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Fairchild FDD6778A Product Specifications Sheet

Summary

The FDD6778A is an N-Channel PowerTrench MOSFET from Fairchild in a D-PAK (TO-252) package, designed to improve DC/DC converter efficiency with synchronous or conventional PWM controllers. It features 14.0mOhm on-resistance at 10V gate drive, low gate charge, and fast switching. With 25V drain-source voltage and 10A continuous current, it is 100% UIL tested and RoHS compliant. Applications include Vcore DC-DC converters for desktop computers and servers, targeting power supply designers in the computing industry.

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FD 6778A -C hannel Pow er Trench SFET

January 2009

FDD6778A N-Channel Power Trench® MOSFET 25 V, 14.0 mΩ Features General Description

Max r DS(on) = 14.0 mΩ at VGS = 10 V, ID = 10.0 A This N-Channel MOSFET has been designed specifically to improve the overall efficiency of DC/DC converters using either

Max r DS(on) = 30.0 mΩ at VGS = 4.5 V, ID = 9.7 A

synchronous or conventional switching PWM controllers. It has been optimized for low gate charge, low r DS(on) and fast

100% UIL tested

switching speed.

Ro HS Compliant

Applications Vcore DC-DC for Desktop Computers and Servers VRM for Intermediate Bus Architecture

TO-252D-PAK (TO-252)

MOSFET Maximum Ratings TC = 25 °C unless otherwise noted Symbol Parameter Ratings Units

VDS Drain to Source Voltage VGS Gate to Source Voltage ±20 Drain Current -Continuous (Package limited) TC = 25 °C 10 -Continuous (Silicon limited) TC = 25 °C

-Continuous TA = 25 °C (Note 1a) -Pulsed EAS Single Pulse Avalanche Energy (Note 3) m J Power Dissipation TC = 25 °C

Power Dissipation TA = 25 °C (Note 1a) 3.7

TJ, TSTG Operating and Storage Junction Temperature Range -55 to +175 °C

Thermal Characteristics

RθJC Thermal Resistance, Junction to Case 6.2

RθJA Thermal Resistance, Junction to Ambient (Note 1a)

Package Marking and Ordering Information Device Marking Device Package Reel Size Tape Width Quantity FDD6778A FDD6778A D-PAK (TO-252) 13 ’’ 12 mm 2500 units

©20 09 Fairchild Semiconductor Corporation www.fairchildsemi.com1 FD D6778A Rev.C

Page Summary Contents For Fairchild FDD6778A Product Specifications Sheet

Page 1 FD 6778A -C hannel Pow er Trench SFET January 2009 FDD6778A N-Channel Power Trench® MOSFET 25 V, 14.0 mΩ Features General Description Max r DS(on) = 14.0 mΩ at VGS = 10 V, ID = 10.0 A This N-Channel M...
Page 2 FD 6778A -C hannel Pow er Trench SFET Electrical Characteristics TJ = 25 °C unless otherwise noted Symbol Parameter Test Conditions Min Typ Max Units Off Characteristics BVDSS Drain to Source Breakdow...
Page 3 FD 6778A -C hannel Pow er Trench SFET Typical Characteristics TJ = 25 °C unless otherwise noted LI ZE , D IN EN (A , D IN EN (A IN -R ES IS TA VGS = 10 V PULSE DURATION = 80 µs DUTY CYCLE = 0.5% MAX V...
Page 4 FD 6778A -C hannel Pow er Trench SFET Typical Characteristics TJ = 25 °C unless otherwise noted S, VA LA EN (A , D IN EN (A TE VO LT (V ID = 10 A VDD = 13 VVDD = 10 V VDD = 16 V f = 1 MHz VGS = 0 V VD...
Page 5 FD 6778A -C hannel Pow er Trench SFET Typical Characteristics TJ = 25 °C unless otherwise noted LI ZE ER LI ZE ER IM PE E, θJ IM PE E, θJ DUTY CYCLE-DESCENDING ORDER D = 0.5 0.2 0.1 PDM 0.01 NOTES: DU...
Page 6 FD 6778A -C hannel Pow er Trench SFET TRADEMARKS The following includes registered and unregistered trademarks and service marks, owned by Fairchild Semiconductor and/or its global subsidiaries, and i...

Manual Details

Brand Fairchild
Pages 6
File Size 313.36 KB
Published June 17, 2026
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Frequently Asked Questions

What is the drain to source voltage rating?

The maximum drain to source voltage rating is 25 V.

What package does the FDD6778A use?

It is offered in a D-PAK (TO-252) package.

What is the max on resistance at 10 V?

The maximum static drain to source on resistance is 14.0 mΩ at VGS=10 V.

Is this MOSFET RoHS compliant?

Yes, the FDD6778A is RoHS compliant.