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TL431 Datasheet(PDF) 30 Page - Texas Instruments

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Part # TL431
Description  PRECISION PROGRAMMABLE REFERENCE
PDF  79 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TL431 Datasheet(HTML) 30 Page - Texas Instruments

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VO ≈5 V, 1.5 A
TL431
VI(BATT)
LM317
IN
OUT
Adjust
243 Ω
0.1%
243 Ω
0.1%
8.2 kΩ
VO ≈5 V
TL431
VI(BATT)
27.4 kΩ
0.1%
Rb
(see Note A)
27.4 kΩ
0.1%
TL431
12 V
VCC
5 V
6.8 kΩ
10 kΩ
10 kΩ
0.1%
10 kΩ
0.1%
X
Not
Used
Feedback
TL598
+
−
TL431, TL431A, TL431B
TL432, TL432A, TL432B
SLVS543L
– AUGUST 2004 – REVISED FEBRUARY 2011
www.ti.com
Figure 23. Precision 5-V, 1.5-A Regulator
A.
Rb should provide cathode current ≥1 mA to the TL431.
Figure 24. Efficient 5-V Precision Regulator
Figure 25. PWM Converter With Reference
30
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Copyright
© 2004–2011, Texas Instruments Incorporated
Product Folder Link(s): TL431 TL431A TL431B TL432 TL432A TL432B



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