MIC5281_11 Datasheet, PDF (6/21 Pages) Micrel Semiconductor – 120VIN, 25mA, Ultra-Low IQ, High-PSRR Linear Regulator

Micrel, Inc.
Typical Characteristics
Quiescent Supply Current
vs. Input Voltage
11.0
10.0
9.0
V_OUT = 5V
I_OUT = 0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
0
20
40
60
80
100 120
INPUT VOLTAGE (V)
Output Voltage
vs. Output Current
5.25
5.20
5.15
V_IN = 12V
V_OUT = 5V
5.10
5.05
5.00
4.95
4.90
4.85
4.80
4.75
0
5
10
15
20
25
OUTPUT CURRENT (mA)
Dropout Voltage
vs. Temperature
2.4
2.3
V_OUT = 5V
2.2
I_OUT = 25mA
2.1
2.0
1.9
1.8
1.7
1.6
1.5
1.4
-50 -25
0
25 50 75 100 125
TEMPERATURE (°C)
Quiescent Supply Current
vs. Temperature
11.0
10.0
9.0
8.0
V_IN = 12V
V_OUT = 5V
I_OUT = 0mA
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
-50 -25
0
25 50 75 100 125
TEMPERATURE (°C)
Output Voltage
vs. Temperature
5.25
5.20
5.15
5.10
V_IN = 12V
V_OUT = 5V
I_OUT = 5mA
5.05
5.00
4.95
4.90
4.85
4.80
4.75
-50 -25 0 25 50 75 100 125
TEMPERATURE (°C)
FB Voltage
vs. Input Voltage
1.31
1.30
1.29
V_OUT = 5V
I_OUT = 5mA
1.28
1.27
1.26
1.25
1.24
1.23
0
20
40
60
80
100 120
INPUT VOLTAGE (V)
MIC5281
Output Voltage
vs. Input Voltage
5.15
V_IN = 12V
5.10
V_OUT = 5V
I_OUT = 5mA
5.05
5.00
4.95
4.90
4.85
0
20
40
60
80
100 120
INPUT VOLTAGE (V)
Dropout Voltage
vs. Output Current
3.00
2.50
V_OUT = 5V
ADJUSTABLE OPTION
2.00
1.50
1.00
0.50
0.00
0
5
10
15
20
25
OUTPUT CURRENT (mA)
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
FB Current
vs. Input Voltage
V_OUT = 5V
V_FB = 1.267V
20
40
60
80
100 120
INPUT VOLTAGE (V)
June 2011
6
M9999-062411-A