MIC2544A Datasheet, PDF (8/19 Pages) Micrel Semiconductor – Programmable Current Limit High-Side Switch

Micrel, Inc.
Typical Characteristics
Shutdown Current
vs. Input Voltage
1.0
0.8
0.6
0.4
40°C
0.2 25°C
85°C
0.0
2.5 3 3.5 4 4.5 5 5.5
INPUT VOLTAGE (V)
Current Limit
vs. Input Voltage
2.0
-40°C
1.5
25°C
85°C
1.0
0.5
0.0
2.5 3 3.5 4 4.5 5 5.5
INPUT VOLTAGE (V)
Shutdown Current
vs. Temperature
1.0
0.8
0.6
0.4
5V
0.2
3.3V
0.0
-40 -15 10 35 60 85
TEMPERATURE (°C)
Current Limit
vs. Temperature
2.0
5V
1.5
3.3V
1.0
0.5
0.0
-40 -15 10 35 60 85
TEMPERATURE (°C)
April 2010
Supply Current
vs. Input Voltage
120
-40°C
100
25°C
80
85°C
60
40
20
0
2.5 3 3.5 4 4.5 5 5.5
INPUT VOLTAGE (V)
Short Circuit Current
vs. Input Voltage
1.6
-40°C
1.4
85°C
1.2
1.0
25°C
0.8
0.6
0.4
0.2
0.0
2.5 3 3.5 4 4.5 5 5.5
INPUT VOLTAGE (V)
Supply Current
vs. Temperature
90
80
70
5V
60
3.3V
50
40
30
20
10
0
-40 -15 10 35 60 85
TEMPERATURE (°C)
Short Circuit Current
vs. Temperature
2.0
1.5
3.3V
1.0
5V
0.5
0.0
-40 -15 10 35 60 85
TEMPERATURE (°C)
8
MIC2544A/2548A
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
2.5
Enable Threshold
vs. Input Voltage
Rising
Falling
Hysteresis
3 3.5 4 4.5 5 5.5
INPUT VOLTAGE (V)
RDS(ON)
vs. Input Voltage
120
85°C
100
80
25°C
60
-40°C
40
20
0
2.5 3 3.5 4 4.5 5 5.5
INPUT VOLTAGE (V)
Enable Threshold
vs. Temperature
2.5
2.0
Rising
1.5
Falling
1.0
0.5
Hysteresis
0.0
-40 -15 10 35 60 85
TEMPERATURE (°C)
RDS(ON)
vs. Temperature
100
90
5V
80
70
60
3.3V
50
40
30
20
10
0
-40 -15 10 35 60 85
TEMPERATURE (°C)
M9999-043010