TL432A-Q1 Datasheet, PDF (13/22 Pages) Texas Instruments – ADJUSTABLE PRECISION SHUNT REGULATORS

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TL432A-Q1
TL432B-Q1
SLVS900A – NOVEMBER 2008 – REVISED JULY 2012
APPLICATION INFORMATION
Table 2. Application Circuits
Shunt regulator
Single-supply comparator with temperature-compensated threshold
Precision high-current series regulator
Output control of a three-terminal fixed regulator
High-current shunt regulator
Crowbar circuit
Precision 5-V 1.5-A regulator
Efficient 5-V precision regulator
PWM converter with reference
Voltage monitor
Delay timer
Precision current limiter
Precision constant-current sink
FIGURE
Figure 17
Figure 18
Figure 19
Figure 20
Figure 21
Figure 22
Figure 23
Figure 24
Figure 25
Figure 26
Figure 27
Figure 28
Figure 29
R
(see Note A)
V_I(BATT)
R1
0.1%
V_ref
R2
0.1%
V_O
TL432x-Q1
V_O
=
æçè₁₊
R1 ö
R2 ^{÷ø Vref}
RETURN
A. R should provide cathode current ≥1 mA to the TL432x-Q1 at minimum V_I(BATT).
Figure 17. Shunt Regulator
V_I(BATT)
TL432x-Q1
Input
V_IT ≈ 2.5 V
V_O
V_on ≈ 2 V
V ≈ V _off
I(BATT)
GND
Figure 18. Single-Supply Comparator With Temperature-Compensated Threshold
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