
LM2595
TYPICAL PERFORMANCE CHARACTERISTICS (Circuit of Figure
16)1.3
1.2
1.1
1.0
1.0
0.0
? 1.0
? 2.0
0.9
0.8
0.7
0.6
0.5
0.4
? 40 ° C
25 ° C
125 ° C
? 3.0
? 4.0
? 5.0
? 6.0
? 7.0
? 8.0
0.3
0
0.2
0.4
0.6
0.8
1.0
? 9.0
? 50
? 25
0
25
50
75
100
125
5.0
4.5
4.0
3.5
3.0
2.5
SWITCH CURRENT (A)
Figure 9. Switch Saturation Voltage
100
80
60
40
20
0
T J , JUNCTION TEMPERATURE ( ° C)
Figure 10. Switching Frequency
2.0
1.5
1.0
0.5
V out ' 1.23 V
I Load = 200 mA
-20
-40
-60
-80
0
-50
-25
0
25
50
75
100
125
-100
-50
-25
0
25
50
75
100
125
T J , JUNCTION TEMPERATURE ( ° C)
Figure 11. Minimum Supply Operating Voltage
95
90
85
80
12 V, 1 A
5 V, 1 A
T J , JUNCTION TEMPERATURE ( ° C)
Figure 12. Feedback Pin Current
75
3.3 V, 1 A
70
0
5
10
15
20
25
30
35
40
45
V IN , INPUT VOLTAGE (V)
Figure 13. Efficiency
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