LP3982IMM-3.3 Equivalent & Substitute Parts

Part Overview

The LP3982IMM-3.3 is a linear voltage regulator IC from Texas Instruments, delivering a fixed 3.3V output at 300mA with an 8-VSSOP surface mount package. This device is classified as Last Time Buy, indicating discontinued production. The part provides positive fixed output configuration with integrated protection features including over-current, over-temperature, and reverse polarity protection, operating across the industrial temperature range of -40°C to 85°C.

Identification of equivalent and substitute parts is necessary due to the Last Time Buy status of the LP3982IMM-3.3. Alternative components with compatible electrical and mechanical specifications ensure design continuity and supply chain flexibility.

Substiute Parts

LP3982IMM-3.3

Texas InstrumentsIn Stock: 9094LP3982IMM-3.3 Datasheet

Current PartRFQ

LP3982IMM-3.3/NOPB

Texas InstrumentsIn Stock: 40897LP3982IMM-3.3/NOPB Datasheet

DirectRFQ

MAX8860EUA18+T

Analog Devices Inc./Maxim IntegratedIn Stock: 2059MAX8860EUA18+T Datasheet

MFR RecommendedRFQ

MAX8860EUA27+T

Analog Devices Inc./Maxim IntegratedIn Stock: 1162MAX8860EUA27+T Datasheet

MFR RecommendedRFQ

MAX8860EUA30+T

Analog Devices Inc./Maxim IntegratedIn Stock: 2829MAX8860EUA30+T Datasheet

MFR RecommendedRFQ

MAX8860EUA33+

Analog Devices Inc./Maxim IntegratedIn Stock: 2601MAX8860EUA33+ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LP3982IMM-3.3 is determined by the following critical parameters:

Electrical Compatibility Criteria:

• Output voltage: 3.3V fixed output
• Output current capability: 300mA minimum
• Input voltage range: Maximum 6V or higher
• Dropout voltage: Acceptable performance at specified current levels
• Quiescent current: 270 µA baseline
• Operating temperature range: -40°C to 85°C minimum

Mechanical Compatibility Criteria:

• Package type: 8-TSSOP, 8-MSOP surface mount
• Pin configuration: Compatible pinout for direct replacement
• Mounting footprint: 0.118" width, 3.00mm standard

Regulatory Compliance:

• RoHS3 compliance required
• MSL rating: 1 (Unlimited) or equivalent
• REACH unaffected status

The LP3982IMM-3.3/NOPB from Texas Instruments is a direct equivalent with identical electrical and mechanical specifications. The MAX8860 series from Analog Devices Inc./Maxim Integrated provides functional substitution with adjustable (fixed) output configuration, allowing 3.3V operation through internal resistor networks while maintaining 300mA output current and compatible packaging.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Preferred): The LP3982IMM-3.3/NOPB is the recommended direct substitute. This part maintains identical electrical specifications, package configuration, and protection features while offering Active product status. Both parts are ROHS3 compliant with MSL 1 rating, ensuring compatibility with existing PCB designs and manufacturing processes without design modification.

Functional Substitutes (Requires Design Verification): The MAX8860 series (MAX8860EUA33+, MAX8860EUA30+T, MAX8860EUA27+T, MAX8860EUA18+T) provides functional substitution with the following considerations:

• All MAX8860 variants maintain 300mA output current and compatible 8-TSSOP/8-MSOP packaging
• MAX8860EUA33+ delivers 3.3V fixed output, matching the LP3982IMM-3.3 voltage specification
• MAX8860 devices feature improved dropout voltage (0.155V typical @ 300mA versus 0.22V @ 200mA), providing enhanced performance margin
• MAX8860 series includes Fault Output control feature and Short Circuit protection, expanding functional capability
• Input voltage range extends to 6.5V, providing additional design flexibility
• All MAX8860 variants maintain ROHS3 compliance and MSL 1 rating
• Product status is Active for all MAX8860 options, ensuring long-term availability

Selection of MAX8860EUA33+ is appropriate when design requirements permit adjustable output configuration utilization or when enhanced protection features are beneficial. Alternative MAX8860 variants (EUA30+T, EUA27+T, EUA18+T) are suitable only if application requirements allow operation at reduced output voltages (3V, 2.77V, 1.8V respectively).

Frequently Asked Questions (FAQ)

Q: Can LP3982IMM-3.3/NOPB be used as a direct replacement for LP3982IMM-3.3?

A: Yes. The LP3982IMM-3.3/NOPB is a direct equivalent with identical electrical specifications, package configuration, and protection features. The primary difference is product status: LP3982IMM-3.3/NOPB is Active while the original is Last Time Buy. No design changes are required.

Q: What is the difference between LP3982IMM-3.3 and MAX8860EUA33+?

A: Both deliver 3.3V fixed output at 300mA in compatible 8-TSSOP/8-MSOP packages. Key differences include: MAX8860EUA33+ features adjustable (fixed) output configuration, improved dropout voltage (0.155V typical versus 0.22V), additional Fault Output control, and Short Circuit protection. Input voltage range extends to 6.5V on the MAX8860. Both are ROHS3 compliant with MSL 1 rating.

Q: Can MAX8860EUA30+T replace LP3982IMM-3.3?

A: MAX8860EUA30+T is not recommended as a direct replacement. While it maintains 300mA output current and compatible packaging, the fixed output voltage is 3V, not 3.3V. This part is suitable only for applications where 3V operation is acceptable.

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

A: All listed substitutes use 8-TSSOP or 8-MSOP surface mount packages with 0.118" width and 3.00mm standard dimensions. Packaging format differs: LP3982IMM-3.3 is supplied in Cut Tape (CT) & Digi-Reel, LP3982IMM-3.3/NOPB in Cut Tape (CT) & Digi-Reel, MAX8860EUA33+ in Tube, and MAX8860EUA variants in Tape & Reel (TR). PCB footprint compatibility is maintained across all options.

Q: Do all substitute parts meet RoHS and MSL requirements?

A: Yes. All listed parts are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). REACH status is unaffected for all options. These certifications ensure compatibility with standard manufacturing processes and storage requirements.

Q: What is the advantage of MAX8860 series over LP3982?

A: MAX8860 devices provide lower dropout voltage (0.155V typical @ 300mA), additional Fault Output functionality, and Short Circuit protection. Input voltage range extends to 6.5V. These features enhance performance margin and system reliability, though the LP3982IMM-3.3/NOPB remains the preferred direct replacement for existing designs.