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TL431LI Datasheet(Fiches technique) 20 Page - Texas Instruments

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Numéro de pièce TL431LI
Description  Programmable Shunt Regulator with Optimized Reference Current
Télécharger  32 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
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 20 page
background image
VO
TL43xLIx
VI(BATT)
R1
R2
V
O
1
R1
R2
V
ref
=
+
(
(
Copyright © 2017, Texas Instruments Incorporated
VO
TL43xLIx
VI(BATT)
uA7805
IN
OUT
Common
R1
R2
V
O
1
R1
R2
V
ref
Minimum V
O
V
ref
5 V
=
+
=
+
(
(
Copyright © 2017, Texas Instruments Incorporated
R
(see Note A)
VO
TL43xLIx
VI(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
Copyright © 2017, Texas Instruments Incorporated
20
TL431LI
TL432LI
SLVSDQ6 – JULY 2018
www.ti.com
Product Folder Links: TL431LI TL432LI
Submit Documentation Feedback
Copyright © 2018, Texas Instruments Incorporated
10.3 System Examples
A.
R should provide cathode current
≥1 mA to the TL431LI at minimum V(BATT).
Figure 25. Precision High-Current Series Regulator
Figure 26. Output Control of a Three-Terminal Fixed Regulator
Figure 27. High-Current Shunt Regulator




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