BSP 742 R
Figure 3b: Short circuit in on-state
shut down by overtemperature, restart by cooling
Figure 3a: Turn on into short circuit,
shut down by overtemperature, restart by cooling
IN
IN
V
V
O U T
O U T
n o rm a l
O u tp u t s h o rt to G N D
O u tp u t s h o rt to G N D
o p e ra tio n
I
I
L ( S C p )
L
I
I
L
L (S C r)
I
L (S C r)
S T
S T
t
t
t
d ( S T )
Heating up of the chip may require several milliseconds, depending
on external conditions.
Figure 5: Undervoltage restart of charge pump
Figure 4: Overtemperature:
V o n
Reset if T < T
j
jt
IN
ST
V b b ( u c p )
V
b b ( u n d er )
I
L
V b b
T
J
t
2004-03-16
Page 16
INFINEON [ Infineon ]
