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| TL432A-Q1_16 Datasheet, PDF (16/24 Pages) Texas Instruments – ADJUSTABLE PRECISION SHUNT REGULATORS | |||
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TL432A-Q1
TL432B-Q1
SLVS900A â NOVEMBER 2008 â REVISED JULY 2012
VI(BATT)
R3
(see Note A)
R1A
TL432x-Q1
R1B
R4
(see Note A)
R2A
R2B
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Low
Limit
=
æ
çè1
+
R1B
R2B
ö
÷ø
Vref
High
Limit
=
æçè1+
R1A
R2A
ö
÷ø
Vref
LED on When Low Limit < VI(BATT) < High Limit
A. R3 and R4 are selected to provide the desired LED intensity and cathode current â¥1 mA to the TL432x-Q1 at the
available VI(BATT).
Figure 26. Voltage Monitor
12 V
650 Ω
R
2 kΩ
TL432x-Q1
On
C
Off
Delay
=R
´
C
´
In
æ
ç
è
12
12 V
V - Vref
ö
÷
ø
Figure 27. Delay Timer
VI(BATT)
RCL
IO
0.1%
Iout
=
Vref
RCL
+ IKA
R1
TL432x-Q1
R1 =
VI(BATT)
IO
hFE
+ IKA
Figure 28. Precision Current Limiter
VI(BATT)
IO
TL432x-Q1
RS
0.1%
IO
=
Vref
RS
Figure 29. Precision Constant-Current Sink
16
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Copyright © 2008â2012, Texas Instruments Incorporated
Product Folder Link(s): TL432A-Q1 TL432B-Q1
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