TNY375-380
VEN
CLOCK
D MAX
I DRAIN
V DRAIN
200
100
V
DC-INPUT
0
10
5
V
BYPASS
0
400
200
V
DRAIN
0
0
1
2
Time (ms)
Figure 11. Power-up Without Optional External UV Resistor Connected
to EN/UV Pin.
Figure 9. Operation at Very Light Load (fOSC 132 kHz).
PI-4541-042507
200
100
V
DC-INPUT
0
10
5
V
BYPASS
0
400
200
V
DRAIN
0
0
1
2
Time (ms)
Figure 10. Power-up With Optional External UV Resistor (4 MW) Connected
to EN/UV Pin.
200
V
100
DC-INPUT
0
400
300
200
V
DRAIN
100
0
0
.5
1
Time (s)
Figure 12. Normal Power-down Timing (Without UV Resistor).
200
100
V
DC-INPUT
0
400
300
200
V
DRAIN
100
0
0
2.5
5
Time (s)
Figure 13. Slow Power-down Timing With Optional External (4 MW) UV Resistor
Connected to EN/UV Pin.
Rev. A 05/07
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