.
Document Number: 91000
Revision: 18-Jul-08
www.vishay.com
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Test/Measurement
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