LP2960IMX-3.3 Equivalent & Substitute Parts

Part Overview

The LP2960IMX-3.3 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 3.3V output applications. This device delivers 500mA output current in a 16-SOIC surface mount package and includes integrated protection features for over-current, over-temperature, and reverse polarity conditions. The main part is classified as obsolete, making substitute parts necessary for ongoing production and maintenance applications. The LP2960IMX-3.3/NOPB variant from National Semiconductor provides functional equivalence with active product status.

Substiute Parts

LP2960IMX-3.3

Texas InstrumentsIn Stock: 5170LP2960IMX-3.3 Datasheet

Current PartRFQ

LP2960IMX-3.3/NOPB

National SemiconductorIn Stock: 3844LP2960IMX-3.3/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LP2960IMX-3.3 is determined by strict equivalence across the following critical parameters:

• Fixed output voltage of 3.3V
• Output current rating of 500mA
• Maximum input voltage of 30V
• Voltage dropout specification of 0.8V @ 500mA
• Quiescent current of 600 µA
• Operating temperature range of -40°C to 125°C
• 16-SOIC package configuration (0.154", 3.90mm Width)
• Identical protection features: Over Current, Over Temperature, Reverse Polarity
• Enable control feature availability
• Surface mount mounting type

The LP2960IMX-3.3/NOPB meets all these criteria and qualifies as a direct substitute. The primary distinction is product status: the original part is obsolete while the substitute maintains active status.

Parameter Comparison

Engineering Selection Recommendations

The LP2960IMX-3.3/NOPB is the qualified substitute for the obsolete LP2960IMX-3.3. Selection between these parts should be based on availability and product lifecycle requirements:

• For new designs and ongoing production: Use LP2960IMX-3.3/NOPB due to active product status and continued manufacturer support.
• For legacy system maintenance: The LP2960IMX-3.3 remains functionally equivalent if inventory is available, though long-term sourcing is not guaranteed.

Both parts share identical electrical specifications, package configuration, and protection characteristics. The NOPB variant includes lead-free processing compliance, which aligns with modern manufacturing standards. Export classification (EAR99) and tariff codes are equivalent for both parts.

Frequently Asked Questions (FAQ)

Q: Can LP2960IMX-3.3/NOPB replace LP2960IMX-3.3 in existing designs?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters. The 16-SOIC package footprint, pinout, and functional behavior are equivalent. No circuit modifications are required.

Q: What does the /NOPB suffix indicate?

A: The /NOPB designation indicates lead-free (No Lead) and halogen-free processing. This is a manufacturing and compliance variant of the same base part number LP2960IMX-3.3.

Q: Why is the original LP2960IMX-3.3 listed as obsolete?

A: Product obsolescence reflects the manufacturer's end-of-life decision. Texas Instruments has discontinued this part in favor of newer alternatives or consolidated product lines. The LP2960IMX-3.3/NOPB from National Semiconductor provides functional continuity.

Q: Are there any differences in thermal performance between these parts?

A: No thermal performance differences are specified in the provided parameters. Both parts operate across the same temperature range (-40°C to 125°C) and share identical quiescent current and dropout specifications.

Q: What is the moisture sensitivity level for these parts?

A: The original LP2960IMX-3.3 has MSL 3 (168 Hours). Moisture sensitivity data for the substitute part was not provided in the specification.

Q: Can these parts be used interchangeably on the same PCB?

A: Yes. Both parts use the 16-SOIC (0.154", 3.90mm Width) package with identical pin configuration and spacing. PCB layout and footprint remain unchanged.