TL1431MFKB datasheet(12/28 Pages) TI

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APPLICATION INFORMATION

V(BATT)

0.1%

VI(ref)

TL1431

O +

1 )

I(ref)

V(BATT)

Input

Von ≈ 2 V

Voff ≈ V(BATT)

TL1431

VIT = 2.5 V

GND

TL1431

PRECISION PROGRAMMABLE REFERENCE

SLVS062L – DECEMBER 1991 – REVISED OCTOBER 2007

Table of Application Circuits

APPLICATION

FIGURE

Shunt regulator

Single-supply comparator with temperature-compensated threshold

Precision high-current series regulator

Output control of a three-terminal fixed regulator

Higher-current shunt regulator

Crowbar

Precision 5-V, 1.5-A, 0.5% regulator

5-V precision regulator

PWM converter with 0.5% reference

Voltage monitor

Delay timer

Precision current limiter

Precision constant-current sink

Figure 17. Single-Supply Comparator With

R should provide cathode current

≥1 mA to

Temperature-Compensated Threshold

the TL1431 at minimum V(BATT).

Figure 16. Shunt Regulator

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