SC1452XIMSTRT View Datasheet(PDF) - Semtech Corporation
Part Name
Description
Manufacturer
SC1452XIMSTRT Datasheet PDF : 15 Pages
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SC1452
POWER MANAGEMENT
Typical Characteristics (Cont.)
Output Spectral Noise Density vs. Frequency
vs. Bypass Capacitance
10
VOUT = 1.8V
VIN = 2.8V
IOUT = 50mA
CIN = 1µF
1
COUT = 2.2µF
TJ = 25°C
0.1
0.01
CBYP = 100pF
CBYP = 1nF
CBYP = 10nF
CBYP = 100nF
CBYP = 1µF
0.01
0.1
1
10
100
f (kHz)
PSRR vs. Frequency vs. Output Voltage
(C = 10nF)
BYP
75
70
65
60
55
50
45
40
VIN = VOUT + 1V
CIN = COUT = 1µF
35 CBYP = 10nF
30
IOUT = 1mA
TJ = 25°C
Top to bottom:
VOUT = 1.8V
VOUT = 2.5V
VOUT = 2.8V
VOUT = 3.0V
VOUT = 3.3V
25
0.01
0.1
1
10
100
f (kHz)
1000
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 = 1.8V
VIN = 2.8V
CIN = 1µF
CBYP = 10nF
COUT = 2.2µF
TJ = 25°C
0.001
0.01
0.1
1
10
100
f (kHz)
PSRR vs. Frequency vs. Output Voltage
(C = 100nF)
BYP
75
70
65
60
55
50
45
40
VIN = VOUT + 1V
CIN = COUT = 1µF
35 CBYP = 100nF
30
IOUT = 1mA
TJ = 25°C
Top to bottom:
VOUT = 1.8V
VOUT = 2.5V
VOUT = 2.8V
VOUT = 3.0V
VOUT = 3.3V
25
0.01
0.1
1
10
100
f (kHz)
1000
1000
2006 Semtech Corp.
12
www.semtech.com
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