TLE4997 datasheet(25/36 Pages) INFINEON

25 / 36 page

TLE4997I

Error Detection

Data Sheet

V 1.0, 2007-06

Error Detection

Different error cases can be detected by the On-Board-Diagnostics (OBD) and reported

to the microcontroller. The OBD is useful only when the clamping function is enabled. It

is important to set the clamping threshold values inside the error voltage values shown

in Table 13 and Table 14 to ensure that it is possible to distinguish between correct

output voltages and error signals.

7.1

Voltages Outside the Operating Range

The output signals error conditions, if

VDD lies

• inside the ratings specified in Table 2 "Absolute Maximum Ratings" on Page 12

• outside the range specified in Table 3 "Operating Range" on Page 13.

7.2

Open Circuit of Supply Lines

In the case of interrupted supply lines, the data acquisition device can alert the user.

Table 13

Undervoltage and Overvoltage

(

RLOAD ≥ 10k pull down or 50k pull up)

Parameter

Symbol Limit Values

Unit

Notes

min.

max.

Undervoltage threshold

VDDuv

Overvoltage threshold

VDDov

8.3

Output voltage

@ overvoltage

VOUTov

0.96 x

VDD -

VDDov < VDD ≤ 16 V

Supply current 1)

1) For overvoltage and reverse voltage, see Table 2 "Absolute Maximum Ratings" on Page 12.

IDDuv

@ undervoltage

Table 14

Open Circuit (OBD Parameters) 1)

1) With V

DD = 5 V and RL ≥ 10 kΩ pull-down or RL ≥ 50 kΩ pull-up.

Parameter

Symbol Limit Values

Unit

Notes

min.

max.

Output voltage

@ open

VDD line

VOUT

0.2

Output voltage

@ open

VSS line

VOUT

4.8

_TLE4997I_Data_Sheet.book Page 25 Wednesday, August 22, 2007 12:59 PM

TLE4997 Datasheet(PDF) 25 Page - Infineon Technologies AG

TLE4997 Datasheet(HTML) 25 Page - Infineon Technologies AG

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

Datasheet Download

Link URL