Datasheet

TLE42994
Block Description and Electrical Characteristics
Data Sheet 24 Rev. 1.1, 2009-05-19
5.9 Early Warning Function
The additional sense comparator provides an early warning function: Any voltage (e.g. the input voltage) can be
monitored, an undervoltage condition is indicated by setting the comparator’s output to low.
Figure 9 Sense Timing Diagram
Electrical Characteristics Early Warning Function
V
I
= 13.5 V, -40 °C ≤ T
j
≤ 150 °C, all voltages with respect to ground, positive current flowing into pin
(unless otherwise specified)
Pos. Parameter Symbol Limit Values Unit Conditions
Min. Typ. Max.
Sense Comparator Input
5.9.1 Sense Threshold High
V
SI,high
1.34 1.45 1.54 V –
5.9.2 Sense Threshold Low
V
SI,low
1.26 1.36 1.44 V –
5.9.3 Sense Switching Hysteresis
V
SI,hy
50 90 130 mV V
SI,hy
= V
SI,high
- V
SI,low
5.9.4 Sense Input Current I
SI
-1 -0.1 1 µA –
AED03049
t
Sense
t
SI, High
V
SI, Low
V
Input
Voltage
High
Low
Output
Sense