MIC5281_11 Datasheet, PDF (7/21 Pages) Micrel Semiconductor – 120VIN, 25mA, Ultra-Low IQ, High-PSRR Linear Regulator

Micrel, Inc.
Typical Characteristics (Continued)
FB Voltage
vs. Temperature
1.31
1.30
1.29
V_IN = 12V
V_OUT = 5V
I_OUT = 5mA
1.28
1.27
1.26
1.25
1.24
-50 -25 0 25 50 75 100 125
TEMPERATURE (°C)
FB Current
vs. Temperature
2.5
V_IN = 12V
2.0
V_FB = 1.267V
I_OUT = 0
1.5
1.0
0.5
0.0
-50 -25
0
25 50 75 100 125
TEMPERATURE (°C)
Current Limit
vs. Temperature
80
75
V_IN = 12V
V_OUT = 0V
70
65
60
55
50
-50 -25
0
25
50 75 100 125
TEMPERATURE (°C)
Line Regulation
vs. Temperature
0.40
0.35
0.30
V_IN = 10V to 120V
V_OUT = 5V
I_OUT = 100µA
0.25
0.20
0.15
0.10
0.05
0.00
-50
-25 0 25 50 75 100 125
TEMPERATURE (°C)
Power Dissipation
vs. Output Current
0.20
0.18
0.16
0.14
V_IN = 12V
V_OUT = 4.5V
0.12
0.10
0.08
0.06
0.04
0.02
0.00
0
5
10
15
20
25
OUTPUT CURRENT (mA)
Case Temperature (MME)
vs. Output Current
40
38
V_IN = 12V
V_OUT = 4.5V
36
34
32
30
28
26
24
0
5
10
15
20
25
OUTPUT CURRENT (mA)
MIC5281
1.276
1.274
FB Voltage
vs. Output Current
V_IN = 12V
V_OUT = 5.0V
1.272
1.270
1.268
1.266
0
5
10
15
20
25
OUTPUT CURRENT (mA)
Load Regulation
vs. Temperature
0.30
0.28
0.26
0.24
V_IN = 12V
V_OUT = 5V
I_OUT =100µA to 25mA
0.22
0.20
0.18
0.16
0.14
0.12
0.10
-50 -25 0 25 50 75 100 125
TEMPERATURE (°C)
PSRR vs. Frequency
30
V_IN = 12V
10 V_OUT = 5V
-10 ^{IOUT = 5mA}
C_IN = None
-30 ^CPSRR ^{= 0.1µF}
C_OUT = 10µF
-50
-70
-90
-110
-130
0.01
0.1
1
10 100 1000 10000
FREQUENCY (kHz)
June 2011
7
M9999-062411-A