Datasheet TLV431, TLV431A, TLV431B (Texas Instruments) - 3

TLV431 , TLV431A, TLV431B www.ti.com
SLVS139W – JULY 1996 – REVISED MARCH 2018
5 Pin Configuration and Functions D (SOIC) PACKAGE DBV (SOT-23-5) PACKAGE DBZ (SOT-23-3) PACKAGE (TOP VIEW) (TOP VIEW) (TOP VIEW)
CATHODE 1 8 REF NC 1 5 ANODE REF 1 ANODE 2 7 ANODE 2 ∗ 3 ANODE ANODE 3 6 ANODE CATHODE 3 4 REF CATHODE 2 4 5 NC NC NC − No internal connection ∗ For TLV431, TLV431A: NC − No internal connection ∗ For TLV431B: Pin 2 is attached to Substrate and must be connected to ANODE or left open.
PK (SOT-89) PACKAGE DCK (SC-70) PACKAGE LP (TO-92/TO-226) PACKAGE (TOP VIEW) (TOP VIEW) (TOP VIEW)
3 CATHODE CATHODE 1 6 ANODE CATHODE NC 2 5 NC ANODE 2 ANODE ANODE REF 3 4 NC REF 1 REF NC − No internal connection
Pin Functions PIN TYPE DESCRIPTION NAME DBZ DBV PK D LP DCK
CATHODE 2 3 3 1 1 1 I/O Shunt Current/Voltage input REF 1 4 1 8 3 3 I Threshold relative to common anode ANODE 3 5 2 2, 3, 6, 7 2 6 O Common pin, normally connected to ground NC — 1 — 4, 5 — 2, 4, 5 I No Internal Connection * — 2 — — — — I Substrate Connection Copyright © 1996–2018, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: TLV431 TLV431A TLV431B Document Outline 1 Features 2 Applications 3 Description Table of Contents 4 Revision History 5 Pin Configuration and Functions 6 Specifications 6.1 Absolute Maximum Ratings 6.2 ESD Ratings 6.3 Recommended Operating Conditions 6.4 Thermal Information 6.5 Electrical Characteristics for TLV431 6.6 Electrical Characteristics for TLV431A 6.7 Electrical Characteristics for TLV431B 6.8 Typical Characteristics 7 Parameter Measurement Information 8 Detailed Description 8.1 Overview 8.2 Functional Block Diagram 8.3 Feature Description 8.4 Device Functional Modes 8.4.1 Open Loop (Comparator) 8.4.2 Closed Loop 9 Applications and Implementation 9.1 Application Information 9.2 Typical Applications 9.2.1 Comparator With Integrated Reference (Open Loop) 9.2.1.1 Design Requirements 9.2.1.2 Detailed Design Procedure 9.2.1.3 Application Curves 9.2.2 Shunt Regulator/Reference 9.2.2.1 Design Requirements 9.2.2.2 Detailed Design Procedure 9.2.2.3 Application Curve 10 Power Supply Recommendations 11 Layout 11.1 Layout Guidelines 11.2 Layout Example 12 Device and Documentation Support 12.1 Documentation Support 12.1.1 Related Documentation 12.2 Related Links 12.3 Receiving Notification of Documentation Updates 12.4 Community Resources 12.5 Trademarks 12.6 Electrostatic Discharge Caution 12.7 Glossary 13 Mechanical, Packaging, and Orderable Information