LP5918A33YENR Equivalent & Substitute Parts

Part Overview

The LP5918A33YENR is a linear voltage regulator manufactured by Texas Instruments, classified as a prototype component with an uncategorized detailed designation. This part is currently obsolete and no longer in active production. Due to its obsolete status, identification of functionally equivalent substitute components is necessary for design continuity, system maintenance, and component procurement. The part maintains ROHS3 compliance and carries an MSL rating of 1 (Unlimited), indicating minimal moisture sensitivity concerns during storage and handling.

Substiute Parts

LP5918A33YENR

Texas InstrumentsIn Stock: 1033LP5918A33YENR Datasheet

Current PartRFQ

TPS7A2133PYWDJ

Texas InstrumentsIn Stock: 4195TPS7A2133PYWDJ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete LP5918A33YENR is based on functional equivalence within the linear voltage regulator category. The primary substitute identified is the TPS7A2133PYWDJ, also manufactured by Texas Instruments. This substitution is valid based on the following criteria:

Key Parameters Determining Substitution:

• Output Configuration: Positive fixed output
• Number of Regulators: Single output
• Output Voltage: 3.3V fixed
• Output Current Capability: 500mA
• Quiescent Current: Low-IQ operation (15 µA)
• Dropout Voltage: Low-dropout characteristics (0.175V @ 500mA)
• Protection Features: Over Current, Over Temperature, UVLO
• Control Features: Current Limit, Enable
• Operating Temperature Range: -40°C ~ 125°C
• RoHS Compliance: ROHS3 Compliant
• Moisture Sensitivity: MSL 1 (Unlimited)

The TPS7A2133PYWDJ maintains functional parity across all critical electrical parameters while offering active product status and continued manufacturer support.

Parameter Comparison

Engineering Selection Recommendations

The TPS7A2133PYWDJ is the designated manufacturer-recommended substitute for the obsolete LP5918A33YENR. Selection of this substitute is supported by the following factors:

Product Status: The TPS7A2133PYWDJ maintains active product status with Texas Instruments, ensuring continued availability, technical support, and manufacturing consistency. The LP5918A33YENR, classified as obsolete, presents long-term supply chain risk.

Compliance and Certifications: Both components maintain MSL 1 (Unlimited) moisture sensitivity ratings, indicating equivalent handling and storage requirements. The TPS7A2133PYWDJ carries ECCN EAR99 and HTSUS 8542.39.0001 classifications, establishing its regulatory standing for international distribution.

Electrical Equivalence: Functional parameters including output voltage (3.3V fixed), output current (500mA), operating temperature range (-40°C ~ 125°C), and protection features (Over Current, Over Temperature, UVLO) are equivalent between the two components.

Packaging Consideration: The TPS7A2133PYWDJ is supplied in 4-WCSP (0.63x0.63) packaging. Physical footprint compatibility must be verified against the original LP5918A33YENR PCB layout prior to implementation.

Frequently Asked Questions (FAQ)

Q: Why is the LP5918A33YENR classified as obsolete? A: The LP5918A33YENR has reached end-of-life status with Texas Instruments and is no longer in active production. Obsolete classification indicates that new manufacturing has ceased, though existing inventory may remain available from authorized distributors.

Q: What are the primary electrical parameters that make TPS7A2133PYWDJ a valid substitute? A: The TPS7A2133PYWDJ matches the LP5918A33YENR across critical parameters: 3.3V fixed positive output, 500mA output current, low quiescent current (15 µA), low dropout voltage (0.175V @ 500mA), identical operating temperature range (-40°C ~ 125°C), and equivalent protection features (Over Current, Over Temperature, UVLO).

Q: Are there packaging differences between these components? A: The TPS7A2133PYWDJ is packaged in 4-WCSP (0.63x0.63) format. The original LP5918A33YENR packaging specification is not provided in available documentation. Physical footprint verification is required before PCB implementation.

Q: Does the TPS7A2133PYWDJ require design modifications? A: Electrical functionality is equivalent, requiring no circuit topology changes. PCB layout modifications may be necessary if package footprints differ. Pin configuration and control signal compatibility must be verified against original schematic documentation.

Q: What is the moisture sensitivity level for both components? A: Both the LP5918A33YENR and TPS7A2133PYWDJ carry MSL 1 (Unlimited) ratings, indicating no moisture sensitivity restrictions during storage, handling, or assembly processes.

Q: Is the TPS7A2133PYWDJ RoHS compliant? A: The TPS7A2133PYWDJ carries "Not applicable" RoHS status in manufacturer documentation. The LP5918A33YENR is ROHS3 compliant. Regulatory compliance verification is required for specific application requirements.

Q: What inventory status should be considered for procurement? A: The LP5918A33YENR has 995 pieces available from current stock. The TPS7A2133PYWDJ has 4096 pieces available, providing greater supply security for new designs and production runs.