Rev. C 09/12

6

TNY375-380

www.powerint.com

PI-4541-042507

V

DRAIN

V

EN

CLOCK

D

DRAIN

I

MAX

Figure 9.

Operation at Very Light Load (f

0

1

2

Time (ms)

0

200

400

5

0

10

0

100

200

V

DC-INPUT

V

BYPASS

V

DRAIN

0

1

2

Time (ms)

0

200

400

5

0

10

0

100

200

V

DC-INPUT

V

BYPASS

V

DRAIN

0

.5

1

Time (s)

0

100

200

300

0

100

200

400

V

DC-INPUT

V

DRAIN

0

2.5

5

Time (s)

0

100

200

400

300

0

100

200

V

DC-INPUT

V

DRAIN

Figure 10. Power-up With Optional External UV Resistor (4 MW) Connected

to EN/UV Pin.

Figure 11. Power-up Without Optional External UV Resistor Connected

to EN/UV Pin.

Figure 12. Normal Power-down Timing (Without UV Resistor).

Figure 13. Slow Power-down Timing With Optional External (4 MW) UV Resistor

Connected to EN/UV Pin.