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FDS6984S

Fairchild Semiconductor
Part Number FDS6984S
Manufacturer Fairchild Semiconductor
Description Dual Notebook Power Supply N-Channel PowerTrench SyncFET
Published Mar 30, 2005
Detailed Description FDS6984S May 2000 PRELIMINARY FDS6984S Dual Notebook Power Supply N-Channel PowerTrench® SyncFET ™ General Description...
Datasheet PDF File FDS6984S PDF File

FDS6984S
FDS6984S

Overview
FDS6984S May 2000 PRELIMINARY FDS6984S Dual Notebook Power Supply N-Channel PowerTrench® SyncFET ™ General Description The FDS6984S is designed to replace two single SO-8 MOSFETs and Schottky diode in synchronous DC:DC power supplies that provide various peripheral voltages for notebook computers and other battery powered electronic devices.
FDS6984S contains two unique 30V, N-channel, logic level, PowerTrench MOSFETs designed to maximize power conversion efficiency.
The high-side switch (Q1) is designed with specific emphasis on reducing switching losses while the lowside switch (Q2) is optimized to reduce conduction losses.
Q2 also includes an integrated Schottky diode using Fairchild’s monolithic SyncFET technology.
Features • Q2: Optimized to minimize conduction losses Includes SyncFET Schottky diode RDS(on) = 0.
019Ω @ VGS = 10V RDS(on) = 0.
027Ω @ VGS = 4.
5V • Q1: Optimized for low switching losses Low gate charge ( 5 nC typical) RDS(on) = 0.
040Ω @ VGS = 10V RDS(on) = 0.
055Ω @ VGS = 4.
5V 8.
5A, 30V 5.
5A, 30V 5 6 7 Q2 Q1 4 3 2 1 8 Absolute Maximum Ratings Symbol VDSS VGSS ID PD Drain-Source Voltage Gate-Source Voltage Drain Current - Continuous - Pulsed T A = 25°C unless otherwise noted Parameter Q2 30 ±20 (Note 1a) Q1 30 ±20 5.
5 20 2 Units V V A W 8.
5 30 Power Dissipation for Dual Operation Power Dissipation for Single Operation (Note 1a) (Note 1b) (Note 1c) 1.
6 1 0.
9 -55 to +150 °C TJ, TSTG Operating and Storage Junction Temperature Range Thermal Characteristics RθJ A RθJC Thermal Resistance, Junction-to-Ambient Thermal Resistance, Junction-to-Case (Note 1a) (Note 1) 78 40 °C/W °C/W Package Marking and Ordering Information Device Marking FDS6984S Device FDS6984S Reel Size 13” Tape width 12mm Quantity 2500 units © 2000 Fairchild Semiconductor Corporation FDS6984S Rev B(W) FDS6984S Electrical Characteristics Symbol BVDSS IDSS IGSSF IGSSR T A = 25°C unless otherwise noted Parameter Drain-Source Breakdown Voltage Test Conditions VGS = 0...


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