MIC2940A Datasheet, PDF (5/8 Pages) Micrel Semiconductor – 1.25A Low-Dropout Voltage Regulator Preliminary Information

MIC2940A/2941A
Typical Characteristics
Dropout Voltage
vs. Output Current
500
400
300
200
100
0
0.00 0.25 0.50 0.75 1.00 1.25
OUTPUT CURRENT (A)
Ground Current
vs. Output Current
40
10
1
0.1
1
10 100 1000 11000A00
OUTPUT CURRENT (mA)
Ground Current
vs. Temperature
0.40
0.30
0.20
0.10
I_LOAD = 5mA
0.00
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
Fixed 3.3V Output Voltage
vs. Temperature
3.40
3.38
3.36
3.34
3.32
3.30
3.28
3.26
3.24
3.22
3.20
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
June 1999
Dropout Voltage
vs. Temperature
1000
800
600
400
200
I_LOAD = 1.25A
0
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
Ground Current
vs. Supply Voltage
400
300
200
100
FIXED 5V
I_LOAD = 5mA
0
012345678
SUPPLY VOLTAGE (V)
Ground Current
vs. Temperature
2.0
1.8
1.6
1.4
1.2
1.0
I_LOAD = 100mA
0.8
0.6
0.4
0.2
0.0
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
Short Circuit and Maximum
Current vs. Temperature
2.0
1.8 V_OUT = V_NOMINAL – 0.5V
1.6
1.4
1.2
1.0
0.8
V_OUT = 0V
0.6
0.4
FIXED 3.3V
VERSION
0.2
3 SAMPLES
0.0
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
5
Micrel
Dropout
Characteristics
6
5
4
I_LOAD = 5mA
3
2
I_LOAD = 1.25A
1
0
0123456
INPUT VOLTAGE (V)
Ground Current
vs. Supply Voltage
50
40
30
20
10
FIXED 3.3V DEVICE
I_LOAD = 1.25A
0
0 2 4 6 8 10
INPUT VOLTAGE (V)
Ground Current
vs. Temperature
50
40
I_LOAD = 1.25A
30
20
10
0
-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)
Ground Current
vs. Input Voltage
1000
800 ^{RLOAD = 100Ω}
600
400
200
0
-200
-30 -20 -10 0 10 20 30
INPUT VOLTAGE (V)
MIC2940A/2941A