MIC3775 Datasheet, PDF (5/14 Pages) Micrel Semiconductor – 750mA UCap Low-Voltage Low-Dropout Regulator

MIC3775
Typical Characteristics
Power Supply
Rejection Ratio
80
70
VIN = 5V
VOUT = 3.3V
60
50
40
30 _IOUT=750mA
20 COUT =10µF
10 ^{CIN =0}
0
0.01 0.1 1 10 100 1000
FREQUENCY (KHz)
Power Supply
Rejection Ratio
80
70
VIN =3.3V
VOUT =2.5V
60
50
40
30 _IOUT=750mA
20 COUT =47µF
10 ^{CIN =0}
0
0.01 0.1 1 10 100 1000
FREQUENCY (KHz)
Dropout Characteristics
(1.5V)
1.6
1.4
1.2
1.0
0.8
10mA Load
0.6
0.4
750mA Load
0.2
0
1.5 1.7 1.9 2.1 2.3 2.5
INPUT VOLTAGE (V)
Dropout Characteristics
(3.3V)
4.0
3.5
3.0
2.5
2.0
750mA Load
1.5
10mA Load
1.0
0.5
0
1.5 2 2.5 3 3.5 4 4.5
INPUT VOLTAGE (V)
March 2003
Power Supply
Rejection Ratio
80
70
VIN =5V
VOUT =3.3V
60
50
40
30 _IOUT=750mA
20 COUT =47µF
10 ^{CIN =0}
0
0.01 0.1 1 10 100 1000
FREQUENCY (KHz)
Dropout
vs. Output Current
300
250 _1.8VOUT
200
150
3.3V_OUT
100 _2.5VOUT
50
0
0
0.25
0.5
0.75
OUTPUT CURRENT (A)
Dropout Characteristics
(1.8V)
2.0
1.8
1.6
1.4
750mA Load
1.2
1.0
10mA Load
0.8
0.6
0.4
0.2
0
1.5
2
2.5
3
INPUT VOLTAGE (V)
Ground Current
vs. Output Current
7
6
2.5VOUT
5
4
3
2
1
3.3VOUT
0
0
0.25
0.5
0.75
OUTPUT CURRENT (A)
5
Micrel
Power Supply
Rejection Ratio
80
70
VIN =3.3V
VOUT =2.5V
60
50
40
30 _IOUT=750mA
20 COUT =10µF
10 ^{CIN =0}
0
0.01 0.1 1
10 100 1000
FREQUENCY (KHz)
Dropout
vs. Temperature
400
350
300
250
2.5VOUT
200
150
100
50
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
Dropout Characteristics
(2.5V)
3.0
2.5
2.0
750mA Load
1.5
1.0
10mA Load
0.5
0
1.5
2
2.5
3
3.5
INPUT VOLTAGE (V)
Ground Current
vs. Supply Voltage (1.5V)
0.8
0.7
0.6
100mA
0.5
0.4
0.3
0.2
0.1
10mA
0
0123456
INPUT VOLTAGE (V)
MIC3775