SC1453ISK32TRT Ver la hoja de datos (PDF) - Semtech Corporation
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SC1453ISK32TRT Datasheet PDF : 14 Pages
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SC1453
POWER MANAGEMENT
Typical Characteristics (Cont.)
Output Spectral Noise Density vs. Frequency
vs. Output Voltage, C = 100µF
OUT
10
VIN = VOUT + 1V
IOUT = 1mA
CIN = 1µF
1
CBYP = 10nF
TJ = 25°C
0.1
0.01
Top to bottom:
VOUT = 3.3V
VOUT = 3.0V
VOUT = 2.8V
VOUT = 2.5V
VOUT = 1.8V
VOUT = 1.5V
0.001
0.01
0.1
1
10
f (kHz)
100
1000
Output Spectral Noise Density vs. Frequency
vs. Bypass Capacitance
10
CBYP = 1nF
CBYP = 10nF
1
CBYP = 100nF
CBYP = 1µF
0.1
0.01
VOUT = 1.5V
VIN = 2.5V
IOUT = 1mA
CIN = 1µF
COUT = 1µF
TJ = 25°C
0.001
0.01
0.1
1
10
f (kHz)
100
1000
Power Supply Rejection Ratio vs. Frequency
vs. Output Voltage, CBYP = 10nF
80
70
60
50
40
30 VIN = VOUT + 1V
20
CIN = COUT = 1µF
CBYP = 10nF
10 IOUT = 1mA
TJ = 25°C
0
0.01
0.1
Top to bottom:
VOUT = 1.5V
VOUT = 1.8V
VOUT = 2.5V
VOUT = 2.8V
VOUT = 3.0V
VOUT = 3.3V
1
10
f (kHz)
100
1000
Output Spectral Noise Density vs. Frequency
vs. Output Capacitance
10
1
0.1
0.01
VOUT = 1.5V
VIN = 2.5V
IOUT = 1mA
CBYP = 10nF
CIN = 1µF
TJ = 25°C
0.001
0.01
0.1
Left to right:
COUT = 100µF
COUT = 44µF
COUT = 22µF
COUT = 10µF
COUT = 1µF
1
10
f (kHz)
100
1000
Output Spectral Noise Density vs. Frequency
vs. Output Current
10
Top to bottom:
IOUT = 150mA
IOUT = 100mA
1
IOUT = 50mA
IOUT = 1mA
0.1
0.01
VOUT = 1.5V
VIN = 2.5V
CIN = 1µF
CBYP = 10nF
COUT = 1µF
TJ = 25°C
0.001
0.01
0.1
1
10
f (kHz)
100
1000
Power Supply Rejection Ratio vs. Frequency
vs. Output Voltage, CBYP = 100nF
80
70
60
50
40
30 VIN = VOUT + 1V
20 CIN = COUT = 1µF
CBYP = 100nF
10 IOUT = 1mA
TJ = 25°C
0
0.01
0.1
Top to bottom:
VOUT = 1.5V
VOUT = 2.5V
VOUT = 1.8V
VOUT = 2.8V
VOUT = 3.0V
VOUT = 3.3V
1
10
f (kHz)
100
1000
2006 Semtech Corp.
10
www.semtech.com
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