TLE42994V33 Datasheet, PDF (20/25 Pages) Infineon Technologies AG – Low Dropout Fixed Voltage Regulator

TLE42994V33
Block Description and Electrical Characteristics
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.
Sense
Input
Voltage
V_{SI, High}
V_{SI, Low}
t
Sense
Output
High
Low
t
AED03049
Figure 7 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
5.8.1 Sense Threshold High
V_SI,high 1.34 1.45 1.54 V
–
5.8.2 Sense Threshold Low
V_SI,low
1.26 1.36 1.44 V
–
5.8.3 Sense Switching Hysteresis V_SI,hy
50
90
130
mV
V_SI,hy = V_SI,high - V_SI,low
5.8.4 Sense Input Current
I_SI
-1
-0.1 1
µA –
Data Sheet
20
Rev. 1.01, 2010-10-14