Micrel, Inc.
MIC4421A/4422A
Absolute Maximum Ratings
(1)
Supply Voltage (V
S
)......................................................+20V
Control Input Voltage (V
IN
). ............. V
S
+ 0.3V to GND – 5V
Control Input Current (V
IN
> V
S
). .................................50mA
Power Dissipation, T
A
< +25°C
(4)
PDIP (θ
JA
) ........................................................1478mW
SOIC (θ
JA
) ..........................................................767mW
TO-220 (θ
JA
)........................................................1756W
Lead Temperature (soldering, #sec.)......................... 300°C
Storage Temperature (T
s
) .........................–65°C to +150°C
ESD Rating
(3)
.................................................................. 2kV
Operating Ratings
(2)
Supply Voltage (V
S
)....................................... +4.5V to +18V
Ambient Temperature (T
A
)
A Version ............................................ –55°C to +125°C
B Version .............................................. –40°C to +85°C
C Version .................................................. 0°C to +70°C
Junction Temperature (T
J
) ......................................... 150°C
Package Thermal Resistance
(4)
PDIP (θ
JA
) .......................................................84.6°C/W
SOIC (θ
JA
) .....................................................163.0°C/W
TO-220 (θ
JA
)....................................................71.2°C/W
PDIP (θ
JC
) .......................................................41.2°C/W
SOIC (θ
JC
).......................................................38.8°C/W
TO-220 (θ
JC
) .....................................................6.5°C/W
Electrical Characteristics
T
A
= 25°C with 4.5V
≤
V
S
≤
18V,
bold
values indicate –55°C< T
A
< +125°C, unless noted.
Symbol
V
S
I
S
Parameter
Operating Input Voltage
High Output Quiescent Current
Low Output Quiescent Current
Input
V
IH
V
IL
V
IN
I
IN
Output
V
OH
V
OL
R
O
High Output Voltage
Low Output Voltage
Output Resistance,
Output High
Output Resistance,
Output Low
I
PK
I
DC
I
R
Peak Output Current
Continuous Output Current
Latch-Up Protection
Withstand Reverse Current
Rise Time
Fall Time
Delay Time
Duty Cycle
≤
2%
t
≤
300µs,
Note 5
Test Figure 1, C
L
= 10,000pF
Test Figure 1, C
L
= 10,000pF
Test Figure 1
>1500
See Figure 1
See Figure 1
I
OUT
= 10mA, V
S
= 18V
I
OUT
= 10mA, V
S
= 18V
V
S
= 18V (See Figure 8)
0.6
0.8
9
2
V
S
+.025
0.025
1.0
3.6
1.7
2.7
V
V
Ω
Ω
Ω
Ω
A
A
mA
Logic 1 Input Voltage
Logic 0 Input Voltage
Input Voltage Range
Input Current
0V
≤
V
IN
≤
V
S
See Figure 3
See Figure 3
–5
–10
3.0
2.1
1.5
0.8
V
S
+0.3
10
V
V
V
µA
V
IN
= 3V (MIC4422A), V
IN
= 0 (MIC4421A)
V
IN
= 0V (MIC4422A), V
IN
= 3V (MIC4421A)
Condition
Min
4.5
0.5
50
Typ
Max
18
1.5
3
150
200
Units
V
mA
mA
µA
µA
Power Supply
Switching Time (Note 5)
t
R
t
F
t
D1
20
24
15
75
120
75
120
68
80
ns
ns
ns
ns
ns
ns
June 2007
3
M9999-062707
MIC [ MIC GROUP RECTIFIERS ]
