LM317LCPWRE4 Equivalent & Substitute Parts

Part Overview

The LM317LCPWRE4 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 general-purpose power management circuits requiring regulated DC supply.

The LM317LCPWRE4 is currently discontinued at DiGi Electronics. Identifying equivalent substitute parts ensures design continuity and maintains supply chain reliability for applications requiring this regulator topology.

Substiute Parts

LM317LCPWRE4

Texas InstrumentsIn Stock: 676LM317LCPWRE4 Datasheet

Current PartRFQ

LM317LCPWR

Texas InstrumentsIn Stock: 4464LM317LCPWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM317LCPWRE4 is determined by strict equivalence across the following critical parameters:

• Output configuration (Positive)
• Output type (Adjustable)
• Voltage specifications (Input Max: 38V, Output Min: 1.2V, Output Max: 32V)
• Current rating (100mA output)
• Quiescent current (2.5 mA)
• Protection features (Over Current, Over Temperature, Short Circuit)
• Operating temperature range (0°C ~ 125°C)
• Package type (8-TSSOP)
• Compliance standards (ROHS3, MSL 1)

The LM317LCPWR qualifies as a direct substitute based on identical electrical specifications and package configuration. The primary distinction is packaging format and product status.

Parameter Comparison

Engineering Selection Recommendations

The LM317LCPWR is electrically and mechanically equivalent to the LM317LCPWRE4 across all specified parameters. Both parts maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with standard manufacturing and storage requirements.

The LM317LCPWR offers expanded packaging availability (Cut Tape and Digi-Reel options) compared to the main part. With 4371 units in stock versus 634 units for the discontinued LM317LCPWRE4, the LM317LCPWR provides superior supply chain availability while maintaining identical functional and electrical characteristics.

Frequently Asked Questions (FAQ)

Q: Can the LM317LCPWR be used as a direct replacement for the LM317LCPWRE4?

A: Yes. Both parts are manufactured by Texas Instruments with identical electrical specifications, output characteristics, protection features, and 8-TSSOP package configuration. No circuit modifications are required.

Q: Are there differences in packaging between these parts?

A: The LM317LCPWRE4 is supplied in Digi-Reel format. The LM317LCPWR is available in both Cut Tape (CT) and Digi-Reel formats, providing flexibility in packaging selection based on assembly requirements.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the LM317LCPWRE4 and LM317LCPWR are ROHS3 compliant with MSL 1 rating, REACH unaffected status, and EAR99 ECCN classification.

Q: What is the significance of the product status difference?

A: The LM317LCPWRE4 is discontinued at DiGi Electronics, indicating end-of-life status. The LM317LCPWR carries Last Time Buy status, meaning limited future availability. For new designs or long-term production, secure inventory of the LM317LCPWR while available.

Q: Are the electrical performance characteristics identical?

A: Yes. Both parts deliver 100mA output current, support 1.2V to 32V adjustable output range, maintain 2.5mA quiescent current, and provide identical PSRR performance (80dB ~ 65dB at 120Hz) and protection features.