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FDS6994S

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FDS6994S

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FDS6994S

October 2006

FDS6994S
Dual Notebook Power Supply N-Channel PowerTrench SyncFetTM
General Description
The FDS6994S 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. FDS6994S 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 body diode RDS(on) 15 m VGS 10V RDS(on) 17.5 m VGS 4.5V Q1: Optimized for low switching losses Low gate charge (85.5 nC typical) RDS(on) 21 m VGS 10V RDS(on) 26 m VGS 4.5V

8.2A, 30V

6.9A, 30V

D1 D1 D2 D2 S1 G1
6 7 5
Q1

4 3 2
Q2

SO-8
S2

8

1

G2

Absolute Maximum Ratings
Symbol
VDSS VGSS ID PD Drain-Source Voltage Gate-Source Voltage

TA 25 C unless otherwise noted

Parameter

Q2
30
(Note 1a)

Q1
30 16 6.9 20 2 1.6 1 0.9 -55 to 150

Units
V V A W

- Continuous - Pulsed Power Dissipation for Dual Operation Power Dissipation for Single Operation

Drain Current

16 8.2 30

(Note 1a) (Note 1b) (Note 1c)

TJ, TSTG

Operating and Storage Junction Temperature Range

C

Thermal Characteristics
RJA RJC 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 FDS6994S
2006 Fairchild Semiconductor Corporation

Device FDS6994S

Reel Size 13"

Tape width 12mm

Quantity 2500 units
FDS6994S Rev C2(W)

FDS6994S Datasheet Fairchild Download PDF

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