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Micrel, Inc.
Typical Characteristics (Continued)`
MIC3202
2.0
V IN Supply Current
vs. Temperature
0.4
Shutdown Current
vs. Temperature
4.5
V IN UVLO Threshold
vs. Temperature
V IN =V IN = 12V
V LED = OPEN
V IN = 12V
V EN = 0V
1.5
I LED = 0A
0.3
Rising
4.0
1.0
0.2
3.5
0.5
0.1
Falling
V IN = 12V
V LED = 3.5V
I LED = 1A
0.0
0
3.0
L = 47uH
-50
-20
10
40
70
100
130
-50
-20
10
40
70
100
130
-50
-20
10
40
70
100
130
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
340
330
Switching Frequency
vs. Temperature
V IN = 12V
V LED = 3.5V
I LED = 1A
40
35
Enable Bias Current
vs. Temperature
V IN =V EN = 12V
V LED = OPEN
I LED = 0A
5.20
5.10
V CC Voltage
vs. Temperature
L = 47uH
320
30
5.00
310
25
4.90
V IN = 12V
V LED = OPEN
I LED = 0A
300
20
4.80
-50
-20
10
40
70
100
130
-50
-20
10
40
70
100
130
-50
-20
10
40
70
100
130
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
250
CS Voltage
vs. Temperature
450
Switch R DSON
vs. Temperature
50
Case Temperature
vs. Input Voltage
225
400
200
175
V CS MAX
V CS MIN
V IN = 12V
V LED = 3.5V
I LED = 1A
L = 47uH
350
300
250
V IN = 12V
I SW = 0.2A
40
30
V LED = 3.5V
I LED = 1A
L = 47uH
1oz/3.5 Sq Inch
150
200
20
-50
-20
10
40
70
100
130
-50
-20
10
40
70
100
130
6
14
22
30
38
TEMPERATURE (°C)
TEMPERATURE (°C)
INPUT VOLTAGE (V)
300
Switch Voltage
vs. Switch Current
290
Switch R DSON
vs. Switch Current
300
Switch Voltage
vs. Switch Current
250
200
285
250
200
150
100
280
275
150
100
50
V LED = 3.5V
V IN = 12V
V LED = 3.5V
V IN = 12V
50
V LED = 3.5V
V IN = 12V
0
0.0
0.3
0.5
0.8
1.0
270
0.0
0.3
0.5
0.8
1.0
0
0.0
0.3
0.5
0.8
1.0
SWITCH CURRENT (A)
September 2010
SWITCH CURRENT (A)
6
SWITCH CURRENT (A)
M9999-091710-A
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