LP2985IBP-5.0/NOPB Equivalent & Substitute Parts

Part Overview

The LP2985IBP-5.0/NOPB is a linear voltage regulator IC manufactured by Texas Instruments, designed to deliver a fixed 5V output at 150mA. This device is classified as a Power Management (PMIC) component and features integrated protection against overcurrent, overtemperature, and short circuit conditions. The part is currently listed as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

LP2985IBP-5.0/NOPB

Texas InstrumentsIn Stock: 1149LP2985IBP-5.0/NOPB Datasheet

Current PartRFQ

LP2992AIM5-5.0/NOPB

Texas InstrumentsIn Stock: 17360LP2992AIM5-5.0/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LP2985IBP-5.0/NOPB is determined by the following critical parameters:

• Fixed output voltage of 5V
• Output current capability (minimum 150mA required for direct replacement)
• Maximum input voltage rating of 16V or greater
• Positive output configuration
• Single regulator output
• Integrated protection features (overcurrent, overtemperature, short circuit)
• Operating temperature range of -40°C to 125°C
• Surface mount technology
• RoHS3 compliance

The LP2992AIM5-5.0/NOPB meets these substitution criteria with enhanced specifications in output current capacity (250mA versus 150mA) and maintains electrical and environmental compatibility.

Parameter Comparison

Engineering Selection Recommendations

The LP2992AIM5-5.0/NOPB is a direct functional substitute for the obsolete LP2985IBP-5.0/NOPB. Both devices are manufactured by Texas Instruments and maintain identical electrical specifications for output voltage, quiescent current, PSRR, and protection features. The substitute part offers increased output current capacity (250mA versus 150mA), providing design margin for applications originally specified at 150mA.

The primary design consideration is package compatibility. The LP2985IBP-5.0/NOPB uses a 5-µSMD (0.93x1.11) package, while the LP2992AIM5-5.0/NOPB uses SOT-23-5 (SC-74A) packaging. PCB layout modifications are required to accommodate the different package footprint.

Both parts maintain ROHS3 compliance and unlimited moisture sensitivity level (MSL 1), ensuring compatibility with standard manufacturing and storage practices. The substitute part is currently in active production with substantial inventory availability.

Frequently Asked Questions (FAQ)

Q: Can the LP2992AIM5-5.0/NOPB directly replace the LP2985IBP-5.0/NOPB without circuit modifications?

A: Electrical substitution is direct. The output voltage, quiescent current, protection features, and operating temperature range are identical. However, the package footprint differs (5-µSMD versus SOT-23-5), requiring PCB layout redesign.

Q: What is the impact of the higher dropout voltage in the LP2992AIM5-5.0/NOPB?

A: The LP2992AIM5-5.0/NOPB has a maximum dropout voltage of 0.85V at 250mA, compared to 0.58V at 150mA for the LP2985IBP-5.0/NOPB. For applications operating at or below 150mA, this difference has minimal impact on regulator performance. Applications requiring operation at higher currents should verify that the input voltage margin remains adequate.

Q: Are there any compliance or certification differences between these parts?

A: Both parts are ROHS3 compliant and REACH unaffected. Moisture sensitivity level is identical (MSL 1, unlimited). No compliance barriers exist for substitution.

Q: Why is the LP2985IBP-5.0/NOPB listed as obsolete?

A: The LP2985 series has been superseded by the LP2992 series, which offers improved performance characteristics and broader availability. Texas Instruments continues to support the LP2992 family in active production.

Q: What is the difference between the 5-µSMD and SOT-23-5 packages?

A: The 5-µSMD (0.93x1.11mm) is a smaller micro-scale package, while SOT-23-5 is a standard small-outline package. The SOT-23-5 is more commonly used in modern designs and offers easier handling during assembly. Package selection depends on PCB space constraints and manufacturing capabilities.