NCP1651
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9
Typical Performance Characteristics
(Test circuits are located in the document TND308/D)
25
- -25
- -50
Figure 10. UVLO versus Temperature
TEMPERATURE (癈)
11.2
9.5
75
100
9.8
10.2
10.5
TURN- -ON
Figure 11. FB/SD Clamp Voltage versus V
CC
4
2
0
V
CC
(V)
1.5
0
6
0.5
1.0
8
10
12
0
50
125
10.8
TURN- -OFF
5
2
1
0
Figure 12. Reference Multiplier Gain
AC INPUT (V)
5
0
3
0.5
1
1.5
3.5
1.6 V
Figure 13. V
CC
Cap Charge Time
10,000
10
1
CHARGE TIME (ms)
1000
1
100
10
1000
2
2.5
3
4
4
4.5
2.0 V
1.8 V
2.5 V
FB/SD = 3.0 V
100
1000
10
1
Figure 14. C
T
versus Frequency
FREQUENCY (kHz)
100 k
100
100
Figure 15. Ramp Peak versus Frequency
300
50
0
FREQUENCY (kHz)
4.40
3.95
150
4.15
1000
10 k
100
4.10
200
250
4.00
4.05
4.30
4.25
4.20
4.35
NOTE: Ramp Valley
Voltage is Zero for
All Frequencies