TLE42794

Block Description and Electrical Characteristics

Data Sheet

22

Rev. 1.1, 2008-10-09

5.8

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 8

Sense Timing Diagram

Electrical Characteristics Early Warning Function

V

(unless otherwise specified)

Pos.

Parameter

Symbol

Limit Values

Unit

Conditions

Min.

Typ.

Max.

Sense Comparator Input

5.8.1

Sense Threshold High

V

SI,high

1.24

1.31

1.38

V

–

5.8.2

Sense Threshold Low

V

SI,low

1.16

1.22

1.28

V

–

5.8.3

Sense Switching Hysteresis

V

SI,hy

20

90

160

mV

–

5.8.4

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