LM4808MM/NOPB Equivalent & Substitute Parts

Part Overview

The LM4808MM/NOPB is a Class AB stereo headphone amplifier IC manufactured by Texas Instruments, designed for low-voltage audio applications. This device delivers 150mW per channel at 16Ω load and operates across a 2V to 5.5V supply voltage range. The part is currently in active production status with depop functionality for click-free operation.

Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and regulatory compliance can be maintained across different manufacturer offerings. The LM4808MM/NOPB has one qualified substitute in the STMicroelectronics product line.

Substiute Parts

LM4808MM/NOPB

Texas InstrumentsIn Stock: 32422LM4808MM/NOPB Datasheet

Current PartRFQ

TS482IST

STMicroelectronicsIn Stock: 80992TS482IST Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM4808MM/NOPB is determined by strict alignment across the following critical parameters:

Electrical Compatibility Requirements:

• Amplifier topology must be Class AB
• Output configuration must support 2-channel stereo headphone operation
• Supply voltage range must encompass 2V to 5.5V
• Operating temperature range must cover -40°C to 85°C minimum
• Depop feature must be present

Mechanical Compatibility Requirements:

• Mounting type must be Surface Mount
• Package must be compatible with 8-pin configurations (8-VSSOP, 8-TSSOP, 8-MSOP, or 8-MiniSO)

Regulatory Compliance Requirements:

• RoHS3 compliance mandatory
• MSL rating of 1 or equivalent
• REACH unaffected status

Performance Consideration:

• Maximum output power at 16Ω load may vary within the substitute group, provided the part remains suitable for the intended headphone amplification application

The TS482IST from STMicroelectronics meets all mandatory electrical, mechanical, and regulatory criteria for substitution, with the exception of reduced maximum output power (107mW vs. 150mW per channel).

Parameter Comparison

Engineering Selection Recommendations

Primary Part: LM4808MM/NOPB

The LM4808MM/NOPB remains the primary selection for applications requiring maximum output power of 150mW per channel at 16Ω load. This part is in active production with full RoHS3 compliance and unlimited moisture sensitivity rating, suitable for standard manufacturing and storage conditions.

Substitute Part: TS482IST

The TS482IST qualifies as an equivalent substitute when output power requirements can be met with 107mW per channel at 16Ω load. This part maintains identical supply voltage range, operating temperature envelope, and regulatory compliance status. The 8-MiniSO package is mechanically compatible with standard 8-pin surface mount assembly processes.

Selection Criteria:

• Use LM4808MM/NOPB when maximum output power of 150mW per channel is required
• Use TS482IST when output power of 107mW per channel is sufficient and STMicroelectronics supply chain or inventory availability is preferred
• Both parts support identical supply voltage (2V to 5.5V) and operating temperature (-40°C to 85°C) ranges
• Both parts include depop functionality for click-free audio operation
• Both parts meet ROHS3 compliance and carry MSL rating of 1

Frequently Asked Questions (FAQ)

Q: Can TS482IST be used as a direct replacement for LM4808MM/NOPB?

A: The TS482IST is electrically and mechanically compatible with the LM4808MM/NOPB for stereo headphone amplification applications. The primary difference is reduced maximum output power (107mW vs. 150mW per channel at 16Ω). Substitution is valid when the lower output power specification meets application requirements.

Q: What is the difference in package types between these parts?

A: The LM4808MM/NOPB uses 8-VSSOP packaging, while the TS482IST uses 8-MiniSO packaging. Both are 8-pin surface mount packages with compatible pin configurations for this amplifier class. PCB layout modifications may be required due to different physical footprints.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the LM4808MM/NOPB and TS482IST are ROHS3 compliant with MSL rating of 1 (unlimited moisture sensitivity). Both parts are REACH unaffected.

Q: What is the significance of the depop feature?

A: Depop is a functional feature that eliminates audible clicks or pops during power-on and power-off transitions. Both the LM4808MM/NOPB and TS482IST include this feature, ensuring consistent audio performance across the substitute group.

Q: Can these parts operate from the same power supply?

A: Yes. Both parts operate across the identical supply voltage range of 2V to 5.5V and the identical operating temperature range of -40°C to 85°C. Power supply design and thermal management requirements are equivalent.

Q: What inventory considerations apply to these parts?

A: The LM4808MM/NOPB has 32,400 pieces in stock (Tape & Reel packaging). The TS482IST has 80,903 pieces in stock (Cut Tape & Digi-Reel packaging). Packaging format may affect procurement lead times and minimum order quantities.