Analog Integrated Circuit Device Data

10

Freescale Semiconductor

33385

ELECTRICAL CHARACTERISTICS

TIMING DIAGRAMS

Figure 7. Diagram to Short-Circuit to GND Failure (SCG-Failure) Detection

Figure 8. Diagram to Open Load Failure (OL-Failure) Detection

off

NON

on

t-SCG (filter-time)

Failure detection

Failure store

Failure detection time

for an SCG failure

SCG-failure

Filter time

off

NON

on

Iload

Diagnostic active

Failure detection

t-ol (filter-time)

Failure detection active

for an sporadic OL-failure

Iload > I-OL

Failure store

Sporadic failure detection

Statical failure detection

I-OL

Iload > IOL for t > tol

retrigger t filter

tol

retrigger filter

Sporadic failure-detection

t < t-ol