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TL431 데이터시트(PDF) 31 Page - Texas Instruments

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부품명 TL431
상세설명  PRECISION PROGRAMMABLE REFERENCE
PDF  79 Pages
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제조업체  TI [Texas Instruments]
홈페이지  http://www.ti.com
Logo TI - Texas Instruments

TL431 데이터시트(HTML) 31 Page - Texas Instruments

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TL431
VI(BATT)
R3
(see Note A)
R1A
R4
(see Note A)
R2B
R2A
R1B
Low Limit = 1 + R1B
R2B
V
ref
High Limit = 1 + R1A
R2A
V
ref
LED on When Low Limit < VI(BATT) < High Limit
TL431
650 Ω
2 kΩ
C
On
Off
R
12 V
n
ref
12 V
Delay = R × C × I
12 V – V
æ
ö
ç
÷
ç
÷
è
ø
TL431
IO
RCL
0.1%
R1
VI(BATT)
Iout
V
ref
R
CL
I
KA
R1
V
I(BATT)
I
O
h
FE
I
KA
+
+
=
=
TL431
RS
0.1%
IO
VI(BATT)
I
O
V
ref
R
S
=
TL431, TL431A, TL431B
TL432, TL432A, TL432B
www.ti.com
SLVS543L
– AUGUST 2004 – REVISED FEBRUARY 2011
A.
Select R3 and R4 to provide the desired LED intensity and cathode current
≥1 mA to the TL431 at the available
VI(BATT).
Figure 26. Voltage Monitor
Figure 27. Delay Timer
Figure 28. Precision Current Limiter
Figure 29. Precision Constant-Current Sink
Copyright
© 2004–2011, Texas Instruments Incorporated
Submit Documentation Feedback
31
Product Folder Link(s): TL431 TL431A TL431B TL432 TL432A TL432B



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