LM4835MTE/NOPB Equivalent & Substitute Parts

Part Overview

The LM4835MTE/NOPB is a Class AB stereo amplifier IC manufactured by Texas Instruments, designed for 2-channel stereo headphone applications. This device delivers 2.2W per channel at 3Ohm load impedance and operates across a 2.7V to 5.5V supply voltage range. The part is classified as Obsolete in product status, making identification of active equivalent alternatives essential for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility across output power specifications, supply voltage range, and thermal operating conditions while accommodating modern packaging and feature requirements.

Substiute Parts

LM4835MTE/NOPB

Texas InstrumentsIn Stock: 1451LM4835MTE/NOPB Datasheet

Current PartRFQ

LM4936MH/NOPB

Texas InstrumentsIn Stock: 829LM4936MH/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM4835MTE/NOPB is determined by strict alignment of the following electrical and mechanical parameters:

Critical Substitution Criteria:

• Class AB amplifier topology
• 2-Channel stereo headphone output configuration
• Minimum 2.2W output power per channel at 3Ohm load
• Supply voltage range: 2.7V ~ 5.5V
• Operating temperature range: -40°C ~ 85°C
• Package: 28-PowerTSSOP form factor
• Surface mount technology
• ROHS3 compliance and MSL 1 rating

The LM4936MH/NOPB qualifies as a direct substitute based on identical electrical specifications for the primary load condition (2.2W @ 3Ohm), matching supply voltage range, thermal operating window, and package footprint. The substitute maintains full compatibility with existing PCB layouts and thermal management designs. Enhanced feature set (Bass Boost, I2C, SPI) in the substitute does not disqualify it from substitution; these features remain optional in application implementation.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: LM4936MH/NOPB

The LM4936MH/NOPB is the qualified substitute for the obsolete LM4835MTE/NOPB. Selection rationale is based on the following engineering factors:

Product Status Alignment: The LM4936MH/NOPB maintains Active product status with Texas Instruments, ensuring long-term availability, manufacturing continuity, and technical support. The LM4835MTE/NOPB is classified as Obsolete, creating supply chain risk and limiting access to future inventory.

Electrical Compatibility: Both devices operate identically across the critical 3Ohm load condition (2.2W per channel), which represents the primary application specification for stereo headphone amplification. The substitute delivers marginally higher output at 32Ohm load (110mW vs. 95mW), which does not introduce incompatibility and provides additional performance margin.

Compliance & Certification: Both parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with modern manufacturing processes and storage requirements. REACH and ECCN classifications are identical.

Packaging & Thermal: Identical 28-PowerTSSOP package footprint and thermal operating range (-40°C to 85°C) ensure direct PCB layout compatibility without redesign requirements.

Feature Enhancement: The LM4936MH/NOPB includes Bass Boost, I2C, and SPI control interfaces not present in the main part. These features are application-optional and do not mandate their use in designs requiring basic stereo amplification functionality.

Frequently Asked Questions (FAQ)

Q: Can the LM4936MH/NOPB be used as a direct drop-in replacement for the LM4835MTE/NOPB?

A: Yes. Both devices share identical package footprint (28-PowerTSSOP), pin configuration, and electrical specifications at the primary 3Ohm load condition. PCB layout modifications are not required. Pin-level compatibility must be verified against application schematics to confirm signal routing alignment.

Q: What is the difference in output power between these two parts?

A: At 3Ohm load (primary headphone impedance), both deliver 2.2W per channel identically. At 32Ohm load, the LM4936MH/NOPB delivers 110mW per channel compared to 95mW in the LM4835MTE/NOPB. This 15mW difference does not affect substitution eligibility and represents improved performance margin.

Q: Why is the LM4835MTE/NOPB classified as Obsolete?

A: Obsolete status indicates Texas Instruments has discontinued active manufacturing and support for this part number. The LM4936MH/NOPB represents the active successor within the Boomer® amplifier series, offering equivalent core functionality with enhanced feature integration.

Q: Are there any supply voltage or thermal operating differences?

A: No. Both parts operate across identical supply voltage range (2.7V to 5.5V) and thermal range (-40°C to 85°C). Designs using the LM4835MTE/NOPB require no power supply or thermal management modifications when transitioning to the LM4936MH/NOPB.

Q: What packaging options are available for the LM4936MH/NOPB?

A: The LM4936MH/NOPB is supplied in Tube packaging. The main part LM4835MTE/NOPB packaging format is not specified in available data. Confirm packaging requirements with procurement specifications before ordering.

Q: Do the additional features (Bass Boost, I2C, SPI) in the LM4936MH/NOPB require implementation in my design?

A: No. Enhanced features in the substitute are optional. Designs requiring basic stereo amplification without advanced control interfaces can implement the LM4936MH/NOPB with these features disabled or unused. Consult the device datasheet for feature disable procedures.

Q: Are both parts RoHS compliant?

A: Yes. Both the LM4835MTE/NOPB and LM4936MH/NOPB maintain ROHS3 compliance and are suitable for applications requiring lead-free manufacturing processes.