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TL432AC Datasheet

three-terminal adjustable shunt regulator

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TL431, TL432
SLVS543P – AUGUST 2004 – REVISED NOVEMBER 2018
TL431 / TL432 Precision Programmable Reference
1 Features
1 Reference Voltage Tolerance at 25°C
– 0.5% (B Grade)
– 1% (A Grade)
– 2% (Standard Grade)
• Adjustable Output Voltage: Vref to 36 V
• Operation From 40°C to 125°C
• Typical Temperature Drift (TL43xB)
– 6 mV (C Temp)
– 14 mV (I Temp, Q Temp)
• Low Output Noise
• 0.2-Ω Typical Output Impedance
• Sink-Current Capability: 1 mA to 100 mA
2 Applications
• Adjustable Voltage and Current Referencing
• Secondary Side Regulation in Flyback SMPSs
• Zener Replacement
• Voltage Monitoring
• Comparator with Integrated Reference
Simplified Schematic
Input
VKA
IKA
Vref
3 Description
The TL431LI / TL432LI are pin-to-pin alternatives
to TL431 / TL432. TL43xLI offers better stability,
lower temperature drift (VI(dev)), and lower
reference current (Iref) for improved system
accuracy.
The TL431 and TL432 devices are three-terminal
adjustable shunt regulators, with specified thermal
stability over applicable automotive, commercial, and
military temperature ranges. The output voltage can
be set to any value between Vref (approximately
2.5 V) and 36 V, with two external resistors. These
devices have a typical output impedance of 0.2 Ω.
Active output circuitry provides a very sharp turn-on
characteristic, making these devices excellent
replacements for Zener diodes in many applications,
such as onboard regulation, adjustable power
supplies, and switching power supplies. The TL432
device has exactly the same functionality and
electrical specifications as the TL431 device, but has
different pinouts for the DBV, DBZ, and PK packages.
Both the TL431 and TL432 devices are offered in
three grades, with initial tolerances (at 25°C) of 0.5%,
1%, and 2%, for the B, A, and standard grade,
respectively. In addition, low output drift versus
temperature ensures good stability over the entire
temperature range.
The TL43xxC devices are characterized for operation
from 0°C to 70°C, the TL43xxI devices are
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 × 1.30 mm
SOT-23-5 (5)
2.90 mm × 1.60 mm
TL43x
SOIC (8)
4.90 mm × 3.90 mm
PDIP (8)
9.50 mm × 6.35 mm
SOP (8)
6.20 mm × 5.30 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
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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TL432AC Datasheet Preview

TL432AC Datasheet

three-terminal adjustable shunt regulator

No Preview Available !

TL431, TL432
SLVS543P – AUGUST 2004 – REVISED NOVEMBER 2018
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Device Comparison Table..................................... 3
6 Pin Configuration and Functions ......................... 4
7 Specifications......................................................... 5
7.1 Absolute Maximum Ratings ...................................... 5
7.2 ESD Ratings.............................................................. 5
7.3 Thermal Information .................................................. 5
7.4 Recommended Operating Conditions....................... 5
7.5 Electrical Characteristics, TL431C, TL432C ............. 6
7.6 Electrical Characteristics, TL431I, TL432I ................ 7
7.7 Electrical Characteristics, TL431Q, TL432Q............. 8
7.8 Electrical Characteristics, TL431AC, TL432AC ........ 9
7.9 Electrical Characteristics, TL431AI, TL432AI ......... 10
7.10 Electrical Characteristics, TL431AQ, TL432AQ.... 11
7.11 Electrical Characteristics, TL431BC, TL432BC .... 12
7.12 Electrical Characteristics, TL431BI, TL432BI ....... 13
7.13 Electrical Characteristics, TL431BQ, TL432BQ.... 14
7.14 Typical Characteristics .......................................... 15
8 Parameter Measurement Information ................ 19
9 Detailed Description ............................................ 20
9.1 Overview ................................................................. 20
9.2 Functional Block Diagram ....................................... 20
9.3 Feature Description................................................. 21
9.4 Device Functional Modes........................................ 21
10 Applications and Implementation...................... 22
10.1 Application Information.......................................... 22
10.2 Typical Applications .............................................. 22
10.3 System Examples ................................................. 27
11 Power Supply Recommendations ..................... 30
12 Layout................................................................... 30
12.1 Layout Guidelines ................................................. 30
12.2 Layout Example .................................................... 30
13 Device and Documentation Support ................. 31
13.1 Device Nomenclature............................................ 31
13.2 Related Links ........................................................ 31
13.3 Receiving Notification of Documentation Updates 31
13.4 Community Resources.......................................... 31
13.5 Trademarks ........................................................... 31
13.6 Electrostatic Discharge Caution ............................ 32
13.7 Glossary ................................................................ 32
14 Mechanical, Packaging, and Orderable
Information ........................................................... 32
4 Revision History
Changes from Revision O (January 2015) to Revision P
Page
• Added text to the Description section..................................................................................................................................... 1
• Added TL43x Device Comparison Table ............................................................................................................................... 3
• Added TL43x Device Nomenclature section ........................................................................................................................ 31
Changes from Revision N (January 2014) to Revision O
Page
• Added Applications, Device Information table, Pin Functions table, ESD Ratings table, Thermal Information table,
Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply
Recommendations section, Layout section, Device and Documentation Support section, and Mechanical,
Packaging, and Orderable Information section. ..................................................................................................................... 1
• Added Applications. ................................................................................................................................................................ 1
• Moved Typical Characteristics into Specifications section. ................................................................................................. 15
Changes from Revision M (July 2012) to Revision N
Page
• Updated document formatting ................................................................................................................................................ 1
• Removed Ordering Information table. .................................................................................................................................... 4
• Added Application Note links................................................................................................................................................ 22
2
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Copyright © 2004–2018, Texas Instruments Incorporated
Product Folder Links: TL431 TL432


Part Number TL432AC
Description three-terminal adjustable shunt regulator
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