MIC45208-1(2014) 查看數據表（PDF） - Micrel
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MIC45208-1 Datasheet PDF : 31 Pages
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Micrel, Inc.
Typical Characteristics
VIN Operating Supply Current
vs. Temperature (MIC45208-1)
600
480
360
VIN = 12V
240
VOUT = 1.8V
IOUT = 0A
120
0
-50 -25 0
25 50 75 100 125
TEMPERATURE (°C)
VIN Operating Supply Current
vs. Temperature (MIC45208-2)
100
VOUT = 1.8V
IOUT = 0A
80
fSW = 600kHz
60
40
20
0
-50 -25 0 25 50 75 100 125
TEMPERATURE (°C)
MIC45208
VIN Shutdown Current
vs. Input Voltage
50
VEN = 0V
R10 = OPEN
40
30
20
10
0
4.5
8.8
13.1
17.4
21.7
26
INPUT VOLTAGE (V)
VDD Supply Voltage
vs. Temperature
10
VIN = 12V
8
VOUT = 1.8V
IOUT = 0A
6
4
2
0
-50 -25
0 25 50 75 100 125
TEMPERATURE (°C)
Enable Threshold
vs. Temperature
2.0
1.6
RISING
1.2
FALLING
0.8
0.4
VIN = 12V
VOUT = 1.8V
0.0
-50
-25 0 25 50 75
TEMPERATURE (°C)
100 125
EN Bias Current
vs. Temperature
10
VIN = 12V
8
VOUT = 1.8V
IOUT = 0A
6
4
2
0
-50 -25 0
25 50 75 100 125
TEMPERATURE (°C)
Feedback Voltage
vs. Temperature
1.1
1.0
0.9
0.8
VIN = 12V
0.7
VOUT = 1.8V
IOUT = 0A
0.6
0.5
-50 -25
0 25 50 75 100 125
TEMPERATURE (°C)
Output Voltage
vs. Temperature
2.1
2.0
1.9
1.8
1.7
1.6
1.5
-50
VIN = 12V
VOUT= 1.8V
IOUT = 0A
-25 0 25 50 75 100 125
TEMPERATURE (°C)
Switching Frequency
vs. Temperature
900
800
700
600
500
VIN = 12V
400
VOUT = 1.8V
IOUT = 2A
300
-50 -25 0
25 50 75 100 125
TEMPERATURE (°C)
May 29, 2014
6
Revision 1.2
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