To learn more about ON Semiconductor, please visit our website at
www.onsemi.com
Please note: As part of the Fairchild Semiconductor integration, some of the Fairchild orderable part numbers
will need to change in order to meet ON Semiconductor’s system requirements. Since the ON Semiconductor
product management systems do not have the ability to manage part nomenclature that utilizes an underscore
(_), the underscore (_) in the Fairchild part numbers will be changed to a dash (-). This document may contain
device numbers with an underscore (_). Please check the ON Semiconductor website to verify the updated
device numbers. The most current and up-to-date ordering information can be found at
www.onsemi.com.
Please
email any questions regarding the system integration to
Fairchild_questions@onsemi.com.
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Semiconductor data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s
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FDMF6704V - XS
TM
DrMOS with Internal 5V Regulator
August 2009
FDMF6704V - XS
TM
DrMOS
The Xtra Small, High Performance, High Frequency DrMOS Module with LDO
Benefits
General Description
Single 12 V power supply operation.
Ultra compact size - 6 mm x 6 mm MLP, 44 % space
saving compared to conventional MLP 8 mm x 8 mm
DrMOS packages.
Ultra compact thermally enhanced 6 mm x 6 mm MLP
package 84 % smaller than conventional discrete solutions.
Fully optimized system efficiency.
Clean voltage waveforms with reduced ringing.
High frequency operation.
Compatible with a wide variety of PWM controllers in the
market.
Single input voltage operation.
tm
Features
Internal 12 V to 5 V regulator.
Synchronous driver plus FET multichip module.
High current handling of 35 A.
Over 93 % peak efficiency.
Tri-State PWM input.
Fairchild's PowerTrench
®
5 technology MOSFETs for clean
voltage waveforms and reduced ringing.
Optimized for high switching frequencies of up to 1 MHz.
Skip mode SMOD [low side gate turn off] input.
Fairchild SyncFET
TM
[integrated Schottky diode] technology
in the low side MOSFET.
Integrated bootstrap Schottky diode.
Adaptive gate drive timing for shoot-through protection.
Driver output disable function [DISB# pin].
Undervoltage lockout (UVLO).
Fairchild Green Packaging and RoHS
compliant. Low profile SMD package.
The XS
TM
DrMOS family is Fairchild’s next-generation fully-
optimized, ultra-compact, integrated MOSFET plus driver power
stage solutions for high current, high frequency synchronous
buck DC-DC applications. The FDMF6704V XS
TM
DrMOS
integrates a driver IC, two power MOSFETs and a bootstrap
Schottky diode along with an integrated 5 V gate drive LDO
regulator into a thermally enhanced, ultra compact 6 mm x 6
mm MLP package. With an integrated approach, the complete
switching power stage is optimized with regards to driver and
MOSFET dynamic performance, system inductance and
R
DS(ON)
. This greatly reduces the package parasitics and layout
challenges associated with conventional discrete solutions.
DrMOS
uses
Fairchild's
high
performance
XS
TM
TM
PowerTrench
5 MOSFET technology, which dramatically
reduces ringing in synchronous buck converter applications.
PowerTrench
TM
5 can eliminate the need for a snubber circuit in
buck converter applications. The driver IC incorporates
advanced features such as SMOD for improved light load
efficiency and a Tri-State PWM input for compatibility with a
wide range of PWM controllers. A 5 V gate drive and an
improved PCB interface, optimized for a maximum low side FET
exposed pad area, ensure higher performance. This product is
compatible with the new Intel 6 mm x 6 mm DrMOS
specification.
Applications
Compact blade servers V-core, non V-core and VTT DC-DC
converters.
Desktop computers V-core, non V-core and VTT DC-DC
converters.
Workstations V-core, non V-core and VTT DC-DC
converters.
Gaming Motherboards V-core, non V-core and VTT DC-DC
converters.
Gaming consoles.
High-current DC-DC Point of Load (POL) converters.
Networking and telecom microprocessor voltage regulators.
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