LP38693MPX-5.0 Linear Voltage Regulator IC Equivalent & Substitute Parts

Part Overview

The LP38693MPX-5.0 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 5V output applications with 500mA current capacity in SOT-223-5 surface mount packaging. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity. Substitute parts must maintain identical electrical performance and mechanical compatibility while offering active product status for long-term availability.

Substiute Parts

LP38693MPX-5.0

Texas InstrumentsIn Stock: 19508LP38693MPX-5.0 Datasheet

Current PartRFQ

LP38693MP-5.0/NOPB

Texas InstrumentsIn Stock: 25008LP38693MP-5.0/NOPB Datasheet

Parametric EquivalentRFQ

LP38693MPX-5.0/NOPB

Texas InstrumentsIn Stock: 1666LP38693MPX-5.0/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LP38693MPX-5.0 are identified based on strict parametric equivalence across all critical electrical and mechanical specifications. The substitution criteria include:

• Fixed 5V output voltage configuration
• 500mA output current rating
• Maximum 10V input voltage specification
• 0.45V maximum dropout voltage at 500mA
• 55 µA quiescent current
• 55dB PSRR at 120Hz
• SOT-223-5 package compatibility
• Enable control feature
• Over temperature protection
• Operating temperature range of -40°C to 125°C

Two parametric equivalents meet all substitution requirements: LP38693MP-5.0/NOPB and LP38693MPX-5.0/NOPB. Both variants share identical electrical specifications and package configuration, differing only in product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

Both LP38693MP-5.0/NOPB and LP38693MPX-5.0/NOPB are direct parametric equivalents to the obsolete LP38693MPX-5.0. Selection between these two active alternatives should be based on procurement requirements and compliance mandates:

LP38693MP-5.0/NOPB offers ROHS3 compliance with Cut Tape and Digi-Reel packaging options, suitable for applications requiring flexible order quantities and regulatory compliance certification.

LP38693MPX-5.0/NOPB provides ROHS3 compliance with Tape & Reel packaging, optimized for high-volume automated assembly processes.

Both variants eliminate the obsolescence risk associated with the original part while maintaining complete electrical and mechanical compatibility. Selection should prioritize active product status and ROHS3 compliance over the non-compliant original specification.

Frequently Asked Questions (FAQ)

Q: Are LP38693MP-5.0/NOPB and LP38693MPX-5.0/NOPB electrically identical to LP38693MPX-5.0?

A: Yes. Both substitute parts maintain identical electrical specifications including 5V fixed output, 500mA current capacity, 0.45V maximum dropout voltage, 55 µA quiescent current, and 55dB PSRR at 120Hz. All three parts share the same base product number LP38693 and operate within the identical -40°C to 125°C temperature range.

Q: What is the difference between the two substitute parts?

A: The primary differences are packaging format and inventory availability. LP38693MP-5.0/NOPB is supplied in Cut Tape and Digi-Reel formats for flexible quantities, while LP38693MPX-5.0/NOPB is supplied in Tape & Reel format for automated assembly. Both are ROHS3 compliant and active products.

Q: Can I use these substitutes as direct replacements on existing PCBs?

A: Yes. All three parts use identical SOT-223-5 packaging (TO-261-5, TO-261AB), ensuring pin-for-pin compatibility and identical PCB footprints. No layout modifications are required.

Q: Why is the original LP38693MPX-5.0 marked as obsolete?

A: The original part carries RoHS non-compliant status. The active substitutes LP38693MP-5.0/NOPB and LP38693MPX-5.0/NOPB provide ROHS3 compliant alternatives, representing the current product line continuation.

Q: Which substitute should I select for new designs?

A: Either LP38693MP-5.0/NOPB or LP38693MPX-5.0/NOPB is appropriate for new designs. Selection depends on procurement volume requirements and assembly process capabilities. Both offer active product status and regulatory compliance.