TL431BILPE3 datasheet(28/76 Pages) TI

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0.1%

(see Note A)

Vref

TL431

VI(BATT)

RETURN

ref

= 1 +

TL431

VI(BATT)

VIT ≈ 2.5 V

GND

Input

Von ≈2 V

Voff ≈VI(BATT)

TL431, TL431A, TL431B

TL432, TL432A, TL432B

SLVS543K – AUGUST 2004 – REVISED JUNE 2010

www.ti.com

APPLICATION INFORMATION

Table 2. Table of Application Circuits

APPLICATION

FIGURE

Shunt regulator

Figure 17

Single-supply comparator with temperature-compensated threshold

Figure 18

Precision high-current series regulator

Figure 19

Output control of a three-terminal fixed regulator

Figure 20

High-current shunt regulator

Figure 21

Crowbar Circuit

Figure 22

Precision 5-V, 1.5-A regulator

Figure 23

Efficient 5-V precision regulator

Figure 24

PWM converter with reference

Figure 25

Voltage monitor

Figure 26

Delay timer

Figure 27

Precision current limiter

Figure 28

Precision constant-current sink

Figure 29

R should provide cathode current

≥1 mA to the TL431 at minimum V(BATT).

Figure 17. Shunt Regulator

Figure 18. Single-Supply Comparator With Temperature-Compensated Threshold

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Product Folder Link(s): TL431 TL431A TL431B TL432 TL432A TL432B

TL431BILPE3 数据表(PDF) 28 Page - Texas Instruments

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