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SC1454XIMSTR Datasheet(PDF) 11 Page - Semtech Corporation

Part # SC1454XIMSTR
Description  Dual 150mA Ultra Low Dropout, Low Noise Regulator
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC1454XIMSTR Datasheet(HTML) 11 Page - Semtech Corporation

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 2005 Semtech Corp.
www.semtech.com
SC1454
POWER MANAGEMENT
Typical Characteristics (Cont.)
Output Spectral Noise Density vs. Frequency
vs. Output Capacitance
Output Spectral Noise Density vs. Frequency
vs. Bypass Capacitance
Output Spectral Noise Density vs. Frequency
vs. Output Current
PSRR vs. Frequency vs. Output Voltage
(C
BYP = 10nF)
PSRR vs. Frequency vs. Output Voltage
(C
BYP = 100nF)
0
10
20
30
40
50
60
70
80
90
100
0.01
0.1
1
10
100
1000
f (kHz)
VIN = VOUT + 1V
CIN = COUT = 1µF
CBYP = 10nF
IOUT = 1mA
TJ = 25°C
Top to bottom:
VOUT = 1.8V
VOUT = 2.5V
VOUT = 2.8V
VOUT = 3.0V
VOUT = 3.3V
0
10
20
30
40
50
60
70
80
90
100
0.01
0.1
1
10
100
1000
f (kHz)
VIN = VOUT + 1V
CIN = COUT = 1µF
CBYP = 100nF
IOUT = 1mA
TJ = 25°C
Top to bottom:
VOUT = 1.8V
VOUT = 2.5V
VOUT = 2.8V
VOUT = 3.0V
VOUT = 3.3V
0.001
0.01
0.1
1
10
0.01
0.1
1
10
100
1000
f (kHz)
VOUT = 1.8V
VIN = 2.8V
IOUT = 50mA
CBYP = 10nF
CIN = 1µF
TJ = 25°C
Left to right:
COUT = 44µF
COUT = 22µF
COUT = 10µF
COUT = 2.2µF
0.01
0.1
1
10
0.01
0.1
1
10
100
1000
f (kHz)
CBYP = 100pF
CBYP = 1nF
CBYP = 10nF
CBYP = 100nF
CBYP = 1µF
VOUT = 1.8V
VIN = 2.8V
IOUT = 50mA
CIN = 1µF
COUT = 2.2µF
TJ = 25°C
0.001
0.010
0.100
1.000
10.000
0.01
0.1
1
10
100
1000
f (kHz)
VOUT = 1.8V
VIN = 2.8V
CIN = 1µF
CBYP = 10nF
COUT = 2.2µF
TJ = 25°C
Top to bottom:
IOUT = 150mA
IOUT = 100mA
IOUT = 50mA
IOUT = 1mA


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