SC1409 데이터 시트보기 (PDF) - Semtech Corporation
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SC1409 Datasheet PDF : 8 Pages
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1 A Synchronous Switching Regulator SC1409
June 28, 2000
8.0
7.0
6.0
Shutdown Quiescent Current
5.0
4.0
3.0
2.0
Quiescent Current
1.0
0.0
-50
-25
0
25
50
75
Temperature (oC)
Quiescent current vs temperature
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
100
125
0.45
0.40
P-Channel (Topside)
0.35
0.30
0.25
0.20
N-Channel (Bottomside)
0.15
0.10
0.05
0.00
-50
-25
0
25
50
75
Temperature (oC)
FET RDS(ON) vs temperature
100
125
50
45
40
35
30
25
20
15
10
5
0
-50
-25
0
25
50
75
Temperature (oC)
Soft start current vs temperature
100
125
550
100
500
98
Frequency (FSET=VIN)
450
96
400
94
Max Duty Cycle
350
92
300
250
-50
-25
Frequency (FSET=GND)
0
25
50
75
100
Temperature (oC)
90
88
125
Frequency and max. duty cycle vs temperature
4.5
4.4
4.3
VIN Increasing
4.2
4.1
4.0
3.9
-50
-25
VIN Decreasing
0
25
50
75
Temperature (oC)
UVLO trip point vs temperature
100
125
1.206
1.204
1.202
1.200
1.198
1.196
-50
-25
0
25
50
75
Temperature (oC)
Reference voltage vs temperature
100
125
© 2000 SEMTECH CORP.
5
652 MITCHELL ROAD NEWBURY PARK CA 91320
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