Datasheet

Data Sheet 15 Rev. 1.0, 2008-04-21
TLE4263-2ES
Electrical Characteristics
5.9 Watchdog Function
5.10 Typical Performance Characteristics Watchdog
Electrical Characteristics Watchdog Function
V
I
= 13.5 V, -40 °C ≤ T
j
≤ 150 °C, V
INH
> 3.6 V; all voltages with respect to ground, positive current flowing into pin
(unless otherwise specified)
Pos. Parameter Symbol Limit Values Unit Conditions
Min. Typ. Max.
5.9.1 Discharge Current
I
D,wd
4.40 6.25 9.40 µA V
D
= 1.0 V
5.9.2 Upper Timing Threshold
V
DU
1.40 1.70 2.20 V –
5.9.3 Lower Timing Threshold
V
DWL
0.20 0.35 0.55 V –
5.9.4 Watchdog Trigger Time T
WI,tr
16 22.5 27 ms C
D
= 100 nF
V
Q
> V
Q,RT
5.9.5 Watchdog Output Low Time T
WD,L
12.13.5msC
D
= 100 nF
V
Q
> V
Q,RT
5.9.6 Watchdog Period
T
WI,p
= T
WD,L
+ T
WI,tr
T
WI,p
17 24.6 30.5 ms C
D
= 100 nF
V
Q
> V
Q,RT
Charge Current and Discharge Current
versus Temperature
Watchdog Trigger Time
versus Temperature
40
20
30
10
0-40 40
0
80
60
70
50
Ι
A
C
12080 160
T
j
AED03064
µ
= 13.5 V
= 1.5 V
Ι
V
V
D
Ι
D, ch
D, dis
Ι
20
10
15
5
0-40 40
0
40
30
35
25
WI,tr
T
C
12080 160
T
j
AED03065_4263
ms
V
Ι
= 13.5 V
= 100 nF
C
D