Datasheet

R
(see Note A)
V
O
TL431
V
I(BATT)
2N222
2N222
4.7 kΩ
R1
0.1%
R2
0.1%
0.01 µF
30 Ω
O ref
R1
V = 1 + V
R2
æ ö
ç ÷
è ø
V
O
TL431
V
I(BATT)
V
IT
≈ 2.5 V
GND
Input
V
on
≈2 V
V
off
≈V
I(BATT)
R1
0.1%
R2
0.1%
R
(see Note A)
V
ref
V
O
TL431
V
I(BATT)
RETURN
O ref
R1
V = 1 + V
R2
æ ö
ç ÷
è ø
TL431, TL431A, TL431B, TL432, TL432A, TL432B
www.ti.com SLVS543N –AUGUST 2004–REVISED JANUARY 2014
APPLICATION INFORMATION
As this device has many applications and setups, there are many situations that this datasheet can not
characterize in detail. The linked application notes will help the designer make the best choices when using this
part.
Application note SLVA482 will provide a deeper understanding of this devices stability characteristics and aid the
user in making the right choices when choosing a load capacitor. Application note SLVA445 assists designers in
setting the shunt voltage to achieve optimum accuracy for this device.
A. R should provide cathode current ≥1 mA to the TL431 at minimum V
(BATT)
.
Figure 17. Shunt Regulator
Figure 18. Single-Supply Comparator With Temperature-Compensated Threshold
A. R should provide cathode current ≥1 mA to the TL431 at minimum V
(BATT)
.
Figure 19. Precision High-Current Series Regulator
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Product Folder Links :TL431 TL431A TL431B TL432 TL432A TL432B