LM2594 Просмотр технического описания (PDF) - ON Semiconductor
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LM2594 Datasheet PDF : 25 Pages
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LM2594
TYPICAL PERFORMANCE CHARACTERISTICS (Circuit of Figure 16)
1.3
1.2
1.1
1.0
0.9 −40°C
0.8
25°C
0.7
0.6 125°C
0.5
0.4
0.3
0
0.1
0.2
0.3
0.4
0.5
SWITCH CURRENT (A)
Figure 9. Switch Saturation Voltage
1.0
0.0
−1.0
−2.0
−3.0
−4.0
−5.0
−6.0
−7.0
−8.0
−9.0
−50 −25 0
25 50 75 100 125
TJ, JUNCTION TEMPERATURE (°C)
Figure 10. Switching Frequency
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
Vout ' 1.23 V
ILoad = 100 mA
1.0
0.5
0
-50 -25
0
25
50
75
100 125
TJ, JUNCTION TEMPERATURE (°C)
Figure 11. Minimum Supply Operating Voltage
100
80
60
40
20
0
-20
-40
-60
-80
-100
-50 -25
0
25
50
75
100 125
TJ, JUNCTION TEMPERATURE (°C)
Figure 12. Feedback Pin Current
95
90
12 V, 500 mA
85
5 V, 500 mA
80
75
3.3 V, 500 mA
70
0 5 10 15 20 25 30 35 40 45
VIN, INPUT VOLTAGE (V)
Figure 13. Efficiency
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