MIC49150
Micrel
Typical Characteristics
Power Supply Rejection Ratio
(Input Supply)
80
70
60
Power Supply Rejection Ratio
(Bias Supply)
80
70
60
PSRR (dB)
DROPOUT VOLTAGE (mV)
300
250
200
150
100
50
Dropout Voltage
(Input Supply)
PSRR (dB)
50
40
30
20
10
V
BIAS
= 3.3V
V
IN
= 1.8V
V
OUT
= 1.0V
I
OUT
= 1.5A
C
OUT
= 1µF ceramic
0.1
1
10
100
FREQUENCY (kHz)
1000
50
40
30
20
10
V
BIAS
= 3.3V
V
IN
= 1.8V
V
OUT
= 1.0V
I
OUT
= 1.5A
C
OUT
= 1µF ceramic
0.1
1
10
100
FREQUENCY (kHz)
1000
V
BIAS
= 5V
V
OUT
= 1.0V
1000
1200
1400
1400
OUTPUT CURRENT (mA)
Dropout Voltage
(Bias Supply)
1.8
DROPOUT VOLTAGE (mV)
Dropout Voltage
vs. Temperature
(Input Supply)
400
DROPOUT VOLTAGE (V)
Dropout Voltage
vs. Temperature
(Bias Supply)
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
V
IN
= 2.5V
I
OUT
= 1.5A
V
OUT
= 1.5V
DROPOUT VOLTAGE (V)
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
V
IN
= 2.5V
V
OUT
= 1.5V
350
300
250
200
150
100
50
V
BIAS
= 5V
I
OUT
= 1.5A
V
OUT
= 1.5V
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE(°C)
0.2
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE(°C)
0
1000
1200
1400
OUTPUT CURRENT (mA)
Dropout Characteristics
(Input Voltage)
1.6
1.6
OUTPUT VOLTAGE (V)
1600
200
400
600
800
Dropout Characteristics
(Bias Voltage)
1.505
OUTPUT VOLTAGE (V)
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
1
V
IN
= 2.5V
V
OUT
= 1.5V
2
3
4
5
6
BIAS VOLTAGE (V)
7
I
OUT
= 1.5A
I
OUT
= 10mA
Load Regulation
1.504
1.503
1.502
1.501
1.500
1.499
1.498
1.497
1.496
1.495
V
BIAS
= 5V
V
IN
= 2.5V
1000
1200
1600
200
400
600
800
OUTPUT VOLTAGE (V)
1.4
1.2
1.0
0.8
0.6
0.4
I
OUT
= 10mA
I
OUT
= 1.5A
V
BIAS
= 5V
0.2 V
OUT
= 1.5V
0
0
0.5
1
1.5
2
INPUT VOLTAGE (V)
2.5
0
OUTPUT CURRENT (mA)
Maximum Bias Current
vs. Bias Voltage
300
BIAS CURRENT (mA)
300
250
200
150
100
50
0
3
*Note: Maximum bias current is bias
current with input in dropout
Maximum Bias Current
vs. Temperature
250
200
150
100
50
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE(°C)
V
BIAS
= 5V
V
ADJ
= 0V
V
IN
= 2.5V
45
40
BIAS CURRENT (mA)
35
Bias Current
vs. Temperature
V
IN
= 2.5V
V
OUT
= 1.5V
V
BIAS
= 5V
I
OUT
= 1500mA
BIAS CURRENT (mA)
V
ADJ
= 0V
I
OUT
= 1.5A
V
IN
= 2.5V
30 I
= 750mA
OUT
25
20
15
10
5
I
OUT
= 100mA
3.5
4 4.5 5 5.5 6
BIAS VOLTAGE (V)
6.5
I
OUT
= 10mA
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
January 2002
5
MIC49150
1600
200
400
600
800
0
0.01
0
0.01
0
0
MICREL [ MICREL SEMICONDUCTOR ]
