Symbol
V
DS
V
GS
I
DM
T
J
, T
STG
Symbol
Typ
Max
24
40
54
75
R
JL
21
30
W
Maximum Junction-to-Lead
C
Steady-State
C/W
Thermal Characteristics
Parameter
Units
Maximum Junction-to-Ambient
A
t 10s
R
JA
C/W
Maximum Junction-to-Ambient
A
Steady-State
C/W
20
Gate-Source Voltage
Drain-Source Voltage
-60
Continuous Drain
Current
A
Maximum
Units
Parameter
T
A
=25C
T
A
=70C
Absolute Maximum Ratings T
A
=25C unless otherwise noted
V
V
-5
-40
Pulsed Drain Current
B
Power Dissipation
A
T
A
=25C
Junction and Storage Temperature Range
A
P
D
C
3.1
2
-55 to 150
T
A
=70C
I
D
-6.2
AO4421
P-Channel Enhancement Mode Field Effect Transistor
Features
V
DS
(V) = -60V
I
D
= -6.2 A (V
GS
= -10V)
R
DS(ON)
< 40m
(V
GS
= -10V)
R
DS(ON)
< 50m
(V
GS
= -4.5V)
General Description
The AO4421 uses advanced trench technology to
provide excellent R
DS(ON)
, and ultra-low low gate
charge. This device is suitable for use as a load
switch or in PWM applications.
Standard Product
AO4412 is Pb-free (meets ROHS & Sony 259
specifications). AO4421L is a Green Product
ordering option. AO4421 and AO4421L are
electrically identical.
SOIC-8
Top View
G
D
S
G
S
S
S
D
D
D
D
Alpha & Omega Semiconductor, Ltd.
AO4421, AO4421L
Symbol
Min
Typ
Max
Units
BV
DSS
-60
V
-1
T
J
=55C
-5
I
GSS
100
nA
V
GS(th)
-1
-2
-3
V
I
D(ON)
-40
A
32
40
T
J
=125C
53
70
40
50
m
g
FS
18
S
V
SD
-0.74
-1
V
I
S
-4.2
A
C
iss
2417
2900
pF
C
oss
179
pF
C
rss
120
pF
R
g
1.9
2.3
Q
g
(10V)
46.5
55
nC
Q
g
(4.5V)
22.7
nC
Q
gs
9.1
nC
Q
gd
9.2
nC
t
D(on)
9.8
ns
t
r
6.1
ns
t
D(off)
44
ns
t
f
12.7
ns
t
rr
34
42
ns
Q
rr
47
nC
THIS PRODUCT HAS BEEN DESIGNED AND QUALIFIED FOR THE CONSUMER MARKET. APPLICATIONS OR USES AS CRITICAL
COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS ARE NOT AUTHORIZED. AOS DOES NOT ASSUME ANY LIABILITY ARISING
OUT OF SUCH APPLICATIONS OR USES OF ITS PRODUCTS. AOS RESERVES THE RIGHT TO IMPROVE PRODUCT DESIGN,
FUNCTIONS AND RELIABILITY WITHOUT NOTICE
Body Diode Reverse Recovery Time
Body Diode Reverse Recovery Charge I
F
=-6.2A, dI/dt=100A/
s
Drain-Source Breakdown Voltage
On state drain current
I
D
=-250
A, V
GS
=0V
V
GS
=-10V, V
DS
=-5V
V
GS
=-10V, I
D
=-6.2A
Reverse Transfer Capacitance
I
F
=-6.2A, dI/dt=100A/
s
Electrical Characteristics (T
J
=25C unless otherwise noted)
STATIC PARAMETERS
Parameter
Conditions
I
DSS
A
Gate Threshold Voltage
V
DS
=V
GS
I
D
=-250
A
V
DS
=-48V, V
GS
=0V
V
DS
=0V, V
GS
=20V
Zero Gate Voltage Drain Current
Gate-Body leakage current
R
DS(ON)
Static Drain-Source On-Resistance
Forward Transconductance
Diode Forward Voltage
m
V
GS
=-4.5V, I
D
=-5A
I
S
=-1A,V
GS
=0V
V
DS
=-5V, I
D
=-6.2A
Turn-On Rise Time
Turn-Off DelayTime
V
GS
=-10V, V
DS
=-30V, R
L
=4.7
,
R
GEN
=3
Gate resistance
V
GS
=0V, V
DS
=0V, f=1MHz
Turn-Off Fall Time
SWITCHING PARAMETERS
Total Gate Charge (4.5V)
Gate Source Charge
Maximum Body-Diode Continuous Current
Input Capacitance
Output Capacitance
Turn-On DelayTime
DYNAMIC PARAMETERS
V
GS
=0V, V
DS
=-30V, f=1MHz
Gate Drain Charge
Total Gate Charge (10V)
V
GS
=-10V, V
DS
=-30V, I
D
=-6.2A
A: The value of R
JA
is measured with the device mounted on 1in
2
FR-4 board with 2oz. Copper, in a still air environment with T
A
=25C. The
value in any given application depends on the user's specific board design. The current rating is based on the t
10s thermal resistance
rating.
B: Repetitive rating, pulse width limited by junction temperature.
C. The R
JA
is the sum of the thermal impedence from junction to lead R
JL
and lead to ambient.
D. The static characteristics in Figures 1 to 6,12,14 are obtained using 80
s pulses, duty cycle 0.5% max.
E. These tests are performed with the device mounted on 1 in
2
FR-4 board with 2oz. Copper, in a still air environment with T
A
=25C. The
SOA curve provides a single pulse rating.
Alpha & Omega Semiconductor, Ltd.
AO4421, AO4421L
TYPICAL ELECTRICAL AND THERMAL CHARACTERISTICS: P-CHANNEL
0
5
10
15
20
25
0
1
2
3
4
5
-V
DS
(Volts)
Fig 1: On-Region Characteristics
-I
D
(A
)
V
GS
=-3V
-6V
-3.5V
-4V
-10V
-4.5V
-5V
0
5
10
15
20
25
30
1
1.5
2
2.5
3
3.5
4
-V
GS
(Volts)
Figure 2: Transfer Characteristics
-I
D
(A
)
30
35
40
45
0
5
10
15
20
-I
D
(A)
Figure 3: On-Resistance vs. Drain Current and
Gate Voltage
R
DS
(
O
N)
(m
)
1.0E-06
1.0E-05
1.0E-04
1.0E-03
1.0E-02
1.0E-01
1.0E+00
1.0E+01
0.0
0.2
0.4
0.6
0.8
1.0
-V
SD
(Volts)
Figure 6: Body-Diode Characteristics
-I
S
(A
)
25C
125C
0.80
1.00
1.20
1.40
1.60
1.80
2.00
0
25
50
75
100
125
150
175
Temperature (C)
Figure 4: On-Resistance vs. Junction
Temperature
N
o
r
m
aliz
ed
On
-R
esistan
ce
V
GS
=-10V
I
D
=-6.2A
V
GS
=-4.5V
I
D
=-5A
20
30
40
50
60
70
80
90
100
2
3
4
5
6
7
8
9
10
-V
GS
(Volts)
Figure 5: On-Resistance vs. Gate-Source Voltage
R
DS
(
O
N)
(m
)
25C
125C
V
DS
=-5V
V
GS
=-4.5V
V
GS
=-10V
I
D
=-6.2A
25C
125C
Alpha & Omega Semiconductor, Ltd.
AO4421, AO4421L
TYPICAL ELECTRICAL AND THERMAL CHARACTERISTICS: P-CHANNEL
0
2
4
6
8
10
0
10
20
30
40
50
-Q
g
(nC)
Figure 7: Gate-Charge Characteristics
-V
GS
(V
ol
ts)
0
500
1000
1500
2000
2500
3000
3500
0
10
20
30
40
50
60
-V
DS
(Volts)
Figure 8: Capacitance Characteristics
C
a
p
acitan
ce (p
F
)
C
iss
0
10
20
30
40
0.001
0.01
0.1
1
10
100
1000
Pulse Width (s)
Figure 10: Single Pulse Power Rating Junction-to-
Ambient (Note E)
Po
w
e
r (
W
)
0.01
0.1
1
10
0.00001
0.0001
0.001
0.01
0.1
1
10
100
1000
Pulse Width (s)
Figure 11: Normalized Maximum Transient Thermal Impedance
Z
JA
N
o
r
m
a
liz
ed
T
r
an
sien
t
T
h
er
m
al R
esistan
ce
C
oss
C
rss
0.1
1.0
10.0
100.0
0.1
1
10
100
-V
DS
(Volts)
-I
D
(A
m
p
s)
Figure 9: Maximum Forward Biased Safe
Operating Area (Note E)
100
s
10ms
1ms
0.1s
1s
10s
DC
R
DS(ON)
limited
T
J(Max)
=150C, T
A
=25C
V
DS
=-30V
I
D
=-6.2A
Single Pulse
D=T
on
/T
T
J,PK
=T
A
+P
DM
.Z
JA
.R
JA
R
JA
=40C/W
T
on
T
P
D
In descending order
D=0.5, 0.3, 0.1, 0.05, 0.02, 0.01, single pulse
T
J(Max)
=150C
T
A
=25C
10
s
Alpha & Omega Semiconductor, Ltd.
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