LP2985IM5-2.7/NOPB Equivalent & Substitute Parts

Part Overview

The LP2985IM5-2.7/NOPB is a linear voltage regulator IC from Texas Instruments designed for positive fixed 2.7V output applications with 150mA current capacity in SOT-23-5 surface mount packaging. This part is classified as obsolete, making identification of equivalent and substitute components essential for ongoing design support, production continuity, and system maintenance.

Substiute Parts

LP2985IM5-2.7/NOPB

Texas InstrumentsIn Stock: 1409LP2985IM5-2.7/NOPB Datasheet

Current PartRFQ

TPS7A2401DBVR

Texas InstrumentsIn Stock: 19846TPS7A2401DBVR Datasheet

MFR RecommendedRFQ

MIC5205-2.7YM5-TR

Microchip TechnologyIn Stock: 5753MIC5205-2.7YM5-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LP2985IM5-2.7/NOPB are identified based on the following critical parameters:

Primary Substitution Criteria:

• Output voltage configuration: Fixed 2.7V output
• Output current capacity: 150mA minimum
• Input voltage rating: 16V or higher
• Package type: SOT-23-5 (SC-74A, SOT-753)
• Surface mount mounting type
• Operating temperature range: -40°C ~ 125°C
• Compliance: ROHS3, REACH Unaffected

Substitute Categories:

Category 1: Direct Fixed-Output Equivalents Parts with identical fixed 2.7V output, 150mA current rating, and matching electrical specifications. These provide pin-compatible replacement with equivalent performance characteristics.

Category 2: Enhanced Performance Alternatives Parts with adjustable output capability that can be configured to 2.7V output with higher current capacity or improved electrical characteristics. These require design consideration for output voltage setting but offer superior performance metrics.

Parameter Comparison

Engineering Selection Recommendations

MIC5205-2.7YM5-TR (Direct Equivalent)

The MIC5205-2.7YM5-TR from Microchip Technology is the primary substitute for the obsolete LP2985IM5-2.7/NOPB. This part maintains identical fixed 2.7V output voltage and 150mA current rating with matching SOT-23-5 packaging. The MIC5205-2.7YM5-TR is currently in active production status, ensuring long-term availability and supply chain continuity. Key advantages include improved dropout voltage performance (0.35V versus 0.58V) and enhanced PSRR (75dB at 100Hz versus 45dB at 1kHz). All compliance certifications align: ROHS3 Compliant, REACH Unaffected, MSL 1. This part is recommended as the primary replacement for direct substitution in existing designs.

TPS7A2401DBVR (Enhanced Alternative)

The TPS7A2401DBVR from Texas Instruments offers an alternative approach with adjustable output voltage capability (1.24V to 17.75V) and higher current capacity (200mA). This part is suitable for applications requiring design flexibility or higher output current margins. The TPS7A2401DBVR requires external resistor network configuration to set the 2.7V output voltage but delivers superior electrical performance: 0.25V dropout voltage, 4.5 µA quiescent current, and 75dB ~ 62dB PSRR across the 10Hz to 1kHz frequency range. Input voltage rating extends to 18V. This part is currently in active production status with full compliance certifications (ROHS3 Compliant, REACH Unaffected, MSL 1). Selection of this part requires design modification to accommodate the adjustable output configuration.

Frequently Asked Questions (FAQ)

Q: Can the MIC5205-2.7YM5-TR be used as a direct drop-in replacement for the LP2985IM5-2.7/NOPB?

A: Yes. The MIC5205-2.7YM5-TR provides direct pin-compatible substitution with identical fixed 2.7V output voltage, 150mA current rating, and SOT-23-5 packaging. No circuit modifications are required. The part maintains the same operating temperature range (-40°C ~ 125°C) and compliance certifications.

Q: What are the key differences between the MIC5205-2.7YM5-TR and TPS7A2401DBVR?

A: The MIC5205-2.7YM5-TR is a fixed-output device identical to the original part, while the TPS7A2401DBVR is adjustable-output requiring external resistor configuration. The TPS7A2401DBVR offers higher current capacity (200mA versus 150mA), lower dropout voltage (0.25V versus 0.35V), and significantly lower quiescent current (4.5 µA versus 150 µA). The TPS7A2401DBVR requires design modification for output voltage setting.

Q: Are all substitute parts available in the same packaging?

A: Yes. All substitute parts listed are available in SOT-23-5 packaging (SC-74A, SOT-753), matching the original LP2985IM5-2.7/NOPB package specification.

Q: What is the compliance status of the substitute parts?

A: Both substitute parts are ROHS3 Compliant, REACH Unaffected, and carry Moisture Sensitivity Level 1 (Unlimited), matching the original part's compliance profile.

Q: Why is the LP2985IM5-2.7/NOPB classified as obsolete?

A: The LP2985IM5-2.7/NOPB is no longer in active production from Texas Instruments. Substitute parts ensure design continuity and long-term supply chain reliability for applications currently using this component.

Q: Which substitute part should be selected for new designs?

A: For new designs requiring fixed 2.7V output at 150mA, the MIC5205-2.7YM5-TR is recommended. For applications benefiting from adjustable output capability or requiring higher current capacity, the TPS7A2401DBVR is suitable with appropriate design modifications.

Q: Do the substitute parts require any circuit modifications?

A: The MIC5205-2.7YM5-TR requires no modifications. The TPS7A2401DBVR requires external resistor network configuration to set the 2.7V output voltage according to the device datasheet.