AO4844
Dual N-Channel Enhancement Mode Field Effect Transistor
General Description
The AO4844 uses advanced trench technology to
provide excellent R
DS(ON)
and low gate charge. The
two MOSFETs make a compact and efficient switch
and synchronous rectifier combination for use in buck
converters.
AO4844 is Pb-free (meets ROHS & Sony
259 specifications). AO4844L is a Green Product
ordering option. AO4844 and AO4844L are
electrically identical.
Features
V
DS
(V) = 30V
I
D
= 6.9A
(V
GS
= 10V)
R
DS(ON)
< 28mΩ (V
GS
= 10V)
R
DS(ON)
< 42mΩ (V
GS
= 4.5V)
D1
S2
G2
S1
G1
1
2
3
4
8
7
6
5
D2
D2
D1
D1
G1
G2
S1
D2
SOIC-8
S2
Absolute Maximum Ratings T
A
=25°C unless otherwise noted
Parameter
Symbol
V
DS
Drain-Source Voltage
V
GS
Gate-Source Voltage
Continuous Drain
A
Current
Pulsed Drain Current
Power Dissipation
B
Maximum
30
±20
6.9
5.8
30
2
1.44
-55 to 150
Units
V
V
A
5.8554
T
A
=25°C
T
A
=70°C
T
A
=25°C
T
A
=70°C
I
D
I
DM
P
D
T
J
, T
STG
W
°C
Junction and Storage Temperature Range
Thermal Characteristics
Parameter
Maximum Junction-to-Ambient
A
Maximum Junction-to-Ambient
A
C
Maximum Junction-to-Lead
Symbol
t
≤
10s
Steady-State
Steady-State
R
θJA
R
θJL
Typ
48
74
35
Max
62.5
110
40
Units
°C/W
°C/W
°C/W
Alpha & Omega Semiconductor, Ltd.
AOSMD [ ALPHA & OMEGA SEMICONDUCTORS ]
