MIC5280 データシートの表示（PDF） - Micrel
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MIC5280 Datasheet PDF : 14 Pages
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Micrel, Inc.
Typical Characteristics
Power Supply
Rejection Ratio
120
100µA
100
80
10mA
60
25mA
1mA
40
20
010
100 1000 10000 100000
FREQUENCY (Hz)
1.225
Feedback Voltage
vs. Temperature
1.224
1.223
1.222
1.221
Load=100µA
1.220
1.219
Load=25mA
1.218
1.217
1.216
1.21-540 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
Dropout Voltage
vs. Output Current
1.4
1.2
1.0
0.8
0.6
0.4
0.2
00
VIN = 4.5V
CIN = 0.18µF
COUT = 2.2µF
5 10 15 20 25
OUTPUT CURRENT (mA)
Current Limit
vs. Temperature
80
77
74
71
VIN=12V
68
65
62
59
VIN=4.5V
56
53
5-040 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
January 2009
3.155
3.154
3.153
3.152
3.151
3.150
3.149
3.148
3.147
3.146
3.1450
Output Voltage
vs. Input Voltage
VOUT = 3.15V
CIN = 0.18µF
COUT = 2.2µF
Load = 100µA
20 40 60 80 100 120
INPUT VOLTAGE (V)
Ground Current
vs. Output Current
300
250
200
150
100
50
00
–40°C
120°C
25°C
VIN = 12V
VOUT = 5V
CIN = 0.18µF
COUT = 2.2µF
5 10 15 20 25
OUTPUT CURRENT (mA)
Dropout Voltage
vs. Temperature
1.2
1.1
Load=25mA
1.0
0.9
0.8
0.7
Load=10mA
0.6
0.5
0.4
0.3
Load=100µA
0.2
0.1
-040 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
Adjust Pin Current
vs. Temperature
3.40
3.37
3.34
3.31
3.28
3.25
3.22
3.19
3.16
3.13
3.1-040 -20
0
20 40
VEN = 12V
60 80 100 120
TEMPERATURE (°C)
5
MIC5280
5.010
5.008
5.006
5.004
5.002
5.000
4.998
4.996
4.994
4.992
4.990
0
Output Voltage
vs. Load Current
EN = VBYP
VIN = 12V
VOUT = 5V
CIN = 0.18µF
COUT = 2.2µF
5 10 15 20 25
LOAD CURRENT (mA)
Ground Current
vs. Temperature
35
VIN=120V
32
VIN=12V
29
26
VIN=4.5V
23
EN = VIN
Load = 100µA
2-040 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
Current Limit
vs. Input Voltage
79
76
73
70
67
64
61
58
VOUT = 3.15V
COUT = 2.2µF
55
0 20 40 60 80 100 120
INPUT VOLTAGE (V)
Enable Threshold
vs. Temperature
1.1
Load = 100µA
1.0
0.9
0.8
0.7
0.6
0.5
0.-440 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
M9999-012209-A
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