LM4880N Equivalent & Substitute Parts

Part Overview

The LM4880N is a stereo Class AB audio amplifier IC manufactured by Texas Instruments, designed for 2-channel audio applications with 325mW output power per channel at 8Ω load impedance. The device operates from a 2.7V to 5.5V supply and integrates shutdown and thermal protection features in an 8-PDIP through-hole package.

The LM4880N carries an Obsolete product status. Identifying equivalent and substitute components is necessary to maintain design continuity, ensure supply chain reliability, and support long-term product availability for applications currently utilizing this amplifier IC.

Substiute Parts

LM4880N

Texas InstrumentsIn Stock: 891LM4880N Datasheet

Current PartRFQ

TLC1078CP

Texas InstrumentsIn Stock: 1024TLC1078CP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM4880N is determined by the following critical parameters:

Package Compatibility: Both the main part and substitute must use the 8-DIP (0.300", 7.62mm) through-hole package to ensure direct PCB footprint compatibility without layout modifications.

Mounting Type: Through-hole mounting is required to match the original design.

Pin Count and Configuration: The 8-pin DIP package constrains the functional scope of potential substitutes.

Supply Voltage Compatibility: The substitute must operate within or encompass the 2.7V to 5.5V supply range of the LM4880N to function in existing power supply designs.

Operating Temperature Range: The substitute must support the -40°C to 85°C operating window or a compatible subset thereof.

The TLC1078CP meets these substitution criteria through matching package geometry, pin count, through-hole mounting, overlapping supply voltage range (1.4V to 16V encompasses the LM4880N range), and compatible operating temperature specifications for industrial applications.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The LM4880N is classified as Obsolete, whereas the TLC1078CP maintains Active product status. Active status ensures continued manufacturer support, availability through authorized distribution channels, and compliance with current regulatory standards.

Regulatory Compliance: The TLC1078CP is ROHS3 compliant, meeting current European Union Restriction of Hazardous Substances directives. The LM4880N is RoHS non-compliant, which may present procurement and environmental compliance challenges in regulated markets.

Supply Chain Reliability: Active product status for the TLC1078CP provides superior long-term availability and supply chain stability compared to the obsolete LM4880N.

Operating Temperature Derating: Applications requiring the full -40°C to 85°C temperature range of the LM4880N cannot use the TLC1078CP without thermal derating, as the substitute operates only from 0°C to 70°C. Verify application temperature requirements before substitution.

Supply Voltage Envelope: The TLC1078CP supply voltage range (1.4V to 16V) fully encompasses the LM4880N operating range (2.7V to 5.5V), ensuring compatibility with existing power supply designs.

Frequently Asked Questions (FAQ)

Q: Can the TLC1078CP be used as a direct replacement for the LM4880N without PCB modifications?

A: Yes, the TLC1078CP uses the identical 8-DIP (0.300", 7.62mm) through-hole package and pin count, enabling direct PCB footprint compatibility without layout changes.

Q: What are the key functional differences between these parts?

A: The LM4880N is a Class AB stereo power amplifier with 325mW per channel output capability. The TLC1078CP is a CMOS general-purpose operational amplifier with 2 circuits. These are functionally distinct device types. Substitution is valid only when the application requirements align with CMOS op-amp characteristics rather than dedicated power amplifier specifications.

Q: Does the TLC1078CP support the full operating temperature range of the LM4880N?

A: No. The TLC1078CP operates from 0°C to 70°C, whereas the LM4880N operates from -40°C to 85°C. Applications requiring operation below 0°C or above 70°C cannot use the TLC1078CP without thermal derating or design modification.

Q: Are there RoHS compliance implications when substituting the TLC1078CP for the LM4880N?

A: Yes. The TLC1078CP is ROHS3 compliant, meeting current hazardous substance restrictions. The LM4880N is RoHS non-compliant. Substitution with the TLC1078CP improves regulatory compliance for new designs and procurement in regulated markets.

Q: What supply voltage range should be used with the TLC1078CP in an LM4880N application?

A: The TLC1078CP operates from 1.4V to 16V. For compatibility with existing LM4880N designs, maintain the original 2.7V to 5.5V supply voltage range. The wider TLC1078CP range provides design flexibility but does not require supply voltage modification.

Q: Is the TLC1078CP available in the same packaging options as the LM4880N?

A: Both devices are available in 8-PDIP through-hole packaging. The TLC1078CP is supplied in Tube packaging format. Verify packaging format requirements for your procurement and assembly processes.