MIC2940 Micrel Semiconductor, MIC2940 Datasheet - Page 5

• Manufacturer Part Number: MIC2940
• Description: 1.25A Low-Dropout Voltage Regulator Preliminary Information
• Manufacturer: Micrel Semiconductor

MIC2940A/2941A
Typical Characteristics
June 1999
0.40
0.30
0.20
0.10
0.00
3.40
3.38
3.36
3.34
3.32
3.30
3.28
3.26
3.24
3.22
3.20
500
400
300
200
100
0.1
40
10
0.00
0
1
-60 -30
-60 -30
1
Fixed 3.3V Output Voltage
0.25
OUTPUT CURRENT (A)
OUTPUT CURRENT (mA)
vs. Output Current
vs. Output Current
TEMPERATURE ( C)
TEMPERATURE ( C)
Dropout Voltage
vs. Temperature
vs. Temperature
Ground Current
Ground Current
10
0
0
0.50
I
LOAD
30 60 90 120 150
30 60 90 120 150
100
0.75
= 5mA
1000
1.00
10000
1.25
10A
1000
800
600
400
200
400
300
200
100
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0
0
-60 -30
-60 -30
-60 -30
0
Short Circuit and Maximum
Current vs. Temperature
1
V
vs. Supply Voltage
SUPPLY VOLTAGE (V)
OUT
TEMPERATURE ( C)
TEMPERATURE ( C)
TEMPERATURE ( C)
Dropout Voltage
vs. Temperature
vs. Temperature
Ground Current
Ground Current
2
0
0
0
= V
I
LOAD
I
3
LOAD
NOMINAL
3 SAMPLES
30 60 90 120 150
30 60 90 120 150
FIXED 3.3V
30 60 90 120 150
FIXED 5V
I
5
V
LOAD
VERSION
OUT
4
= 100mA
= 1.25A
= 5mA
= 0V
5
– 0.5V
6
7
8
1000
-200
800
600
400
200
50
40
30
20
10
50
40
30
20
10
6
5
4
3
2
1
0
0
0
0
-60 -30
-30 -20
0
0
R
LOAD
1
vs. Supply Voltage
I
INPUT VOLTAGE (V)
LOAD
INPUT VOLTAGE (V)
2
TEMPERATURE ( C)
INPUT VOLTAGE (V)
vs. Input Voltage
vs. Temperature
Ground Current
Ground Current
Ground Current
Characteristics
= 100
0
-10
FIXED 3.3V DEVICE
I
2
LOAD
= 5mA
Dropout
4
30 60 90 120 150
I
I
LOAD
LOAD
= 1.25A
3
0
MIC2940A/2941A
= 1.25A
6
= 1.25A
10
4
8
20
5
10
30
6
Micrel