Datasheet

V
O
≈5 V, 1.5 A
TL431
V
I(BATT)
LM317
IN OUT
Adjust
243 Ω
0.1%
243 Ω
0.1%
8.2 kΩ
V
O
TL431
V
I(BATT)
R1
R2
C
(see Note A)
V
O
TL431
V
I(BATT)
R1
R2
V
O
1
R1
R2
V
ref
=
+
( (
V
O
TL431
V
I(BATT)
uA7805
IN
OUT
Common
R1
R2
V
O
1
R1
R2
V
ref
Minimum V
O
V
ref
5 V
=
+
=
+
( (
TL431, TL431A, TL431B, TL432, TL432A, TL432B
SLVS543N –AUGUST 2004–REVISED JANUARY 2014 www.ti.com
Figure 20. Output Control of a Three-Terminal Fixed Regulator
Figure 21. High-Current Shunt Regulator
A. Refer to the stability boundary conditions in Figure 15 and Figure 16 to determine allowable values for C.
Figure 22. Crowbar Circuit
Figure 23. Precision 5-V, 1.5-A Regulator
22 Submit Documentation Feedback Copyright © 2004–2014, Texas Instruments Incorporated
Product Folder Links :TL431 TL431A TL431B TL432 TL432A TL432B