Datasheet

Datasheet 8 Version 2.3, 2009-09-16
ISOFACE™
ISO1H801G
Functional Description
output into a low duty cycle PWM (selective thermal
shutdown with restart) to prevent critical chip
temperatures.
IN
VOUT
T
J
t
t
t
Figure 5 Overtemperature detection
The following figures show the timing for a turn on into
short circuit and a short circuit in on-state. Heating up
of the chip may require several milliseconds,
depending on external conditions.
IN
VOUT
I
L
t
t
t
Output short to GND
I
L(SCp)
I
L(SCr)
Figure 6 Turn on into short circuit, shut down by
overtemperature, restart by cooling
IN
VOUT
I
L
t
t
t
Output short to GND
I
L(SCp)
I
L(SCr)
Normal
operation
Figure 7 Short circuit in on-state, shut down
down by overtemperature, restart by
cooling
3.4 Reserved