FDS6984S

Transistor Polarity : N-Channel
Gate-Source Breakdown Voltage : +/- 20 V
Mounting Style : SMD/SMT
Packaging : Reel
Drain-Source Breakdown Voltage : 30 V
Maximum Operating Temperature : + 150 C
Configuration : Dual Dual Drain
Package / Case : SOIC-8 Narrow
Resistance Drain-Source RDS (on) : 0.019 Ohms
Continuous Drain Current : 5.5 A, 8.5 A


Features:

•  Q2: Optimized to minimize conduction losses
    Includes SyncFET Schottky diode8.5A,  30V RDS(on)= 19 mΩ @ VGS = 10V
                                                                        RDS(on)= 28 mΩ @ VGS = 4.5V
•  Q1: Optimized for low switching losses
     Low gate charge ( 5 nC typical) 5.5A,  30V RDS(on)= 0.040Ω @ VGS = 10V
                                                                        RDS(on)= 0.055Ω @ VGS = 4.5V


Pinout




Specifications

Symbol	Parameter	Q2	Q1	Units
VDSS	Drain-Source Voltage	30	30	V
VGSS	Gate-Source Voltage	±20	±16	V
ID	Drain Current - Continuous (Note 1a) - Pulsed	8.5	5.5	A
		30	20
PD	Power Dissipation for Dual Operation	2		W
	Power Dissipation for Single Operation (Note 1a) (Note 1b) (Note 1c)	1.6
		1
		0.9
TJ, TSTG	Operating and Storage Junction Temperature Range	-55 to +150		°C

Description

The FDS6984S is designed to replace two single SO-8 MOSFETs and Schottky diodea 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 FDS6984S high-side switch (Q1) is designed with specific emphasis on reducing switching losses while the low- side switch (Q2) is optimized to reduce conduction losses. Q2 also includes an integrated Schottky diode using Fairchild's monolithic SyncFET technology.

Parameters:

Technical/Catalog Information	FDS6984S
Vendor	Fairchild Semiconductor
Category	Discrete Semiconductor Products
Mounting Type	Surface Mount
FET Polarity	2 N-Channel (Dual)
Drain to Source Voltage (Vdss)	30V
Current - Continuous Drain (Id) @ 25° C	8.5A, 5.5A
Rds On (Max) @ Id, Vgs	19 mOhm @ 8.5A, 10V
Input Capacitance (Ciss) @ Vds	1233pF @ 15V
Power - Max	2W
Packaging	Tape & Reel (TR)
Gate Charge (Qg) @ Vgs	12nC @ 4.5V
Package / Case	SO-8
FET Feature	*
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	FDS6984S FDS6984S FDS6984STR ND FDS6984STRND FDS6984STR