L9929

18/23

7

ISO-PULSES

In the main-power-supply-system disturbance transients according to ISO 7637-1 First Edition 1990-06-01

may occur.

By means of external components (see Fig. 12) the following maximum ratings of the IC will not be exceeded.

statical

-1V ...... +40V

dynamical for t < 500 ms

-2V ...... +40V

APPENDIX A

Figure 18.

OUT1

OUT2

Load available

1

1

Open Load

1

0

SC -> GND on OUT1 with Load

0

0

SC detected on normal operation

SC -> GND on OUT2 with Load

0

0

SC detected on normal operation

SC -> UB on OUT1 with Load

1

1

SC detected on normal operation

SC -> UB on OUT2 with Load

1

1

SC detected on normal operation

SC -> GND on OUT1 Open Load

0

0

OL not detected Double Fault

SC -> GND on OUT2 Open Load

1

0

OL detected

SC -> UB on OUT1 Open Load

1

0

OL detected

SC -> UB on OUT2 Open Load

1

1

OL not detected Double Fault

1.5 mA

1 mA

OUT1

OUT2

IN2

IN1

VBatt

int 5V