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Micrel, Inc.
Typical Characteristics (Continued)
MIC3203
VCC vs. Input Voltage
Enable Threshold
Current-Sense Voltage
6.0
1.8
vs. Input Voltage
250
vs. Input Voltage
1.6
5.0
1.4
200
4.0
3.0
TA = 25°C
ILED = 0A
ICC = 0A
1.2
1.0
0.8
TA = 25°C
ILED = 0A
ICC = 0A
150
100
VCS_MIN
VCS_MAX
L = 100μH
2.0
1.0
0.0
0.6
0.4
0.2
0.0
50
0
ILED = 1A
0
5
10
15
20
25
30
35
40
45
0
5
10
15
20
25
30
35
40
45
0
5
10
15
20
25
30
35
40
45
40
35
30
25
20
INPUT VOLTAGE (V)
Shutdown Current
vs. Input Voltage
160
140
120
100
INPUT VOLTAGE (V)
Enable Current
vs. Enable Voltage
200
180
160
140
120
INPUT VOLTAGE (V)
ICC Limit
vs. Input Voltage
15
10
5
0
TA = 25°C
ILED = 0A
80
60
40
20
TA = 25°C
100
80
60
40
20
TA = 25°C
VCC = 4.2V
ILED = 0A
-5
0
0
0
5
10
15
20
25
30
35
40
45
0
5
10
15
20
25
30
35
40
45
0
5
10
15
20
25
30
35
40
45
INPUT VOLTAGE (V)
Supply Current
ENABLE VOTLAGE (V)
VCC
INPUT VOLTAGE (V)
Enable Threshold
1.2
vs. Temperature
6.0
vs. Temperature
2.0
vs. Temperature
1.8
1.0
5.0
1.6
ON
0.8
0.6
VIN = 12V
ILED = 0A
4.0
3.0
VIN = 12V
ICC = 0A
1.4
1.2
1.0
OFF
0.8
0.4
0.2
0.0
2.0
1.0
0.0
0.6
0.4
0.2
0.0
-40
-20
0
20
40
60
80
100
120
-40
-20
0
20
40
60
80
100
120
-40
-20
0
20
40
60
80
100
120
March 2010
TEMPERATURE (°C)
TEMPERATURE (°C)
6
TEMPERATURE (°C)
M9999-032910-A
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