TL317CDR Equivalent & Substitute Parts

Part Overview

The TL317CDR is a linear voltage regulator IC from Texas Instruments designed for positive adjustable output applications. It delivers 100mA output current with an adjustable voltage range from 1.2V to 32V, making it suitable for various power management applications requiring regulated DC supply. The device is currently in Last Time Buy status, indicating end-of-life production. Identifying equivalent substitute parts ensures design continuity and supply chain reliability for applications currently using this component.

Substiute Parts

TL317CDR

Texas InstrumentsIn Stock: 90847TL317CDR Datasheet

Current PartRFQ

LM317LCDR

Texas InstrumentsIn Stock: 2782LM317LCDR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TL317CDR is determined by strict equivalence across the following critical parameters:

• Output configuration (Positive)
• Output type (Adjustable)
• Voltage specifications (Input Max: 38V, Output range: 1.2V to 32V)
• Current rating (100mA)
• Package type (8-SOIC)
• Operating temperature range (0°C ~ 125°C)
• Compliance certifications (ROHS3, REACH Unaffected)

The LM317LCDR meets all these criteria and is classified as the manufacturer-recommended substitute. Both devices share the same base product number (TL317 vs LM317) and are produced by Texas Instruments, ensuring functional and electrical compatibility within the specified parameter envelope.

Parameter Comparison

Engineering Selection Recommendations

The LM317LCDR is the direct substitute for the TL317CDR based on electrical and mechanical parameter equivalence. Both devices maintain identical voltage specifications, current ratings, and package configurations. The LM317LCDR carries Active product status, ensuring continued availability and supply chain support, whereas the TL317CDR is in Last Time Buy status. Both components meet ROHS3 compliance and REACH unaffected requirements, satisfying regulatory requirements for new designs and production transitions. The LM317LCDR provides additional short-circuit protection compared to the TL317CDR, offering enhanced reliability without compromising compatibility.

Frequently Asked Questions (FAQ)

Q: Can the LM317LCDR directly replace the TL317CDR in existing designs?

A: Yes. Both devices share identical electrical specifications across voltage range (1.2V to 32V), output current (100mA), input voltage rating (38V max), and package configuration (8-SOIC). Pin-to-pin compatibility and functional equivalence are maintained.

Q: What is the difference in product status between these parts?

A: The TL317CDR is in Last Time Buy status, indicating discontinued production. The LM317LCDR is Active, ensuring ongoing availability and supply chain continuity for new orders and production runs.

Q: Are there differences in protection features?

A: The LM317LCDR includes short-circuit protection in addition to over-current and over-temperature protection found in the TL317CDR. This enhancement does not affect compatibility or require circuit modifications.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the TL317CDR and LM317LCDR are ROHS3 compliant and REACH unaffected, meeting identical regulatory requirements for manufacturing and distribution.

Q: Is the package footprint identical?

A: Yes. Both devices use the 8-SOIC package with 0.154" width (3.90mm), ensuring identical PCB layout compatibility without design modifications.