General Description
The AAT7128 30V N-Channel Power MOSFET is a
member of AnalogicTech's TrenchDMOS™ prod-
uct family. Using the ultra-high density proprietary
TrenchDMOS technology, this product demon-
strates high power handling and small size.
Applications
• Battery-powered portable equipment
• Laptop computers
• Desktop computers
• DC/DC converters
Features
•V
DS(MAX) = 30V
•I
D(MAX) 1= 4.8A @ 25°C
• Low RDS(ON):
• 50 mΩ@VGS = 10V
• 80 mΩ@ VGS = 4.5V
Dual SOP-8L Package
D1 D1 D2 D2
S1 G1 S2 G2
Top View
1234
8765
AAT7128
30V N-Channel Power MOSFET
Absolute Maximum Ratings (TA=25°C unless otherwise noted)
Thermal Characteristics
Symbol Description Value Units
RθJA Typical Junction-to-Ambient steady state, one FET on 1100 °C/W
RθJA2 Industry Standard Junction-to-Ambient Figure, t < 10 sec. 165 °C/W
RΘJC Typical Junction-to-Case, one FET on 135 °C/W
Symbol Description Value Units
VDS Drain-Source Voltage 30 V
VGS Gate-Source Voltage ±20
IDContinuous Drain Current @ TJ=150°C 1TA= 25°C ±4.8
TA= 70°C ±3.8 A
IDM Pulsed Drain Current 2±24
ISContinuous Source Current (Source-Drain Diode) 11.7
PDMaximum Power Dissipation 1TA= 25°C 1.9 W
TA= 70°C 1.2
TJ, TSTG Operating Junction and Storage Temperature Range -55 to 150 °C
Preliminary Information
7128.2002.11.0.6 1
Electrical Characteristics (TJ=25°C unless otherwise noted)
Note 1: Based on thermal dissipation from junction to ambient while mounted on a 1" x 1" PCB with optimized layout. A 5 second pulse
on a 1" x 1" PCB approximates testing a device mounted on a large multi-layer PCB as in most applications. RθJF + RθFA = RθJA where
the foot thermal reference is defined as the normal solder mounting surface of the device's leads. RθJF is guaranteed by design, howev-
er RθCA is determined by the PCB design. Actual maximum continuous current is limited by the application's design.
Note 2: Pulse test: Pulse Width = 300 µs
Note 3: Guaranteed by design. Not subject to production testing.
Symbol Description Conditions Min Typ Max Units
DC Characteristics
BVDSS Drain-Source Breakdown Voltage VGS=0V, ID=250µA 30 V
RDS(ON) Drain-Source ON-Resistance 2VGS=10V, ID=4.8A 40 50 mΩ
VGS=4.5V, ID=3.8A 60 80
ID(ON) On-State Drain Current 2VGS=10V, VDS=5V (Pulsed) 24 A
VGS(th) Gate Threshold Voltage VGS=VDS, ID=250µA 1.0 V
IGSS Gate-Body Leakage Current VGS=±20V, VDS=0V ±100 nA
IDSS Drain Source Leakage Current VGS=0V, VDS=30V 1 µA
VGS=0V, VDS=30V, TJ=70°C 5
gfs Forward Transconductance 2VDS=5V, ID=4.8A 6 S
Dynamic Characteristics 3
QGTotal Gate Charge VDS=15V, RD=3.2Ω, VGS=5V 4.5 nC
QGT Total Gate Charge VDS=15V, RD=3.2Ω, VGS=10V 8.5 nC
QGS Gate-Source Charge VDS=15V, RD=3.2Ω, VGS=10V 1.5 nC
QGD Gate-Drain Charge VDS=15V, RD=3.2Ω, VGS=10V 1.3 nC
tD(ON) Turn-ON Delay VDD=15V, VGS=10V, RD=3.2Ω, RG=6ΩTBD ns
tRTurn-ON Rise Time VDD=15V, VGS=10V, RD=3.2Ω, RG=6ΩTBD ns
tD(OFF) Turn-OFF Delay VDD=15V, VGS=10V, RD=3.2Ω, RG=6ΩTBD ns
tFTurn-OFF Fall Time VDD=15V, VGS=10V, RD=3.2Ω, RG=6ΩTBD ns
Source-Drain Diode Characteristics
VSD Source-Drain Forward Voltage 2VGS=0, IS=4.8A 1.4 V
ISContinuous Diode Current 11.7 A
AAT7128
30V N-Channel Power MOSFET
27128.2002.11.0.6
Typical Characteristics
(TJ= 25ºC unless otherwise noted)
Source-Drain Diode Forward Voltage
0.1
1
10
100
0 0.2 0.4 0.6 0.8 1 1.2 1.4
VSD (V)
IS (A)
TJ = 150°C
TJ = 25°C
Gate Charge
0
2
4
6
8
10
0246810
QG, Charge (nC)
VGS (V)
VD=15V
ID=4.8A
On-Resistance vs. Gate to Source Voltage
0
20
40
60
80
100
120
024 6810
VGS (V)
RDS(ON) (mΩ)
ID = 4.8A
On-Resistance vs. Drain Current
0
15
30
45
60
75
0 4 8 12162024
ID (A)
RDS(ON) (mΩ)
VGS = 10V
VGS = 4.5V
Transfer Characteristics
0
6
12
18
24
01 23 4 65
VGS (V)
ID (A)
-55°C
25°C
125°C
Output Characteristics
0
6
12
18
24
0 0.5 1 1.5 2 2.5 3
VDS (V)
IDS (A)
3V
3.5V
4V
10V
6V 5V 4.5V
AAT7128
30V N-Channel Power MOSFET
7128.2002.11.0.6 3
AAT7128
30V N-Channel Power MOSFET
47128.2002.11.0.6
Advanced Analogic Technologies, Inc.
830 E. Arques Avenue, Sunnyvale, CA 94085
Phone (408) 737-4600
Fax (408) 737-4611
Ordering Information
Package Information
SOP-8
0.175 ± 0.075 6.00 ± 0.20
3.90 ± 0.10
1.55 ± 0.20
1.27 BSC0.42 ± 0.09 × 8
4.90 ± 0.10
4° ± 4°
45°
0.375 ± 0.125
0.235 ± 0.045
0.825 ± 0.445
Package Marking Part Number
Bulk Tape and Reel
SOP-8 7128 N/A AAT7128IAS-T1
