TL432A-Q1 Datasheet, PDF (14/22 Pages) Texas Instruments – ADJUSTABLE PRECISION SHUNT REGULATORS

TL432A-Q1
TL432B-Q1
SLVS900A – NOVEMBER 2008 – REVISED JULY 2012
V_I(BATT)
TL432x-Q1
R
(see Note A)
2N222
30 Ω
0.01 µF
R2
0.1%
R1
0.1%
4.7 kΩ
2N222
V_O
=
æçè₁₊
R1
R2
ö
÷ø
V_ref
V_O
A. R should provide cathode current ≥1 mA to the TL432x-Q1 at minimum V_I(BATT).
Figure 19. Precision High-Current Series Regulator
V_I(BATT)
IN
uA7805
Common
OUT
TL432x-Q1
V_O
R1
R2
V_O
=
æçè₁₊
R1 ö
R2 ^{÷ø Vref}
Minimum V = V + 5 V
O
ref
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Figure 20. Output Control of a Three-Terminal Fixed Regulator
V_I(BATT)
R1
R2
TL432x-Q1
V_O
V_O
=
æçè₁₊
R1 ö
R2 ^{÷ø Vref}
Figure 21. High-Current Shunt Regulator
V_I(BATT)
R1
TL432x-Q1
R2
V_O
C
(see Note A)
A. See the stability boundary conditions in Figure 16 to determine allowable values for C.
Figure 22. Crowbar Circuit
14
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