Datasheet

V
(BATT)
V
O
Input
V
on
≈ 2 V
V
off
≈ V
(BATT)
TL1431
V
IT
= 2.5 V
GND
V
(BATT)
R
R1
0.1%
R2
0.1%
V
I(ref)
V
O
TL1431
V
O
+
ǒ
1 )
R1
R2
Ǔ
V
I(ref)
TL1431
SLVS062M –DECEMBER 1991–REVISED APRIL 2012 www.ti.com
APPLICATION INFORMATION
Table 1. Table of Application Circuits
APPLICATION FIGURE
Shunt regulator Figure 16
Single-supply comparator with temperature-compensated threshold Figure 17
Precision high-current series regulator Figure 18
Output control of a three-terminal fixed regulator Figure 19
Higher-current shunt regulator Figure 20
Crowbar Figure 21
Precision 5-V, 1.5-A, 0.5% regulator Figure 22
5-V precision regulator Figure 23
PWM converter with 0.5% reference Figure 24
Voltage monitor Figure 25
Delay timer Figure 26
Precision current limiter Figure 27
Precision constant-current sink Figure 28
A. R should provide cathode current ≥1 mA to the TL1431 at minimum V
(BATT)
.
Figure 16. Shunt Regulator Figure 17. Single-Supply Comparator With
Temperature-Compensated Threshold
A. R should provide cathode current ≥1 mA to the TL1431 at minimum V
(BATT)
.
12 Submit Documentation Feedback Copyright © 1991–2012, Texas Instruments Incorporated
Product Folder Links: TL1431