LM4838MTE/NOPB Equivalent & Substitute Parts

Part Overview

The LM4838MTE/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 and operates across a 2.7V to 5.5V supply voltage range. The part is classified as Obsolete in product status, making identification of functionally equivalent alternatives essential for ongoing design support, production continuity, and component procurement planning.

Substiute Parts

LM4838MTE/NOPB

Texas InstrumentsIn Stock: 1055LM4838MTE/NOPB Datasheet

Current PartRFQ

LM4936MH/NOPB

Texas InstrumentsIn Stock: 829LM4936MH/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM4838MTE/NOPB is determined by strict alignment across the following critical parameters:

Mandatory Matching Criteria:

• Amplifier topology: Class AB stereo configuration
• Output channels: 2-Channel (Stereo) with stereo headphone capability
• Output power specification: Minimum 2.2W per channel at 3Ohm load
• Supply voltage range: 2.7V ~ 5.5V compatibility
• Package form factor: 28-PowerTSSOP mechanical and electrical compatibility
• Mounting technology: Surface Mount
• Operating temperature range: -40°C ~ 85°C minimum

The LM4936MH/NOPB qualifies as a direct substitute based on identical alignment across all mandatory parameters. Both devices share the same package footprint, supply voltage specifications, output power ratings at 3Ohm load, and thermal operating range. The LM4936MH/NOPB maintains full electrical and mechanical compatibility while offering enhanced feature integration and Active product status.

Parameter Comparison

Engineering Selection Recommendations

The LM4838MTE/NOPB is classified as Obsolete, indicating discontinued manufacturing and limited long-term availability. The LM4936MH/NOPB is the manufacturer-recommended substitute and maintains Active product status with confirmed inventory availability.

Selection Basis:

The LM4936MH/NOPB provides direct functional equivalence with identical electrical specifications for the critical parameters governing stereo headphone amplifier performance: Class AB topology, 2-channel stereo output, 2.2W per channel at 3Ohm load, and 2.7V to 5.5V supply voltage operation. Both devices share identical package geometry (28-PowerTSSOP), mounting technology (Surface Mount), and thermal operating range (-40°C to 85°C).

Both parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with standard manufacturing and storage protocols. The LM4936MH/NOPB demonstrates enhanced feature integration including Bass Boost, I2C, and SPI control interfaces, while maintaining backward compatibility with the core amplifier functionality of the obsolete LM4838MTE/NOPB.

Frequently Asked Questions (FAQ)

Q: Can the LM4936MH/NOPB be used as a direct replacement for the LM4838MTE/NOPB in existing designs?

A: Yes. Both devices share identical Class AB stereo amplifier topology, 2-channel output configuration, 2.2W per channel output power at 3Ohm load, 2.7V to 5.5V supply voltage range, 28-PowerTSSOP package footprint, and -40°C to 85°C operating temperature specification. Pin-for-pin and functional compatibility is confirmed across all critical electrical and mechanical parameters.

Q: What is the difference in output power at 32Ohm load between these parts?

A: The LM4838MTE/NOPB delivers 95mW per channel at 32Ohm load, while the LM4936MH/NOPB delivers 110mW per channel at the same load. This represents enhanced performance in the substitute part and does not create compatibility issues in applications designed for the original specification.

Q: Are there packaging differences between LM4838MTE/NOPB and LM4936MH/NOPB?

A: Both parts use the 28-PowerTSSOP package with identical mechanical dimensions (0.173" width, 4.40mm). The LM4838MTE/NOPB is supplied in standard packaging, while the LM4936MH/NOPB is supplied in Tube packaging. PCB footprint and reflow soldering requirements are identical.

Q: What additional features does the LM4936MH/NOPB provide?

A: The LM4936MH/NOPB includes Bass Boost, I2C, and SPI control interfaces in addition to the core Depop, Mute, Shutdown, Thermal Protection, and Volume Control features present in the LM4838MTE/NOPB. These additional features do not affect basic amplifier operation and are optional in application implementation.

Q: Why is the LM4838MTE/NOPB classified as Obsolete?

A: Obsolete classification indicates that Texas Instruments has discontinued manufacturing of this part number. The LM4936MH/NOPB represents the active product line continuation with equivalent core functionality and enhanced feature integration.

Q: Are both parts RoHS compliant?

A: Yes. Both the LM4838MTE/NOPB and LM4936MH/NOPB are ROHS3 compliant and carry MSL Level 1 (Unlimited) moisture sensitivity rating, meeting standard environmental and manufacturing requirements.