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TL431AQDBVR Fiches technique(PDF) 1 Page - Texas Instruments

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No de pièce TL431AQDBVR
Description  Precision Programmable Reference
Download  74 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

TL431AQDBVR Fiches technique(HTML) 1 Page - Texas Instruments

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TL431, TL431A, TL431B
TL432, TL432A, TL432B
SLVS543O – AUGUST 2004 – REVISED JANUARY 2015
TL43xx Precision Programmable Reference
1 Features
3 Description
The TL431 and TL432 devices are three-terminal
1
Reference Voltage Tolerance at 25°C
adjustable shunt regulators, with specified thermal
0.5% (B Grade)
stability over applicable automotive, commercial, and
1% (A Grade)
military temperature ranges. The output voltage can
be set to any value between Vref (approximately
2% (Standard Grade)
2.5 V) and 36 V, with two external resistors. These
Adjustable Output Voltage: Vref to 36 V
devices have a typical output impedance of 0.2
Ω.
Operation From
−40°C to 125°C
Active output circuitry provides a very sharp turn-on
characteristic,
making
these
devices
excellent
Typical Temperature Drift (TL431B)
replacements for Zener diodes in many applications,
6 mV (C Temp)
such
as
onboard
regulation,
adjustable
power
14 mV (I Temp, Q Temp)
supplies, and switching power supplies. The TL432
Low Output Noise
device
has
exactly
the
same
functionality
and
electrical specifications as the TL431 device, but has
0.2-
Ω Typical Output Impedance
different pinouts for the DBV, DBZ, and PK packages.
Sink-Current Capability: 1 mA to 100 mA
Both the TL431 and TL432 devices are offered in
three grades, with initial tolerances (at 25°C) of 0.5%,
2 Applications
1%, and 2%, for the B, A, and standard grade,
Adjustable Voltage and Current Referencing
respectively. In addition, low output drift versus
temperature ensures good stability over the entire
Secondary Side Regulation in Flyback SMPSs
temperature range.
Zener Replacement
The TL43xxC devices are characterized for operation
Voltage Monitoring
from
0°C
to
70°C,
the
TL43xxI
devices
are
Comparator with Integrated Reference
characterized for operation from –40°C to 85°C, and
the TL43xxQ devices are characterized for operation
from –40°C to 125°C.
Device Information(1)
PART NUMBER
PACKAGE (PIN)
BODY SIZE (NOM)
SOT-23-3 (3)
2.90 mm x 1.30 mm
SOT-23-5 (5)
2.90 mm x 1.60 mm
TL43xx
SOIC (8)
4.90 mm x 3.90 mm
PDIP (8)
9.50 mm x 6.35 mm
SOP (8)
6.20 mm x 5.30 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
4 Simplified Schematic
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.


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