TOP264-271
Typical Performance Characteristics (cont.)
6
5.5
5
4.5
4
3.5
3
2.5
2
0
100 200 300 400 500
VOLTAGE-MONITOR Pin Current (µA)
Figure 42. VOLTAGE-MONITOR Pin vs. Current.
1.2
1.0
0.8
0.6
0.4
0.2
0
-50 -25 0 25 50 75 100 125 150
Junction Temperature (°C)
Figure 44. Control Current Out at 0% Duty Cycle vs. Temperature.
5
4
3
Scaling Factors:
TOP271 1.62
2
TOP270 1.42
TOP269 1.17
TOP268 1.00
TOP267 0.85
1
TOP266 0.61
TOP265 0.42
TCASE = 25 °C TOP264 0.32
TCASE = 100 °C
0
0 2 4 6 8 10 12 14 16 18 20
Drain Voltage (V)
Figure 46. Output Characteristics.
32
Rev. B 03/10
1.6
VX = 1.354 - 1147.5 × IX + 1.759 × 106 ×
1.4 (IX)2 with -180 µA < IX < -25 µA
1.2
1.0
0.8
0.6
0.4
0.2
0
-200 -150 -100
-50
0
EXTERNAL CURRENT LIMIT Pin Current (µA)
Figure 43. EXTERNAL CURRENT LIMIT Pin Voltage vs. Current.
1.2
1.0
0.8
0.6
0.4
0.2
0
-50 -25 0 25 50 75 100 125 150
Junction Temperature (°C)
Figure 45. Maximum Duty Cycle Reduction Onset Threshold
Current vs. Temperature.
1
VC = 5 V
0.5
0
-0.5
-1
-1.5
-2
-2.5
0
20 40 60 80 100
Drain Pin Voltage (V)
Figure 47. IC vs. DRAIN Voltage.
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