Datasheet TL431, TL431A, TL431B, TL432, TL432A, TL432B (Texas Instruments) - 3

TL431 , TL431A, TL431B TL432 , TL432A, TL432B www.ti.com
SLVS543O – AUGUST 2004 – REVISED JANUARY 2015
6 Pin Configuration and Functions
TL431, TL431A, TL431B . LP (TO-92/TO-226) PACKAGE TL431 . KTP (PowerFLEX /TO-252) PACKAGE TL431A, TL431B . DCK (SC-70) PACKAGE (TOP VIEW) (TOP VIEW) (TOP VIEW) CATHODE 1 CATHODE 6 ANODE CATHODE ANODE NC 2 5 NC ANODE ANODE 3 REF 4 NC REF REF NC − No internal connection TL431, TL431A, TL431B . D (SOIC) PACKAGE TL431, TL431A, TL431B . P (PDIP), PS (SOP), (TOP VIEW) OR PW (TSSOP) PACKAGE (TOP VIEW) CATHODE 1 8 REF ANODE 2 7 ANODE CATHODE 1 8 REF ANODE 3 6 ANODE NC 2 7 NC NC 4 5 NC NC 3 6 ANODE NC 4 5 NC NC − No internal connection NC − No internal connection TL431, TL431A, TL431B . PK (SOT-89) PACKAGE TL432, TL432A, TL432B . PK (SOT-89) PACKAGE (TOP VIEW) (TOP VIEW) CATHODE REF ANODE ANODE ANODE ANODE REF CATHODE TL432, TL432A, TL432B . DBV (SOT-23-5) PACKAGE TL431, TL431A, TL431B . DBV (SOT-23-5) PACKAGE (TOP VIEW) (TOP VIEW) 1 1 NC REF NC 5 5 ANODE 2 ANODE † 2 NC 3 4 CATHODE CATHODE 3 4 REF NC − No internal connection NC − No internal connection † Pin 2 is attached to Substrate and must be connected to ANODE or left open. TL432, TL432A, TL432B . DBZ (SOT-23-3) PACKAGE TL431, TL431A, TL431B . DBZ (SOT-23-3) PACKAGE (TOP VIEW) (TOP VIEW) CATHODE 1 REF 1 3 ANODE 3 ANODE REF 2 CATHODE 2
Pin Functions PIN TLV431x TLV432x TYPE DESCRIPTION NAME P, PS DBZ DBV PK D LP KTP DCK DBZ DBV PK PW
CATHODE 1 3 3 1 1 1 1 1 2 4 1 I/O Shunt Current/Voltage input REF 2 4 1 8 8 3 3 3 1 5 3 I Threshold relative to common anode 2, 3, ANODE 3 5 2 6 2 2 6 3 2 2 O Common pin, normally connected to ground 6, 7 Copyright © 2004–2015, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: TL431 TL431A TL431B TL432 TL432A TL432B Document Outline 1 Features 2 Applications 3 Description 4 Simplified Schematic Table of Contents 5 Revision History 6 Pin Configuration and Functions 7 Specifications 7.1 Absolute Maximum Ratings 7.2 ESD Ratings 7.3 Thermal Information 7.4 Recommended Operating Conditions 7.5 Electrical Characteristics, TL431C, TL432C 7.6 Electrical Characteristics, TL431I, TL432I 7.7 Electrical Characteristics, TL431Q, TL432Q 7.8 Electrical Characteristics, TL431AC, TL432AC 7.9 Electrical Characteristics, TL431AI, TL432AI 7.10 Electrical Characteristics, TL431AQ, TL432AQ 7.11 Electrical Characteristics, TL431BC, TL432BC 7.12 Electrical Characteristics, TL431BI, TL432BI 7.13 Electrical Characteristics, TL431BQ, TL432BQ 7.14 Typical Characteristics 8 Parameter Measurement Information 9 Detailed Description 9.1 Overview 9.2 Functional Block Diagram 9.3 Feature Description 9.4 Device Functional Modes 9.4.1 Open Loop (Comparator) 9.4.2 Closed Loop 10 Applications and Implementation 10.1 Application Information 10.2 Typical Applications 10.2.1 Comparator With Integrated Reference 10.2.1.1 Design Requirements 10.2.1.2 Detailed Design Procedure 10.2.1.3 Application Curves 10.2.2 Shunt Regulator/Reference 10.2.2.1 Design Requirements 10.2.2.2 Detailed Design Procedure 10.2.2.3 Application Curves 10.3 System Examples 11 Power Supply Recommendations 12 Layout 12.1 Layout Guidelines 12.2 Layout Example 13 Device and Documentation Support 13.1 Related Links 13.2 Trademarks 13.3 Electrostatic Discharge Caution 13.4 Glossary 14 Mechanical, Packaging, and Orderable Information