Datasheet

TL431
R
S
0.1%
I
O
V
I(BATT)
I
O
V
ref
R
S
=
TL431
I
O
R
CL
0.1%
R1
V
I(BATT)
I
out
V
ref
R
CL
I
KA
R1
V
I
(
BATT
)
I
O
h
FE
I
KA
+
+
=
=
TL431
650 Ω
2 kΩ
C
On
Off
R
12 V
n
ref
12 V
Delay = R × C × I
12 V – V
æ ö
ç ÷
ç ÷
è ø
TL431, TL431A, TL431B, TL432, TL432A, TL432B
SLVS543N –AUGUST 2004–REVISED JANUARY 2014 www.ti.com
Figure 27. Delay Timer
Figure 28. Precision Current Limiter
Figure 29. Precision Constant-Current Sink
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Product Folder Links :TL431 TL431A TL431B TL432 TL432A TL432B