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MIC3975 Datasheet(PDF) 5 Page - Micrel Semiconductor

Part # MIC3975
Description  750mA UCap Low-Voltage Low-Dropout Regulator
PDF  12 Pages
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC3975 Datasheet(HTML) 5 Page - Micrel Semiconductor

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February 2003
5
MIC3975
MIC3975
Micrel
Typical Characteristics
0
20
40
60
80
1E+1 1E+2 1E+3 1E+4 1E+5 1E+6
FREQUENCY (Hz)
Power Supply
Rejection Ratio
I
OUT = 750mA
C
OUT = 10µF
C
IN = 0
V
IN = 5V
V
OUT = 3.3V
10
100
1k
10k
100k
1M
0
20
40
60
80
1E+1 1E+2 1E+3 1E+4 1E+5 1E+6
FREQUENCY (Hz)
Power Supply
Rejection Ratio
I
OUT = 750mA
C
OUT = 47µF
C
IN = 0
V
IN = 5V
V
OUT = 3.3V
10
100
1k
10k
100k
1M
0
20
40
60
80
1E+1 1E+2 1E+3 1E+4 1E+5 1E+6
FREQUENCY (Hz)
Power Supply
Rejection Ratio
I
OUT = 750mA
C
OUT = 10µF
C
IN = 0
V
IN = 3.3V
V
OUT = 2.5V
10
100
1k
10k
100k
1M
0
20
40
60
80
1E+1 1E+2 1E+3 1E+4 1E+5 1E+6
FREQUENCY (Hz)
Power Supply
Rejection Ratio
I
OUT = 750mA
C
OUT = 47µF
C
IN = 0
V
IN = 3.3V
V
OUT = 2.5V
10
100
1k
10k
100k
1M
0
50
100
150
200
250
300
350
0
250
500
750
OUTPUT CURRENT (mA)
Dropout Voltage
vs. Output Current
3.3V
1.8V
2.5V
T
A
= 25
°C
200
250
300
350
400
-40 -20 0 20 40 60 80 100120140
TEMPERATURE (
°C)
Dropout Voltage
vs. Temperature
3.3V
2.5V
I
LOAD = 750mA
1.8V
1.4
1.6
1.8
2.0
2.2
2.4
2.6
2.8
2
2.3
2.6
2.9
3.2
3.5
SUPPLY VOLTAGE (V)
Dropout Characteristics
(2.5V)
ILOAD =100mA
ILOAD =750mA
2.4
2.6
2.8
3.0
3.2
3.4
3.6
2.8
3.2
3.6
4.0
4.4
SUPPLY VOLTAGE (V)
Dropout Characteristics
(3.3V)
ILOAD =100mA
ILOAD =750mA
0
1
2
3
4
5
6
7
8
9
10
0
250
500
750
OUTPUT CURRENT (mA)
Ground Current
vs. Output Current
2.5V
3.3V
1.8V
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
0
246
8
SUPPLY VOLTAGE (V)
Ground Current
vs. Supply Voltage (2.5V)
ILOAD =100mA
ILOAD =10mA
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0
2468
SUPPLY VOLTAGE (V)
Ground Current
vs. Supply Voltage (3.3V)
ILOAD =100mA
ILOAD =10mA
0
5
10
15
20
25
30
0246
SUPPLY VOLTAGE (V)
Ground Current
vs. Supply Voltage (2.5V)
ILOAD = 750mA



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