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