Micrel Inc.
MIC4451/4452
Absolute Maximum Ratings
(1,2, 3)
Supply Voltage ..............................................................20V
Input Voltage .................................... V
S
+ 0.3V to GND
−5V
Input Current (V
IN
> V
S
) .................................................5mA
Power Dissipation, T
AMBIENT
≤
25°C
PDIP ..................................................................960mW
SOIC ................................................................1040mW
5-Pin TO-220 ............................................................2W
Power Dissipation, T
CASE
≤
25°C
5-Pin TO-220 .......................................................12.5W
Derating Factors (to Ambient)
PDIP ..............................................................7.7mW/°C
SOIC ..............................................................8.3mW/°C
5-Pin TO-220 ..................................................17mW/°C
Storage Temperature ................................−65°C to +150°C
Lead Temperature(10 sec) ........................................ 300°C
Operating Ratings
Operating Temperature (Chip) .................................. 150°C
Operating Temperature (Ambient)
Z Version .................................................. 0°C to +70°C
Y Version .............................................
−40°C
to + 85°C
Thermal Impedances (To Case)
5-Pin TO-220(θJC) ........................................... 10°C/W
Electrical Characteristics
(4)
Symbol
Input
V
IH
V
IL
V
IN
I
IN
Output
V
OH
V
OL
R
O
R
O
I
PK
I
DC
I
R
High Output Voltage
Low Output Voltage
Output Resistance,
Output High
Logic 1 Input Voltage
Logic 0 Input Voltage
Input Voltage Range
Input Current
Parameter
(T
A
=25
o
C, with 4.5V
≤
V
S
≤
18V unless otherwise specified.)
Condition
Min.
2.4
−5
0
≤
V
IN
≤
V
S
See Figure 1
See Figure 1
I
OUT
= 10mA, V
S
= 18V
I
OUT
= 10mA, V
S
= 18V
V
S
= 18V (See Figure 6)
2
Duty Cycle
≤
2%
t
≤
300μs
Test Figure 1, C
L
= 15,000pF
Test Figure 1, C
L
= 15,000pF
Test Figure 1
Test Figure 1
V
IN
= 3V
V
IN
= 0V
4.5
>1500
0.6
0.8
12
−10
V
S
−.025
.025
1.5
1.5
Typ.
1.3
1.1
0.8
V
S
+ .3
10
Max.
Units
V
V
V
μA
V
V
Ω
Ω
A
A
mA
Output Resistance, Output Low
Peak Output Current
Continuous Output Current
Latch-up Protection
Withstand Reverse Current
Rise Time
Fall Time
Delay Time
Delay Time
Switching Time
(3)
t
R
t
F
t
D1
t
D2
20
24
25
40
0.4
80
40
50
50
60
1.5
150
ns
ns
ns
ns
mA
μA
V
Power Supply
I
S
V
S
Power Supply Current
Operating Input Voltage
January 2011
3
M9999-011811