LM4911MM Equivalent & Substitute Parts Reference

Part Overview

The LM4911MM, manufactured by Texas Instruments, is a stereo headphone amplifier IC operating in Class AB mode, supplied in a 10-VSSOP surface-mount package. It delivers 145mW per channel into a 16 Ohm load and includes features such as mute, shutdown, and thermal protection. The device operates over a 2V to 5.5V supply range and is rated for use across a -40°C to 85°C temperature range.

This part has an obsolete status, making it essential to identify compatible alternative models to ensure continued support for existing designs or for maintenance and repair applications. Equivalent and substitute parts are selected strictly within the constraints of provided product parameters and compliance.

Substiute Parts

LM4911MM

Texas InstrumentsIn Stock: 16015LM4911MM Datasheet

Current PartRFQ

LM4911MM/NOPB

National SemiconductorIn Stock: 3195LM4911MM/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LM4911MM are grouped by strict equivalence across all provided electrical and mechanical parameters. Substitution is permitted only for parts that match the following criteria:

• Series
• Class type (Class AB)
• Output type (Headphones, 2-Channel Stereo)
• Maximum output power and channel configuration (145mW x 2 @ 16Ohm)
• Voltage supply range (2V ~ 5.5V)
• Features (Mute, Shutdown, Thermal Protection)
• Mounting type (Surface Mount)
• Operating temperature range (-40°C ~ 85°C)
• Package type and pinout (10-VSSOP, 10-TFSOP, 10-MSOP)
• ECCN and HTSUS
• MSL and RoHS status

These criteria ensure function-level, mechanical, and regulatory interchangeability.

Parameter Comparison

Engineering Selection Recommendations

LM4911MM is classified as obsolete, which restricts new design use and long-term procurement. LM4911MM/NOPB shares all key electrical, thermomechanical, and regulatory features with LM4911MM and is processed as an active product. The substitute, LM4911MM/NOPB, meets all criteria for direct interchange, with matching features and performance, ensuring compatibility within the defined compliance and regulatory parameters. Selection should consider the RoHS status: LM4911MM is RoHS non-compliant, whereas the RoHS status for LM4911MM/NOPB is not detailed in the provided dataset.

Frequently Asked Questions (FAQ)

Q1: What criteria define substitution for LM4911MM?
A1: Substitute parts must match series, electrical performance (Class AB, stereo headphone output, 145mW x 2 @ 16Ohm, 2V–5.5V supply), feature set (mute, shutdown, thermal protection), package type (10-VSSOP), and regulatory attributes.

Q2: Is LM4911MM/NOPB functionally equivalent to LM4911MM?
A2: LM4911MM/NOPB matches all provided parameters, including series, output power, voltage range, package, and feature set, and is functionally equivalent for substitution.

Q3: Are package types and pinout compatible for direct replacement?
A3: Both parts utilize 10-VSSOP and share package dimensions (10-TFSOP, 10-MSOP, 0.118", 3.00mm width), ensuring compatibility in PCB designs.

Q4: What is the primary difference in compliance or status seen here?
A4: The main product, LM4911MM, is obsolete and RoHS non-compliant, while the substitute, LM4911MM/NOPB, is listed as active; its RoHS compliance status is not specified in the provided parameters.

Q5: Does changing from LM4911MM to LM4911MM/NOPB require PCB changes?
A5: No PCB changes are required due to matching package and pinout information based on provided parameters.