MC44603A 데이터 시트보기 (PDF) - ON Semiconductor
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MC44603A Datasheet PDF : 22 Pages
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MC44603A
3.2
100
5.0
3.1
80
Printed circuit board heatsink example
ÉÉÉÉÉÉÉÉÉÉ L
2.0 oz
Copper
4.0
60
RqJA
L
3.0 mm 3.0
Graphs represent symmetrical layout
3.0
40
2.0
2.9
VCC = 12 V
Rref = 10 k
20
PD(max) for TA = 70°C
1.0
CT = 820 pF
2.8
−50
−25
0
25
50
75
TA, AMBIENT TEMPERATURE (°C)
Figure 14. Current Sense Gain
versus Temperature
0
0
100
0
10
20
30
40
50
L, LENGTH OF COPPER (mm)
Figure 15. Thermal Resistance and Maximum
Power Dissipation versus P.C.B. Copper Length
140
120
100
VCC = 12 V
Rref = 10 k
CT = 820 pF
80
−50
−25
0
25
50
75
100
TA, AMBIENT TEMPERATURE (°C)
Figure 16. Propagation Delay Current Sense
Input to Output versus Temperature
0.35
0.30
0.25
0.20
0.15
0.10
Rref = 10 k
CT = 820 pF
0.05
0
0 2.0 4.0
6.0 8.0
10
12 14
VCC, SUPPLY VOLTAGE (V)
Figure 17. Startup Current versus VCC
16
14
12
10
8.0
6.0 TA = 25°C
Rref = 10 k
4.0 CT = 820 pF
VFB = 0 V
2.0 VCS = 0 V
0
2.0 4.0 6.0 8.0
10
12
14
16
VCC, SUPPLY VOLTAGE (V)
Figure 18. Supply Current versus
Supply Voltage
21.5
21.0
20.5
20.0
19.5
ICC = 25 mA
19.0
−50
−25
0
25
50
75
100
TA, AMBIENT TEMPERATURE (°C)
Figure 19. Power Supply Zener Voltage
versus Temperature
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