LP3879SD-1.2 Linear Voltage Regulator - Equivalent & Substitute Parts

Part Overview

The LP3879SD-1.2 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 1.2V output applications with 800mA current capability in an 8-WSON (4x4) surface mount package. This device provides regulated power with integrated protection features including over-current, over-temperature, and short-circuit protection.

The main part number LP3879SD-1.2 is classified as obsolete. For new designs and ongoing production requirements, identifying active equivalent parts is essential to ensure supply chain continuity and compliance with current manufacturing standards.

Substiute Parts

LP3879SD-1.2

Texas InstrumentsIn Stock: 3804LP3879SD-1.2 Datasheet

Current PartRFQ

LP3879SD-1.2/NOPB

Texas InstrumentsIn Stock: 1673LP3879SD-1.2/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LP3879SD-1.2 is determined by strict equivalence across the following critical parameters:

• Fixed output voltage of 1.2V
• Output current rating of 800mA
• Maximum input voltage of 6V
• Quiescent current of 1.4 mA
• PSRR specification of 60dB at 1kHz
• Operating temperature range of -40°C to 125°C
• 8-WDFN Exposed Pad package (8-WSON 4x4)
• Identical protection features (Over Current, Over Temperature, Short Circuit)
• Enable control feature

The LP3879SD-1.2/NOPB is a parametric equivalent that maintains all electrical and mechanical specifications while offering improved product status and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The LP3879SD-1.2/NOPB is the direct substitute for the obsolete LP3879SD-1.2. Both parts are manufactured by Texas Instruments and maintain identical electrical and mechanical specifications across all critical parameters.

The LP3879SD-1.2/NOPB offers two significant advantages:

• Product Status: Active production status ensures ongoing availability and supply chain reliability.
• Compliance: ROHS3 compliant certification meets current environmental and manufacturing standards, whereas the original part is RoHS non-compliant.

Both parts share identical REACH and ECCN classifications (REACH Unaffected, EAR99). The LP3879SD-1.2/NOPB is available in Cut Tape (CT) and Digi-Reel® packaging options, providing flexibility for different procurement and assembly workflows.

Frequently Asked Questions (FAQ)

Q: Can LP3879SD-1.2/NOPB be used as a direct replacement for LP3879SD-1.2?

A: Yes. The LP3879SD-1.2/NOPB is a parametric equivalent with identical electrical specifications (1.2V output, 800mA current, 6V maximum input, 60dB PSRR, -40°C to 125°C operating range) and mechanical compatibility (8-WDFN Exposed Pad package). Pin configuration and functional behavior are identical.

Q: What is the difference between LP3879SD-1.2 and LP3879SD-1.2/NOPB?

A: The primary differences are product status and compliance. LP3879SD-1.2 is obsolete and RoHS non-compliant. LP3879SD-1.2/NOPB is in active production and ROHS3 compliant. All electrical and mechanical parameters are identical.

Q: Are there packaging differences between these parts?

A: Both parts use the 8-WDFN Exposed Pad (8-WSON 4x4) package. The LP3879SD-1.2/NOPB is available in Cut Tape (CT) and Digi-Reel® packaging formats, offering options for different assembly and procurement requirements.

Q: What protection features are included in both parts?

A: Both the LP3879SD-1.2 and LP3879SD-1.2/NOPB include over-current, over-temperature, and short-circuit protection. Both feature an enable control input for power management applications.

Q: Is the LP3879SD-1.2/NOPB suitable for new designs?

A: Yes. The active product status and ROHS3 compliance make the LP3879SD-1.2/NOPB the appropriate choice for new designs requiring a 1.2V, 800mA linear regulator in the 8-WSON package.