Data Sheet

19

Rev. 1.0, 2008-04-21

TLE4263-2ES

Application Information

6.2

Watchdog

Figure 5

Timing of the Watchdog Function Reset

Watchdog Timing

The period of the watchdog pulses has to be smaller than the minimum watchdog trigger time which is set by the

external reset delay capacitor

C

(2)

with

•

C

V

W

t

V

RO

TimingDiagram_Watchdog.vsd

t

V

RO,l

t

WD,L

t

WI,tr

V

DWL

V

DU

t

V

D

t

WD,L

T

WI,p

No positive

V

------------------------ 100 nF

×

=