MIC37100/37101/37102
Micrel
Typical Characteristics
Power Supply
Rejection Ratio
Power Supply
Rejection Ratio
Power Supply
Rejection Ratio
80
80
70
60
50
40
30
20
10
0
80
70
60
50
40
30
20
10
0
VIN = 3.3V
VIN = 5V
VIN = 5V
VOUT = 3.3V
70
VOUT = 2.5V
VOUT = 3.3V
60
50
40
30
20
10
0
IOUT = 1000mA
COUT = 10µF
IOUT = 1000mA
COUT = 10µF
CIN = 0
IOUT = 1000mA
COUT = 47µF
CIN = 0
CIN = 0
0.01 0.1
1
10
100 1000
0.01 0.1
1
10
100 1000
0.01 0.1
1
10
100 1000
FREQUENCY (KHz)
FREQUENCY (KHz)
FREQUENCY (KHz)
Dropout
vs. Output Current
Dropout
vs. Temperature
Power Supply
Rejection Ratio
350
300
250
200
150
100
50
450
400
350
300
250
200
150
100
50
80
70
60
50
40
30
20
10
0
VIN = 3.3V
2.5VOUT
VOUT = 2.5V
2.5V
OUT
3.3VOUT
IOUT = 1000mA
OUT = 47µF
CIN = 0
C
0
0
0
0.25
0.5
0.75
1
-40 -20
0
20 40 60 80 100 120
0.01 0.1
1
10
100 1000
OUTPUT CURRENT (A)
TEMPERATURE (°C)
FREQUENCY (KHz)
Dropout Characteristics
(2.5V)
Dropout Characteristics
(1.5V)
Dropout Characteristics
(1.8V)
3.0
2.5
2.0
1.5
1.0
0.5
0
1.6
1.4
1.2
1
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
10mA Load
10mA Load
10mA Load
0.8
0.6
0.4
0.2
0
1000mA Load
1000mA Load
1000mA Load
1.5
2
2.5
3
3.5
1.5
1.7
1.9
2.1
2.3
2.5
1.5 1.7 1.9 2.1 2.3 2.5 2.7
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
Ground Current
vs. Output Current
Dropout Characteristics
(3.3V)
Ground Current
vs. Supply Voltage (1.5V)
12
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
10mA Load
10
8
100mA
6
1000mA Load
4
1.5V
3.3V
OUT
OUT
10mA
2
0
0
0.25
0.5
0.75
1
1.5
2
2.5
3
3.5
4
0
1
2
3
4
5
6
OUTPUT CURRENT (A)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
M9999-091604
6
September 2004
MICREL [ MICREL SEMICONDUCTOR ]
