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| TL431 Datasheet, PDF (8/8 Pages) Motorola, Inc – PROGRAMMABLE PRECISION REFERENCES | |||
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PROGRAMMABLE PRECISION REFERENCES
APPLICATION INFORMATION
VI(BATT)
R
(SEE NOTE A)
VREF
R1
0.1%
R2
0.1%
VO
TL431
VO =ï¼1+
R1
R2
ï¼VREF
RETURN
NOTE A : R Should provide cathode currentâ¥1ã to the TL431 at minimum VI(BATT)
Figure 13. Shunt Regulator
TL431
VI(BATT)
TL431
INPUT
VIT ~~ 2.5V
VO
VON ~~ 2.5V
VOFF ~~ VI(BATT)
GND
Figure 16. Single-Supply Comparator With Temperature-Compensated Threshold
Figure 14.
JinYu
semiconductor
www.htsemi.com
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