Datasheet

UNREG
(R1 + R2)
V = 2.5
R2
1/2 TLC393
To µP Interrupt
Early Power Fail
+
−
+
−
1 kΩ
3.3 kΩ
C
T
(see Note B)
1/2 TLC393
10 kΩ
5 V
5 V
12-V
Sense
R2
R1
V
UNREG
(see Note A)
1 µF
12 V
RESIN
REF C GND
T
RESET
SENSEV
CC
To µP
Reset
Monitors 5-VDC Rail
Monitors 12-VDC Rail
Early Power Fail Warning
TL7705A
2.5 V
5.1 kΩ
5.1 kΩ
12 V
TLC393-Q1
www.ti.com SGLS198B –SEPTEMBER 2004–REVISED MAY 2013
A.
B. The value of C
T
determines the time delay of reset.
Figure 20. Enhanced Supply Supervisor
Copyright © 2004–2013, Texas Instruments Incorporated Submit Documentation Feedback 13
Product Folder Links: TLC393-Q1