LP3882EMR-1.8 Equivalent & Substitute Parts

Part Overview

The LP3882EMR-1.8 is a linear voltage regulator IC from Texas Instruments, delivering a fixed 1.8V output at 1.5A with integrated protection features including over-current, over-temperature, and short-circuit protection. The device operates across the industrial temperature range of -40°C to 125°C and is housed in an 8-PowerSOIC package.

This part is currently listed as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for applications utilizing this regulator topology.

Substiute Parts

LP3882EMR-1.8

Texas InstrumentsIn Stock: 3660LP3882EMR-1.8 Datasheet

Current PartRFQ

LP3882EMR-1.8/NOPB

National SemiconductorIn Stock: 5783LP3882EMR-1.8/NOPB Datasheet

DirectRFQ

LP3892EMR-1.8/NOPB

Texas InstrumentsIn Stock: 1244LP3892EMR-1.8/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LP3882EMR-1.8 are identified based on strict electrical and mechanical parameter matching:

Critical Parameters for Substitution:

• Fixed output voltage of 1.8V
• Output current capability of 1.5A
• Maximum input voltage of 5.5V
• 8-PowerSOIC package footprint compatibility
• Identical protection feature set (over-current, over-temperature, short-circuit)
• Enable control functionality
• Operating temperature range of -40°C to 125°C

Parts are grouped into two categories: direct manufacturer equivalents and parametric equivalents. Direct equivalents maintain identical electrical specifications. Parametric equivalents meet all functional requirements but may exhibit variations in secondary parameters such as dropout voltage, which remain within acceptable operational limits for the intended application.

Parameter Comparison

Engineering Selection Recommendations

LP3882EMR-1.8/NOPB (Direct Equivalent): This part is the direct substitute for the obsolete LP3882EMR-1.8. It maintains identical electrical specifications including the 0.32V dropout voltage at 1.5A and is currently in active production status. The part is available in bulk packaging and offers the highest inventory availability (5687 pcs). Selection of this part eliminates design modifications and provides immediate supply chain continuity.

LP3892EMR-1.8/NOPB (Parametric Equivalent): This part meets all functional requirements with identical output voltage, current, and protection features. The primary difference is an increased dropout voltage of 0.55V at 1.5A compared to 0.32V in the original specification. This part is ROHS3 compliant and available in active production status. Selection requires verification that the higher dropout voltage does not impact thermal performance or system efficiency in the target application. This option is suitable for designs where regulatory compliance with RoHS3 is a requirement.

Frequently Asked Questions (FAQ)

Q: Can LP3882EMR-1.8/NOPB be used as a direct replacement for LP3882EMR-1.8?

A: Yes. The LP3882EMR-1.8/NOPB is a direct equivalent with identical electrical specifications, package footprint, and functional characteristics. No circuit modifications are required.

Q: What is the difference between LP3882EMR-1.8/NOPB and LP3892EMR-1.8/NOPB?

A: Both parts deliver 1.8V at 1.5A in the same 8-PowerSOIC package. The LP3892EMR-1.8/NOPB has a higher dropout voltage of 0.55V compared to 0.32V in the LP3882EMR-1.8/NOPB. The LP3892EMR-1.8/NOPB is ROHS3 compliant, while the LP3882EMR-1.8/NOPB compliance status is not specified.

Q: Are all substitute parts pin-compatible?

A: Yes. All listed substitute parts use the 8-PowerSOIC package with identical pinout and footprint dimensions (0.154", 3.90mm width), ensuring direct PCB compatibility without layout modifications.

Q: Which substitute part should be selected for new designs?

A: Selection depends on specific requirements. For direct replacement of existing designs, use LP3882EMR-1.8/NOPB. For applications requiring RoHS3 compliance, use LP3892EMR-1.8/NOPB, provided the higher dropout voltage is acceptable for thermal and efficiency requirements.

Q: Do all substitute parts support the Enable control feature?

A: Yes. All listed substitute parts include Enable control functionality, maintaining identical control interface compatibility with the original design.