TL431ACDM

Description：IC VREF SHUNT ADJ 1% 8SOIC
Series：-
Mfr：Microsemi Corporation
Package：Tube

SKU:dfbce6c987ad Category: Voltage Reference Brand: Microsemi Corporation

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Product introduction

Product Detailed Parameters

Description：IC VREF SHUNT ADJ 1% 8SOIC
Series：-
Mfr：Microsemi Corporation
Package：Tube
Output Type：Adjustable
Voltage - Output (Min/Fixed)：2.5V
Voltage - Output (Max)：36 V
Current - Output：100 mA
Operating Temperature：0°C ~ 70°C (TA)
Mounting Type：Surface Mount
Package / Case：8-SOIC (0.154", 3.90mm Width)
Supplier Device Package：8-SOIC
Grade：-
Qualification：-

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TL431ACDM

Overview

The TL431ACDM is a precision programmable shunt voltage regulator manufactured by Microsemi Corporation. It operates within an ambient temperature range of 0°C to 70°C and features an initial voltage reference accuracy of 1%. The device provides an adjustable output voltage from 2.5V to 36V using two external resistors. Key electrical characteristics include a typical output dynamic impedance of less than 200mΩ, a sink current capability ranging from 1mA to 100mA, and a typical equivalent full-range temperature coefficient of 30ppm/°C.

Feature Summary

Adjustable output voltage programmable via two external resistors
Low output noise and low output dynamic impedance for improved load regulation
Direct pin-to-pin replacement for industry standard TL431 and TL1431

Applications

Feedback path in switching power supplies
Overvoltage protection (OVP) crowbar circuits
Reference source for A/D and D/A converters
Zener diodes with improved turn-on characteristics

Procurement Notes

Verify component authenticity as the TL431ACDM is classified as obsolete by Microsemi. Confirm that the specific batch matches the required RoHS compliant transition DC codes (e.g., 0440). Ensure design teams utilize alternative components for new designs due to the product's discontinued status.

Selection Notes

Select this component only for maintenance or legacy system repairs where direct pin compatibility with existing TL431 footprints is mandatory. Evaluate thermal resistance parameters carefully, as the SOIC-8 package has a junction-to-ambient thermal resistance of 165 °C/W. Verify that the operating temperature range of 0°C to 70°C meets the environmental requirements of the target application.

Part Context

This part belongs to the TL431 series of precision programmable references produced by Microsemi Integrated Products Division. The 'A' suffix denotes a 1% initial voltage tolerance, while 'CDM' indicates the commercial temperature grade and the 8-pin Plastic SOIC surface-mount package. The series is designed to offer low output impedance and high stability across its operating range.

Replacement Considerations

Microsemi explicitly states this product is not recommended for new designs. Engineers should consult the manufacturer's website for current alternatives. Cross-reference with other manufacturers offering active production versions of the TL431 family if long-term supply continuity is required.