2004-01-27

Page 15

BSP 742 T

Figure 3a: Turn on into short circuit,

shut down by overtemperature, restart by cooling

t

I

IN

L

L(SCr)

I

I

L(SCp)

off(SC)

t

t

Figure 5: Undervoltage restart of charge pump

Heating up of the chip may require several milliseconds, depending

on external conditions.

Figure 4: Overtemperature:

Reset if Tj < Tjt

IN

OUT

J

t

V

T