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3
DSN17 SERIES BLOCK DIAGRAM
+ OUTPUT
+ OUTPUT
– OUTPUT
– OUTPUT
– INPUT
+ INPUT
+ INPUT
2
3
8
4
– INPUT
5
ON/OFF
1
6
9
7
HIGH EFFICIENCY
CURRENT MODE
STEP DOWN
REGULATOR
Typical Performance: (Tc=25°C, Vin=Nom VDC, Rated Load)
95
90
50% FULL LOAD
100% FULL LOAD
80
75
85
70
6
7
8
9
10
11
12
13
14
15
3.3 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE
LINE INPUT (VOLTS)
E
3.5
3.0
2.0
2.5
1.0
1.5
0.5
0.0
0
8
4
100% LOAD
50% LOAD
6
2
14
10
12
16
5.0 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE
LINE INPUT (VOLTS)
I
95
90
50% FULL LOAD
100% FULL LOAD
80
75
85
70
4.0
4.5
5.0
5.5
6.0
3.3 VOLT EFFICIENCY Vs. LINE INPUT VOLTAGE
LINE INPUT (VOLTS)
E
3.5
3.0
2.0
2.5
1.0
1.5
0.5
0.0
0
3
4
100% LOAD
50% LOAD
1
2
5
6
3.3 VOLT INPUT CURRENT Vs. LINE INPUT VOLTAGE
LINE INPUT (VOLTS)
I
95
90
80
75
85
70
0
40
30
20
10
50
60
70
80
90 100
3.3 VOLT EFFICIENCY Vs. LOAD
LOAD (%)
E
DSN17 SERIES – SINGLE OUTPUT
95
90
80
75
85
70
0
40
30
20
10
50
60
70
80
90 100
5.0 VOLT EFFICIENCY Vs. LOAD
LOAD (%)
E
50
0
5
10
15
20
60
70
80
90
40
OUTPUT POWER DERATING
AMBIENT TEMPERATURE
P
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