Datasheet
Micrel Inc. MIC4451/4452
October 2011 3
M9999-103111-B
Absolute Maximum Ratings
(1, 2)
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(10s) ............................................ 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
V Version........................................... −40°C to + 125°C
Thermal Impedances (To Case)
5-Pin TO-220(JC) ........................................... 10°C/W
Electrical Characteristics
(3)
(T
A
= 25
o
C, with 4.5V ≤ V
S
≤ 18V unless otherwise specified.)
Symbol Parameter Condition Min. Typ. Max. Units
Input
V
IH
Logic 1 Input Voltage 2.4 1.3 V
V
IL
Logic 0 Input Voltage 1.1 0.8 V
V
IN
Input Voltage Range
−5
V
S
+ .3 V
I
IN
Input Current 0 V
IN
V
S
−10
10 A
Output
V
OH
High Output Voltage See Figure 1
V
S
−.025
V
V
OL
Low Output Voltage See Figure 1 0.025 V
R
O
Output Resistance,
Output High
I
OUT
= 10mA, V
S
= 18V 0.6 1.5
R
O
Output Resistance, Output Low I
OUT
= 10mA, V
S
= 18V 0.8 1.5
I
PK
Peak Output Current V
S
= 18V (See Figure 6) 12 A
I
DC
Continuous Output Current 2 A
I
R
Latch-up Protection
Withstand Reverse Current
Duty Cycle 2%
t ≤ 300s
>1500
mA
Switching Time
(3)
t
R
Rise Time Test Figure 1, C
L
= 15,000pF 20 40 ns
t
F
Fall Time Test Figure 1, C
L
= 15,000pF 24 50 ns
t
D1
Delay Time Test Figure 1 25 50 ns
t
D2
Delay Time Test Figure 1 40 60 ns
Power Supply
I
S
Power Supply Current
V
IN
= 3V
V
IN
= 0V
0.4
80
1.5
150
mA
A
V
S
Operating Input Voltage 4.5 V