LP2985IM5-3.2 Equivalent & Substitute Parts

Part Overview

The LP2985IM5-3.2 is a linear voltage regulator IC from Texas Instruments designed for positive fixed output applications. This device delivers 150mA output current with a fixed 3.2V output and is housed in a SOT-23-5 surface mount package. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

LP2985IM5-3.2

Texas InstrumentsIn Stock: 4960LP2985IM5-3.2 Datasheet

Current PartRFQ

LP2985IM5-3.2/NOPB

Texas InstrumentsIn Stock: 4303LP2985IM5-3.2/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LP2985IM5-3.2 is determined by strict alignment of the following electrical and mechanical parameters:

• Fixed output voltage of 3.2V
• Minimum output current capability of 150mA
• Maximum input voltage rating of 16V or higher
• SOT-23-5 package compatibility
• Operating temperature range of -40°C to 125°C or wider
• Presence of enable control feature
• Integrated protection against overcurrent, overtemperature, and short circuit conditions

The identified substitute LP2985IM5-3.2/NOPB is a direct equivalent from the same manufacturer with identical electrical specifications and package configuration. Additional cross-reference alternatives (MIC5205-3.2YM5-TR, MIC5207-3.2YM5-TR, TPS7A2401DBVR) are listed in the original documentation but require independent verification against the above parameters for your specific application.

Parameter Comparison

Engineering Selection Recommendations

The LP2985IM5-3.2/NOPB is the direct functional equivalent of the LP2985IM5-3.2. Both parts are classified as obsolete and share identical electrical and mechanical specifications. The primary distinction is RoHS compliance status: the /NOPB variant meets ROHS3 requirements, while the original part does not.

For new designs or production requiring RoHS compliance, the LP2985IM5-3.2/NOPB is the appropriate selection. For legacy systems where RoHS compliance is not a requirement, either part meets the electrical specifications. Both parts maintain identical package configuration, thermal performance, and protection characteristics.

Frequently Asked Questions (FAQ)

Q: Can LP2985IM5-3.2/NOPB be used as a direct replacement for LP2985IM5-3.2?

A: Yes. Both parts are electrically and mechanically identical. The /NOPB designation indicates RoHS3 compliance in the substitute part. Pin configuration, output voltage, current rating, and package dimensions are identical.

Q: What does the SOT-23-5 package specification mean?

A: SOT-23-5 is a surface mount package with five leads. The SC-74A and SOT-753 designations refer to the same physical package. This package is standard for small signal linear regulators and is compatible with automated assembly equipment.

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

A: No. Both parts share identical thermal characteristics, dropout voltage, quiescent current, and PSRR specifications. Thermal performance in your application will be equivalent.

Q: Why is RoHS compliance different between the two parts?

A: The /NOPB variant was manufactured to meet ROHS3 standards, while the original LP2985IM5-3.2 predates or does not meet these requirements. If your application or supply chain requires RoHS compliance, the /NOPB version is necessary.

Q: Can this regulator handle the full 16V input specification continuously?

A: The part is rated for a maximum input voltage of 16V. Continuous operation at maximum input voltage with maximum output current (150mA) will generate heat. Verify that your PCB thermal design and operating environment support the resulting power dissipation.

Q: What is the enable control feature used for?

A: The enable pin allows software or hardware control to turn the regulator output on or off. This feature is useful for power management and reducing quiescent current when the regulated output is not needed.