LP3882EMR-1.2 Equivalent & Substitute Parts

Part Overview

The LP3882EMR-1.2 is a linear voltage regulator IC from Texas Instruments, classified as a Power Management (PMIC) component. It delivers a fixed positive output of 1.2V at 1.5A with integrated protection features including over-current, over-temperature, and short-circuit protection. The main part number is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The device operates across an industrial temperature range of -40°C to 125°C and is housed in an 8-PowerSOIC package with PowerPad thermal enhancement.

Substiute Parts

LP3882EMR-1.2

Texas InstrumentsIn Stock: 2085LP3882EMR-1.2 Datasheet

Current PartRFQ

LP3882EMR-1.2/NOPB

Texas InstrumentsIn Stock: 2329LP3882EMR-1.2/NOPB Datasheet

DirectRFQ

LP3892EMR-1.2/NOPB

National SemiconductorIn Stock: 1512LP3892EMR-1.2/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LP3882EMR-1.2 are classified into two categories based on substitution type and allowed parameter variance:

Direct Manufacturer Equivalent (LP3882EMR-1.2/NOPB): This part maintains identical electrical specifications across all critical parameters: output voltage, output current, input voltage maximum, quiescent current, PSRR, protection features, and operating temperature range. The primary difference is product status (Active vs. Obsolete) and RoHS compliance (ROHS3 Compliant vs. RoHS non-compliant). Packaging is specified as Tube versus unspecified for the main part. This substitution is valid for direct replacement in all applications.

Parametric Equivalent (LP3892EMR-1.2/NOPB): This National Semiconductor part maintains equivalence across output voltage (1.2V), output current (1.5A), input voltage maximum (5.5V), quiescent current (30 µA), PSRR, protection features, control features, operating temperature range, and package type. The key parameter variance is voltage dropout: 0.55V @ 1.5A versus 0.32V @ 1.5A for the main part. This represents a 0.23V increase in dropout voltage. Substitution is valid where the application's input voltage headroom accommodates the higher dropout specification.

Parameter Comparison

Engineering Selection Recommendations

LP3882EMR-1.2/NOPB (Direct Equivalent): This part is the primary substitute for the obsolete LP3882EMR-1.2. It is manufactured by Texas Instruments with Active product status, ensuring long-term availability and supply chain stability. The part is ROHS3 Compliant, meeting modern regulatory requirements. All electrical parameters are identical to the main part, including the 0.32V dropout specification. This part is suitable for all applications where the LP3882EMR-1.2 was originally specified. Inventory availability is confirmed at 2276 pieces.

LP3892EMR-1.2/NOPB (Parametric Equivalent): This National Semiconductor part maintains functional equivalence with a documented variance in voltage dropout (0.55V @ 1.5A versus 0.32V @ 1.5A). Selection of this part is valid only when the application's input voltage headroom is sufficient to accommodate the additional 0.23V dropout. Product status is Active, ensuring availability. This part is suitable as a secondary substitute when LP3882EMR-1.2/NOPB is unavailable. Inventory availability is confirmed at 1408 pieces.

Frequently Asked Questions (FAQ)

Q: Can LP3882EMR-1.2/NOPB be used as a direct replacement for LP3882EMR-1.2?

A: Yes. LP3882EMR-1.2/NOPB is a direct equivalent with identical electrical specifications. The primary differences are product status (Active vs. Obsolete), RoHS compliance (ROHS3 Compliant), and packaging specification (Tube). All functional parameters, including output voltage, current rating, dropout voltage, and protection features, are identical.

Q: What is the key difference between LP3882EMR-1.2/NOPB and LP3892EMR-1.2/NOPB?

A: The primary difference is voltage dropout specification. LP3882EMR-1.2/NOPB has a maximum dropout of 0.32V @ 1.5A, while LP3892EMR-1.2/NOPB has a maximum dropout of 0.55V @ 1.5A. All other electrical parameters, including output voltage (1.2V), output current (1.5A), and protection features, are identical. The higher dropout of the LP3892 requires greater input voltage headroom.

Q: Can LP3892EMR-1.2/NOPB be used in place of LP3882EMR-1.2/NOPB?

A: LP3892EMR-1.2/NOPB is a parametric equivalent suitable for substitution only when the application's input voltage margin accommodates the 0.55V dropout specification. If the original design operated with minimal input voltage headroom, the higher dropout may cause the output voltage to fall below the 1.2V specification under maximum load conditions. Verify input voltage availability before substitution.

Q: Are all three parts housed in the same package?

A: Yes. All three parts—LP3882EMR-1.2, LP3882EMR-1.2/NOPB, and LP3892EMR-1.2/NOPB—are housed in the 8-PowerSOIC package (0.154", 3.90mm Width) with Surface Mount mounting type. PCB layout and footprint compatibility are maintained across all three parts.

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

A: The /NOPB suffix indicates "No Plumbum" (lead-free) packaging, reflecting RoHS compliance. LP3882EMR-1.2/NOPB is ROHS3 Compliant, meeting current environmental and regulatory standards for electronic components.

Q: What protection features are included in these regulators?

A: All three parts include integrated protection against over-current, over-temperature, and short-circuit conditions. These features protect the regulator and downstream circuitry from fault conditions.

Q: What is the operating temperature range for these parts?

A: All three parts operate across an industrial temperature range of -40°C to 125°C, suitable for automotive, industrial, and consumer applications requiring extended temperature performance.