LP3872ES-5.0 Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The LP3872ES-5.0 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 5V output applications with 1.5A current capacity in a TO-263 (DDPAK-5) surface mount package. This part is classified as "Not For New Designs," indicating it has been superseded in the product lifecycle. Finding equivalent and substitute parts is necessary for legacy system support, design continuity, and inventory management when the original part becomes unavailable or when design requirements favor active product status alternatives.

Substiute Parts

LP3872ES-5.0

Texas InstrumentsIn Stock: 5652LP3872ES-5.0 Datasheet

Current PartRFQ

LP3872ES-5.0/NOPB

Texas InstrumentsIn Stock: 838LP3872ES-5.0/NOPB Datasheet

DirectRFQ

LP3852ES-5.0/NOPB

Texas InstrumentsIn Stock: 1052LP3852ES-5.0/NOPB Datasheet

Parametric EquivalentRFQ

LP3855ES-5.0/NOPB

Texas InstrumentsIn Stock: 844LP3855ES-5.0/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LP3872ES-5.0 is determined by the following critical parameters that must remain constant or equivalent:

Electrical Compatibility Requirements:

• Output voltage: 5V fixed
• Output current capacity: 1.5A minimum
• Input voltage maximum: 7V
• Package type: TO-263 (DDPAK-5) surface mount
• Protection features: Over Current, Over Temperature, Short Circuit
• Operating temperature range: -40°C to 125°C

Substitution Categories:

1. Direct Manufacturer Equivalent (LP3872ES-5.0/NOPB): Identical electrical specifications with active product status and RoHS3 compliance. Pin-compatible, form-factor identical, and functionally interchangeable.

2. Parametric Equivalents (LP3852ES-5.0/NOPB, LP3855ES-5.0/NOPB): Meet or exceed core electrical requirements with improved performance characteristics (lower dropout voltage, reduced quiescent current). Identical package, pin configuration, and output specifications. Active product status with RoHS3 compliance.

All substitute parts maintain identical mechanical compatibility and electrical output specifications required for direct replacement in existing designs.

Parameter Comparison

Engineering Selection Recommendations

For Legacy System Support: LP3872ES-5.0/NOPB is the direct equivalent with identical electrical specifications. This part maintains exact compatibility with existing designs while offering active product status and RoHS3 compliance, making it suitable for replacement in legacy systems requiring the original part's exact performance characteristics.

For New Designs or System Upgrades: LP3852ES-5.0/NOPB or LP3855ES-5.0/NOPB are recommended as primary selections. Both parts deliver superior performance with reduced dropout voltage (0.38V vs. 0.55V) and lower quiescent current (3 mA vs. 5 mA), resulting in improved thermal efficiency and reduced power dissipation. Both maintain active product status and RoHS3 compliance, ensuring long-term availability and regulatory alignment.

Compliance Considerations: All substitute parts carry RoHS3 compliance and REACH unaffected status. The original LP3872ES-5.0 is RoHS non-compliant; substitution with any listed equivalent ensures regulatory compliance for new production or system updates.

Frequently Asked Questions (FAQ)

Q: Can LP3872ES-5.0/NOPB directly replace LP3872ES-5.0 in existing designs? A: Yes. LP3872ES-5.0/NOPB is the direct manufacturer equivalent with identical electrical specifications, pin configuration, and package type. It is a pin-for-pin, form-factor compatible replacement.

Q: What is the difference between LP3872ES-5.0/NOPB and LP3852ES-5.0/NOPB? A: Both deliver 5V at 1.5A output in identical TO-263 packages. LP3852ES-5.0/NOPB offers improved performance with lower dropout voltage (0.38V vs. 0.55V) and reduced quiescent current (3 mA vs. 5 mA). Electrical output and protection features remain equivalent.

Q: Are LP3852ES-5.0/NOPB and LP3855ES-5.0/NOPB interchangeable? A: Yes. Both parts have identical electrical specifications, output voltage, current capacity, dropout voltage, quiescent current, and package configuration. They are functionally equivalent and mechanically interchangeable.

Q: Can these parts be used in applications requiring RoHS compliance? A: LP3872ES-5.0/NOPB, LP3852ES-5.0/NOPB, and LP3855ES-5.0/NOPB are all RoHS3 compliant. The original LP3872ES-5.0 is RoHS non-compliant. Use any of the three substitute parts for RoHS-compliant applications.

Q: What is the significance of the "/NOPB" suffix? A: The "/NOPB" suffix indicates the part is supplied without plumbum (lead-free), consistent with RoHS3 compliance requirements.

Q: Are all substitute parts available in the same packaging format? A: Yes. All substitute parts use TO-263-6 (D2PAK with 5 Leads + Tab) surface mount packaging, identical to the original LP3872ES-5.0.

Q: Which substitute part should be selected for thermal optimization? A: LP3852ES-5.0/NOPB or LP3855ES-5.0/NOPB are preferred for thermal optimization due to lower dropout voltage (0.38V) and reduced quiescent current (3 mA), resulting in decreased power dissipation compared to LP3872ES-5.0 or LP3872ES-5.0/NOPB.