LP3988IMFX-2.5/NOPB Equivalent & Substitute Parts

Part Overview

The LP3988IMFX-2.5/NOPB is a linear voltage regulator IC manufactured by Texas Instruments, designed for positive fixed output applications. This Surface Mount device delivers 150mA output current at a fixed 2.5V output voltage with a maximum dropout voltage of 0.15V at full load. The part is Active status and ROHS3 compliant, making it suitable for modern electronic applications requiring stable low-voltage power delivery in compact form factors.

Equivalent and substitute parts are identified when design requirements change, inventory constraints occur, or when alternative sourcing becomes necessary while maintaining electrical and mechanical compatibility within specified parameters.

Substiute Parts

LP3988IMFX-2.5/NOPB

Texas InstrumentsIn Stock: 1214LP3988IMFX-2.5/NOPB Datasheet

Current PartRFQ

LP3988IMF-2.5/NOPB

Texas InstrumentsIn Stock: 1319LP3988IMF-2.5/NOPB Datasheet

Parametric EquivalentRFQ

MIC5256-2.5YM5-TR

Microchip TechnologyIn Stock: 9820MIC5256-2.5YM5-TR Datasheet

MFR RecommendedRFQ

TC1186-3.3VCT713

Microchip TechnologyIn Stock: 10108TC1186-3.3VCT713 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LP3988IMFX-2.5/NOPB are identified based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

• Output voltage: 2.5V fixed output
• Output current capability: 150mA minimum
• Input voltage range: Maximum 6V or higher
• Package type: SOT-23-5 (SC-74A, SOT-753)
• Mounting type: Surface Mount
• Operating temperature range: -40°C to 125°C minimum
• Product status: Active
• Compliance: ROHS3 compliant

Parametric Equivalent Classification: Parts meeting all primary criteria with identical electrical performance characteristics are classified as parametric equivalents. The LP3988IMF-2.5/NOPB differs only in packaging format (Tape & Reel vs. Cut Tape) while maintaining identical electrical specifications.

Manufacturer Recommended Substitutes: Parts meeting primary criteria with minor variations in secondary parameters (dropout voltage, quiescent current, PSRR, or control features) are classified as manufacturer recommended substitutes. These parts provide functional compatibility with acceptable trade-offs in performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

LP3988IMF-2.5/NOPB (Parametric Equivalent) This part is a direct parametric equivalent to the LP3988IMFX-2.5/NOPB. Both parts are manufactured by Texas Instruments with identical electrical specifications. The only difference is packaging format: LP3988IMF-2.5/NOPB is supplied in Tape & Reel format while LP3988IMFX-2.5/NOPB is supplied in Cut Tape format. Both maintain Active product status and ROHS3 compliance. Selection between these two depends solely on packaging and supply chain requirements.

MIC5256-2.5YM5-TR (Manufacturer Recommended Substitute) This Microchip Technology part maintains the same 2.5V output voltage, 150mA output current, and SOT-23-5 package. The MIC5256-2.5YM5-TR exhibits a higher dropout voltage (0.25V vs. 0.15V) and slightly elevated quiescent current (150 µA vs. 120 µA). The part is Active status and ROHS3 compliant. This substitute is suitable for applications where the increased dropout voltage and quiescent current are within system design margins.

TC1186-3.3VCT713 (Manufacturer Recommended Substitute - Output Voltage Variant) This Microchip Technology part differs in output voltage specification (3.3V vs. 2.5V) and is suitable only for applications requiring 3.3V output. The TC1186-3.3VCT713 provides superior quiescent current performance (80 µA vs. 120 µA) but exhibits higher dropout voltage (0.4V vs. 0.15V). The part is Active status and ROHS3 compliant. This substitute applies only to designs where 3.3V output voltage is acceptable.

Frequently Asked Questions (FAQ)

Q: Can LP3988IMF-2.5/NOPB be used as a direct replacement for LP3988IMFX-2.5/NOPB? A: Yes. Both parts are parametric equivalents with identical electrical specifications. The difference is packaging format only: Cut Tape (CT) versus Tape & Reel (TR). Selection depends on your procurement and assembly process requirements.

Q: Is MIC5256-2.5YM5-TR a suitable substitute for the LP3988IMFX-2.5/NOPB? A: MIC5256-2.5YM5-TR is a manufacturer recommended substitute. It maintains 2.5V output and 150mA current capability in the same SOT-23-5 package. However, it has higher dropout voltage (0.25V vs. 0.15V) and quiescent current (150 µA vs. 120 µA). Verify these parameters are acceptable for your application's power budget and thermal requirements.

Q: Can TC1186-3.3VCT713 replace the LP3988IMFX-2.5/NOPB? A: TC1186-3.3VCT713 is not a direct substitute due to different output voltage (3.3V vs. 2.5V). Use this part only if your circuit design can operate at 3.3V output voltage. It is not suitable for applications requiring 2.5V output.

Q: What are the key differences between these substitute parts? A: The primary differences are output voltage (2.5V vs. 3.3V for TC1186), dropout voltage performance (0.15V, 0.25V, or 0.4V), and quiescent current consumption (80 µA to 150 µA). All parts share the same SOT-23-5 package, 150mA output current, and -40°C to 125°C operating temperature range.

Q: Are all listed parts ROHS3 compliant? A: Yes. All parts listed—LP3988IMFX-2.5/NOPB, LP3988IMF-2.5/NOPB, MIC5256-2.5YM5-TR, and TC1186-3.3VCT713—are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited).

Q: Do all substitute parts use the same SOT-23-5 package? A: Yes. All listed parts use the SOT-23-5 package (SC-74A, SOT-753 case designation), ensuring mechanical and pin compatibility for PCB layout and assembly.