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| TL431Z Datasheet, PDF (12/15 Pages) List of Unclassifed Manufacturers – PROGRAMMABLE PRECISION SHUNT REGULATOR | |||
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PROGRAMMABLE PRECISION SHUNT REGULATOR TL431Z/AZ /CZ
APPLICATION INFORMATION
VI(BATT)
IN
LM7805
OUT
COMMON
TL431
VO
R1
VO =ï¼1+
R1
R2 ï¼VREF
MINIMUM VO=VREF+5V
R2
Figure 18. Output Control of a 3-Terminal Fixed Regulator
VI(BATT)
RETURN
R1
R2
TL431
VO
VO =ï¼1+
R1
R2 ï¼VREF
Figure 19. High-Current Shunt Regulator
VI(BATT)
VO
R1
TL431
R2
C
(SEE NOTE A)
NOTE A : Refer to the stability boundary conditions in Figure 16 to determine allowable values for C.
Figure 20. Crowbar Circuit
Jan. 2007 - Rev 1.0
12
HTC
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