SC1548 データシートの表示（PDF） - Semtech Corporation
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SC1548 Datasheet PDF : 14 Pages
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SC1548
POWER MANAGEMENT
Typical Characteristics (Cont.)(1)
Output Short Circuit Glitch Immunity
vs. Junction Temperature
8
VIN = 12V
7
VEN = 3.3V
ROUT of 0Ω applied to output
6
Two representative parts shown
5
4
3
2
1
0
0
25
50
75
100
125
TJ (°C)
Drive Pin Fall Time vs.
Junction Temperature
1000
900
800
VIN = 12V
VEN switched from 3.3V to 0V
Two representative parts shown
700
600
500
400
300
200
100
0
0
25
50
75
100
125
TJ (°C)
SC1548CSK-1.5 Small Signal Gain
and Phase Shift vs. Frequency
80
60
40
20
0
-20
-40
-60
-80
1.00E+02
1.00E+03
1.00E+04
f (Hz)
0
IOUT = 1.8A
-45
Gain
-90
-135
-180
-225
-270
Phase -315
1.00E+05
-360
1.00E+06
Drive Pin Rise Time vs.
Junction Temperature
1200
1000
800
600
400
200 VIN = 12V
VEN switched from 0V to 3.3V
Two representative parts shown
0
0
25
50
75
TJ (°C)
100
125
SC1548CSK-1.8 Small Signal Gain
and Phase Shift vs. Frequency
80
0
IOUT = 1.8A
60
-45
40
-90
Gain
20
-135
0
-180
-20
-225
-40
-270
-60
-80
1.00E+02
1.00E+03
1.00E+04
Gain (dB)
-315
Phase
-360
1.00E+05
1.00E+06
SC1548CSK Small Signal Gain
and Phase Shift vs. Frequency
80
0
VOUT = 2V
60
IOUT = 1.8A -45
40
-90
Gain
20
-135
0
-180
-20
-225
Phase
-40
-270
-60
-315
-80
1.00E+02
1.00E+03
1.00E+04
f (Hz)
1.00E+05
-360
1.00E+06
2004 Semtech Corp.
8
www.semtech.com
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