TLS820F0 datasheet(29/41 Pages) INFINEON

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TLS820F0

Block Description and Electrical Characteristics

Data Sheet

Rev. 1.1, 2015-07-27

Table 10

Electrical Characteristics Watchdog

j = -40 °C to +150 °C, VI = 13.5 V, all voltages with respect to ground (unless otherwise specified)

Typical values are given at

j = 25 °C

Parameter

Symbol

Values

Unit Note / Test Condition

Number

Min. Typ. Max.

Watchdog Timing

Watchdog Ignore Time

WI,i

12.8 16

19.2

–

P_5.9.1

Watchdog Trigger Time

WI,tr,1

76.8 96

115.2 ms

DT1 connected to GND;

DT2 connected to GND

P_5.9.2

Watchdog Trigger Time

WI,tr,2

38.4 48

57.6

DT1 connected to Q;

DT2 connected to GND

P_5.9.3

Watchdog Trigger Time

WI,tr,3

25.6 32

38.4

DT1 connected to GND;

DT2 connected to Q

P_5.9.4

Watchdog Trigger Time

WI,tr,4

12.8 16

19.2

DT1 connected to Q;

DT2 connected to Q

P_5.9.5

Watchdog Output Low Time

WO,low

6.4

9.6

–

P_5.9.6

Load Dependent Watchdog Activation

Watchdog Activation Current

Threshold

Q,W,act

–

5.5

for

Q,nom =5V:

I >5.44V;

high current condition must

be applied at least for the

time of

W,filter,max

P_5.9.11

Watchdog Deactivation Current

Threshold

Q,W,deact

–

for

Q,nom =5V:

I >5.44V;

low current condition must

be applied at least for the

time of

W,filter,max

P_5.9.12

Watchdog Deactivation Current

Hysteresis

Q,W,hy

0.35 –

–

for

Q,nom =5V:

I >5.44V;

P_5.9.13

Watchdog Activation Current

Threshold

Q,W,act

–

5.5

for

Q,nom =3.3 V:

I >3.72V;

high current condition must

be applied at least for the

time of

W,filter,max

P_5.9.39

Watchdog Deactivation Current

Threshold

Q,W,deact

–

for

Q,nom =3.3 V:

I >3.72V;

low current condition must

be applied at least for the

time of

W,filter,max

P_5.9.40

Watchdog Deactivation Current

Hysteresis

Q,W,hy

0.35 –

–

for

Q,nom =3.3 V:

I >3.72V;

P_5.9.41

Watchdog Minimum Filter Time

state transition by current

W,IQ,filter,

min

100

–

µs

1) – see Page 31

P_5.9.14

Watchdog Maximum Filter Time

state transition by current

W,IQ,filter,

max

–

500

µs

1) – see Page 31

P_5.9.15

Watchdog Input WI

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