SC1548
POWER MANAGEMENT
Typical Characteristics
(Cont.)
(1)
Output Short Circuit Glitch Immunity
vs. Junction Temperature
8
Short Circuit Glitch Immunity (ms)
7
6
5
t
r
(µs)
1200
1000
800
600
400
200
V
IN
= 12V
V
EN
switched from 0V to 3.3V
Two representative parts shown
0
25
50
T
J
(°C)
75
100
125
Drive Pin Rise Time vs.
Junction Temperature
V
IN
= 12V
V
EN
= 3.3V
R
OUT
of 0Ω applied to output
Two representative parts shown
4
3
2
1
0
0
25
50
T
J
(°C)
75
100
125
0
Drive Pin Fall Time vs.
Junction Temperature
1000
900
800
700
600
t
f
(µs)
500
400
300
200
100
0
0
25
50
T
J
(°C)
75
100
125
-40
-60
f (Hz)
20
0
-20
V
IN
= 12V
V
EN
switched from 3.3V to 0V
Two representative parts shown
80
60
40
SC1548CSK-1.8 Small Signal Gain
and Phase Shift vs. Frequency
0
I
OUT
= 1.8A
-45
-90
Gain
Phase (°)
Phase (°)
-135
-180
-225
-270
Phase
1.00E+03
1.00E+04
Gain (dB)
1.00E+05
-315
-80
1.00E+02
-360
1.00E+06
SC1548CSK-1.5 Small Signal Gain
and Phase Shift vs. Frequency
80
80
I
OUT
= 1.8A
60
40
Gain
Gain (dB)
Phase (°)
20
0
-20
-40
-60
-80
1.00E+02
Phase
-135
-180
-225
-270
-315
-45
40
-90
Gain (dB)
20
0
-20
0
60
SC1548CSK Small Signal Gain
and Phase Shift vs. Frequency
0
V
OUT
= 2V
I
OUT
= 1.8A
-45
-90
Gain
-135
-180
-225
Phase
-40
-60
-80
1.00E+02
-270
-315
-360
1.00E+06
1.00E+03
1.00E+04
f (Hz)
1.00E+05
-360
1.00E+06
1.00E+03
1.00E+04
f (Hz)
1.00E+05
ã
2001 Semtech Corp.
8
www.semtech.com
SEMTECH [ SEMTECH CORPORATION ]
