FDS6994S Fairchild Semiconductor, FDS6994S Datasheet - Page 8

• Manufacturer Part Number: FDS6994S
• Description: MOSFET N-CH DUAL 30V 8SOIC
• Manufacturer: Fairchild Semiconductor
• Series: PowerTrench®, SyncFET™r

Specifications of FDS6994S

• Fet Type: 2 N-Channel (Dual)
• Fet Feature: Logic Level Gate
• Rds On (max) @ Id, Vgs: 21 mOhm @ 6.9A, 10V
• Drain To Source Voltage (vdss): 30V
• Current - Continuous Drain (id) @ 25° C: 6.9A, 8.2A
• Vgs(th) (max) @ Id: 3V @ 250µA
• Gate Charge (qg) @ Vgs: 12nC @ 5V
• Input Capacitance (ciss) @ Vds: 800pF @ 15V
• Power - Max: 900mW
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Configuration: Dual Dual Drain
• Transistor Polarity: N-Channel
• Resistance Drain-source Rds (on): 0.021 Ohm @ 10 V @ Q1
• Drain-source Breakdown Voltage: 30 V
• Gate-source Breakdown Voltage: +/- 16 V
• Continuous Drain Current: 6.9 A @ Q1 or 8.2 A @ Q2
• Power Dissipation: 2000 mW
• Maximum Operating Temperature: + 150 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 55 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Typical Characteristics
SyncFET Schottky Body Diode
Characteristics
Fairchild’s SyncFET process embeds a Schottky diode in
parallel with PowerTrench MOSFET. This diode exhibits
similar characteristics to a discrete external Schottky
diode in parallel with a MOSFET. Figure 22 shows the
reverse recovery characteristic of the FDS6994S.
For comparison purposes, Figure 23 shows the reverse
recovery characteristics of the body diode of an
equivalent size MOSFET produced without SyncFET
(FDS6690A).
Figure 23. Non-SyncFET (FDS6690A) body
Figure 22. FDS6994S SyncFET body diode
reverse recovery characteristic.
diode reverse recovery characteristic.
10nS/DIV
10nS/DIV
(continued) This section copied from FDS6984S datasheet
0V
Schottky barrier diodes exhibit significant leakage at high
temperature and high reverse voltage. This will increase
the power in the device.
leakage versus drain-source voltage and
Figure 24. SyncFET body diode reverse
0.00001
0.0001
0.001
0.01
0.1
0
temperature.
V
DS
, REVERSE VOLTAGE (V)
10
125
25
o
o
C
C
20
FDS6994S Rev C2(W)
30