LP3892EMRX-1.2 Equivalent & Substitute Parts

Part Overview

The LP3892EMRX-1.2 is a linear voltage regulator IC from Texas Instruments designed for positive fixed output applications. This device delivers 1.5A output current at a fixed 1.2V output with a maximum dropout voltage of 0.55V at full load. The part integrates over-current, over-temperature, and short-circuit protection features, making it suitable for low-voltage power management applications requiring stable regulation and thermal safeguards.

The LP3892EMRX-1.2 is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this regulator.

Substiute Parts

LP3892EMRX-1.2

Texas InstrumentsIn Stock: 2899LP3892EMRX-1.2 Datasheet

Current PartRFQ

LP3892EMRX-1.2/NOPB

Texas InstrumentsIn Stock: 1557LP3892EMRX-1.2/NOPB Datasheet

DirectRFQ

LP3882EMRX-1.2/NOPB

Texas InstrumentsIn Stock: 732LP3882EMRX-1.2/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LP3892EMRX-1.2 are identified based on strict electrical and mechanical parameter matching within the linear regulator category. The substitution logic is based on the following critical parameters:

• Fixed output voltage of 1.2V
• Output current capability of 1.5A
• Maximum input voltage of 5.5V
• Operating temperature range of -40°C to 125°C
• 8-PowerSOIC package form factor
• Integrated protection features (over-current, over-temperature, short-circuit)
• Surface mount configuration

Two substitute parts meet these criteria: LP3892EMRX-1.2/NOPB (direct manufacturer equivalent with different packaging and compliance status) and LP3882EMRX-1.2/NOPB (parametric equivalent with improved dropout voltage performance).

Parameter Comparison

Engineering Selection Recommendations

LP3892EMRX-1.2/NOPB is the direct manufacturer equivalent and primary substitute. This part maintains identical electrical specifications and package configuration while offering active product status and RoHS3 compliance. The /NOPB designation indicates lead-free construction, aligning with modern manufacturing standards. This substitute is recommended for applications requiring direct pin-for-pin and functional compatibility with minimal design modification.

LP3882EMRX-1.2/NOPB is a parametric equivalent offering superior dropout voltage performance at 0.32V compared to the original 0.55V specification. This improved characteristic reduces power dissipation and thermal stress in the regulator, beneficial for applications operating near maximum input-to-output voltage differential. This part also maintains active status and RoHS3 compliance. Selection of this substitute is appropriate when thermal performance or efficiency improvements are advantageous within the system design.

Both substitute parts are manufactured by Texas Instruments, maintain identical output current and voltage specifications, and are available in the same 8-PowerSOIC package. Both comply with RoHS3 and REACH requirements, supporting modern supply chain and environmental compliance mandates.

Frequently Asked Questions (FAQ)

Q: Can LP3892EMRX-1.2/NOPB be used as a direct replacement for LP3892EMRX-1.2?

A: Yes. LP3892EMRX-1.2/NOPB is electrically and mechanically identical to the original part. Both deliver 1.5A at 1.2V fixed output with 0.55V maximum dropout voltage. The primary differences are product status (active vs. obsolete) and RoHS compliance (RoHS3 vs. non-compliant). No circuit modifications are required for substitution.

Q: What is the advantage of LP3882EMRX-1.2/NOPB over LP3892EMRX-1.2/NOPB?

A: LP3882EMRX-1.2/NOPB features a lower maximum dropout voltage of 0.32V at 1.5A, compared to 0.55V for the LP3892 series. This reduced dropout improves efficiency and reduces thermal dissipation, particularly in applications where input-to-output voltage margin is limited. All other electrical and mechanical parameters remain equivalent.

Q: Are package dimensions identical across all three parts?

A: Yes. All three parts use the 8-PowerSOIC package with 0.154" width and 3.90mm overall width. PCB layout and footprint compatibility are maintained across all substitutes.

Q: What is the significance of the /NOPB suffix?

A: The /NOPB designation indicates lead-free (Pb-free) construction and RoHS3 compliance. This suffix reflects modern manufacturing standards and environmental regulations. Parts without this suffix may contain lead and do not meet current RoHS requirements.

Q: Can these parts be used interchangeably in existing designs?

A: LP3892EMRX-1.2/NOPB provides direct interchangeability with no design changes required. LP3882EMRX-1.2/NOPB is also pin-compatible and functionally compatible but offers improved dropout voltage performance. Both are suitable for new designs and retrofit applications.

Q: What is the moisture sensitivity level, and why does it matter?

A: All three parts carry MSL 3 rating with a 168-hour floor life. This indicates moderate moisture sensitivity requiring controlled storage and handling conditions. Components must be stored in dry environments and baked before reflow soldering if exposed to humidity beyond specified limits.