MIC39150 Datasheet, PDF (5/12 Pages) Micrel Semiconductor – 1.5A Low-Voltage Low-Dropout Regulator

MIC39150/39151
Typical Characteristics
Power Supply
Rejection Ratio
60
V_IN = 3.3V
50
V_OUT = 2.5V
40
30
20
I_LOAD = 1.5A
10 ^COUT ^{= 10µF}
C_IN = 0
0
1E1+01 11E0+02 1E1+k3 11E0+k4 11E00+k5 11EM+6
FREQUENCY (Hz)
Dropout Voltage
vs. Temperature
600
500
400 ^{VOUT = 1.8V}
300
V_OUT = 2.5V
200
100
I_LOAD = 1.5A
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
Ground Current
vs. Supply Voltage
1.8
1.6
1.4
1.2
I_LOAD = 100mA
1.0
0.8
0.6
0.4
0.2
0.0
0
I_LOAD = 10mA
2 4 6 8 10 12
SUPPLY VOLTAGE (V)
Ground Current
vs. Temperature
8
7
6
V_OUT = 2.5V
5
4 V_OUT = 1.8V
3
2
1
I_LOAD = 750mA
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
May 2000
Power Supply
Rejection Ratio
50
40 _{VIN = 3.3V}
V_OUT = 2.5V
30
20
I_LOAD = 1.5A
10
C_OUT = 47µF
C_IN = 0
0
1E1+01 11E0+02 1E1+k3 11E0+k4 11E00+k5 11EM+6
FREQUENCY (Hz)
Dropout Characteristics
2.8
2.6
2.4 ^{ILOAD = 100mA}
2.2
2.0
1.8
1.6
I_LOAD = 1.5A
1.4
I_LOAD = 750mA
1.2
INPUT VOLTAGE (V)
Ground Current
vs. Supply Voltage
65
60
55
50
45
I_LOAD = 1500mA
40
35
30
I_LOAD = 1000mA
25
20
15
I_LOAD = 750mA
10
5
0
0 2 4 6 8 10 12
SUPPLY VOLTAGE (V)
Ground Current
vs. Temperature
25
20
15
V_OUT = 1.8V
10
5
V_OUT = 2.5V
I_LOAD = 1.5A
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
5
Micrel
Dropout Voltage
vs. Output Current
500
400
300 ^V_OUT ^{= 1.8V}
200
V_OUT = 2.5V
100
0
0
500
1000
1500
OUTPUT CURRENT (mA)
Ground Current
vs. Output Current
25
20
15
10
V_OUT = 1.8V
5
V_OUT = 2.5V
0
0 250 500 750 1000 1250 1500
OUTPUT CURRENT (mA)
Ground Current
vs. Temperature
0.36
0.35
0.34
0.33
V_OUT = 1.8V
0.32 _{VOUT = 2.5V}
0.31
I_LOAD = 10mA
0.30
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
Short Circuit vs.
Temperature
3.5
typical 2.5V device
3.0
2.5
typical 1.8V device
2.0
1.5
1.0
0.5
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
MIC39150/39151