TLE4699 Datasheet, PDF (25/31 Pages) Infineon Technologies AG – Low Drop Out Linear Voltage Regulator 5 V Fixed Output Voltage

TLE4699
Early Warning Function
9
Early Warning Function
9.1
Description 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. The use of an external
voltage divider makes this comparator very flexible in the application.
+
R_SI,1
VMON
RSI,2
Supply
I
CI1
CI2
Control
SI
+ _ISI
VSI
VREF
Q
RSO
SO
CQ
I_SO
GND
B loc k Diagram_S I.v s d
VDD
Px.x
Micro-
Controller
GND
Figure 9 Diagram
V_SI
V_SI,high
V_SI,low
V_SO
H
t_PD,SO;LH
t_PD,SO;HL
t
t_PD,SO;LH
L
Figure 10 Timing Diagram
Data Sheet
25
t
SI_Tim ing_ Diagram . vsd
Rev. 1.0, 2010-11-30