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TL431BQLP 数据表(PDF) 30 Page - Texas Instruments

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部件名 TL431BQLP
功能描述  TL431, TL432 Precision Programmable Reference
PDF  78 Pages
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

TL431BQLP 数据表(HTML) 30 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
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 10-12. Voltage Monitor
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
Figure 10-13. Delay Timer
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
+
+
=
=
Figure 10-14. Precision Current Limiter
TL431
RS
0.1%
IO
VI(BATT)
I
O
V
ref
R
S
=
Figure 10-15. Precision Constant-Current Sink
TL431, TL432
SLVS543R – AUGUST 2004 – REVISED OCTOBER 2023
www.ti.com
30
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Copyright © 2023 Texas Instruments Incorporated
Product Folder Links: TL431 TL432



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