TL1431-Q1 Datasheet, PDF (13/19 Pages) Texas Instruments – PRECISION PROGRAMMABLE REFERENCE

TL1431ĆQ1
PRECISION PROGRAMMABLE REFERENCE
APPLICATION INFORMATION
SLVS534B − JUNE 2004 − REVISED APRIL 2008
In
Out
V(BATT)
LM317
VO = 5 V, 1.5 A, 0.5%
8.2 kΩ
TL1431
Adjust
243 Ω
0.1%
243 Ω
0.1%
V(BATT)
Rb
TL1431
VO = 5 V
27.4 kΩ
0.1%
27.4 kΩ
0.1%
Figure 22. Precision 5-V, 1.5-A, 0.5% Regulator
NOTE A: Rb should provide cathode current ≥1 mA to the TL1431.
Figure 23. 5-V Precision Regulator
12 V
6.8 kΩ
5 V +0.5%
TL1431
10 kΩ
10 kΩ
0.1%
10 kΩ
0.1%
X
Not
Used
VCC
−
+
TL598
Feedback
Figure 24. PWM Converter With 0.5% Reference
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