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MIC2940 Datasheet(PDF) 5 Page - Micrel Semiconductor

Part # MIC2940
Description  1.25A Low-Dropout Voltage Regulator Preliminary Information
PDF  8 Pages
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC2940 Datasheet(HTML) 5 Page - Micrel Semiconductor

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MIC2940A/2941A
Micrel
June 1999
5
MIC2940A/2941A
Typical Characteristics
0
100
200
300
400
500
0.00
0.25
0.50
0.75
1.00
1.25
OUTPUT CURRENT (A)
Dropout Voltage
vs. Output Current
0
200
400
600
800
1000
-60 -30
0
30
60
90 120 150
TEMPERATURE (
°C)
Dropout Voltage
vs. Temperature
I
LOAD = 1.25A
0
1
2
3
4
5
6
01
234
56
INPUT VOLTAGE (V)
Dropout
Characteristics
I
LOAD = 5mA
I
LOAD = 1.25A
0.1
1
10
40
1
10
100
1000
10000
OUTPUT CURRENT (mA)
Ground Current
vs. Output Current
10A
0
100
200
300
400
0
1234567
8
SUPPLY VOLTAGE (V)
Ground Current
vs. Supply Voltage
FIXED 5V
I
LOAD = 5mA
0
10
20
30
40
50
024
68
10
INPUT VOLTAGE (V)
Ground Current
vs. Supply Voltage
FIXED 3.3V DEVICE
I
LOAD = 1.25A
0.00
0.10
0.20
0.30
0.40
-60 -30
0
30
60
90 120 150
TEMPERATURE (
°C)
Ground Current
vs. Temperature
I
LOAD = 5mA
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
-60 -30
0
30
60
90 120 150
TEMPERATURE (
°C)
Ground Current
vs. Temperature
I
LOAD = 100mA
0
10
20
30
40
50
-60 -30
0
30
60
90 120 150
TEMPERATURE (
°C)
Ground Current
vs. Temperature
I
LOAD = 1.25A
3.20
3.22
3.24
3.26
3.28
3.30
3.32
3.34
3.36
3.38
3.40
-60 -30
0
30
60
90 120 150
TEMPERATURE (
°C)
Fixed 3.3V Output Voltage
vs. Temperature
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
-60 -30
0
30
60
90 120 150
TEMPERATURE (
°C)
Short Circuit and Maximum
Current vs. Temperature
V
OUT = VNOMINAL – 0.5V
V
OUT = 0V
FIXED 3.3V
VERSION
3 SAMPLES
-200
0
200
400
600
800
1000
-30
-20
-10
0
10
20
30
INPUT VOLTAGE (V)
Ground Current
vs. Input Voltage
R
LOAD = 100Ω



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