TPA0252PWPR Equivalent & Substitute Parts

Part Overview

The TPA0252PWPR is a stereo Class AB audio amplifier IC manufactured by Texas Instruments, designed for 2-channel headphone applications. This device delivers 2.8W per channel at 3Ohm load impedance and operates across a 4.5V to 5.5V supply voltage range. The part is classified as Obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and production continuity. Substitute parts must maintain compatibility with the core amplification topology, output configuration, and electrical operating parameters.

Substiute Parts

TPA0252PWPR

Texas InstrumentsIn Stock: 2114TPA0252PWPR Datasheet

Current PartRFQ

TPA6021A4N

Texas InstrumentsIn Stock: 4173TPA6021A4N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TPA0252PWPR is determined by the following criteria:

Primary Compatibility Parameters:

• Amplifier topology: Class AB configuration
• Output stage: 2-Channel stereo headphone amplifier
• Supply voltage compatibility: Overlap within 4.5V to 5.5V range
• Operating temperature range: -40°C to 85°C minimum
• Regulatory compliance: ROHS3 and REACH status alignment

Secondary Considerations:

• Output power delivery at specified load impedances
• Integrated feature set (mute, shutdown, thermal protection, volume control)
• Mounting technology (surface mount vs. through-hole)
• Package form factor and pin count

The TPA6021A4N qualifies as a substitute based on matching Class AB topology, stereo output configuration, overlapping supply voltage range (4V ~ 5.5V), identical operating temperature range, and equivalent feature integration. Differences in output power rating (2W @ 4Ohm vs. 2.8W @ 3Ohm) and package type (20-PDIP through-hole vs. 24-PowerTSSOP surface mount) represent design trade-offs requiring circuit-level evaluation.

Parameter Comparison

Engineering Selection Recommendations

TPA6021A4N Substitution Basis:

The TPA6021A4N is classified as a Last Time Buy component, providing extended availability compared to the Obsolete TPA0252PWPR. Both devices maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for new designs and legacy support applications.

Design Considerations:

The TPA6021A4N operates within a lower minimum supply voltage (4V vs. 4.5V), expanding compatibility with battery-powered and low-voltage applications. However, the output power specification differs: TPA6021A4N delivers 2W per channel at 4Ohm load versus TPA0252PWPR's 2.8W at 3Ohm. Load impedance and power delivery requirements must be evaluated against target headphone specifications.

Package Migration Impact:

Substitution requires PCB redesign due to package transition from 24-PowerTSSOP (surface mount) to 20-DIP (through-hole). This change affects board layout, assembly process, and form factor constraints. Pin configuration and functional mapping must be verified against application schematics.

Frequently Asked Questions (FAQ)

Q: Can TPA6021A4N directly replace TPA0252PWPR without circuit modification?

A: Direct pin-for-pin replacement is not possible due to different package types (24-PowerTSSOP vs. 20-DIP) and pin counts. PCB redesign and schematic verification are required. Functional compatibility exists for stereo headphone amplification, but load impedance and power delivery specifications differ.

Q: What is the impact of the lower minimum supply voltage (4V) in TPA6021A4N?

A: The TPA6021A4N minimum supply voltage of 4V extends operational range below the TPA0252PWPR threshold of 4.5V. This enables compatibility with lower-voltage power sources. Maximum supply voltage remains 5.5V for both devices, maintaining upper-range alignment.

Q: How do output power ratings affect substitution suitability?

A: TPA0252PWPR delivers 2.8W per channel at 3Ohm load, while TPA6021A4N delivers 2W per channel at 4Ohm load. Applications requiring maximum power delivery at low impedance loads may experience reduced output capability with TPA6021A4N. Load impedance and power budget analysis is necessary for each application.

Q: Are there feature differences between these amplifiers?

A: Both devices include mute, shutdown, thermal protection, and volume control functions. TPA0252PWPR additionally integrates depop and input multiplexer features. Applications dependent on these specific features require functional verification in TPA6021A4N designs.

Q: What is the moisture sensitivity impact of MSL 2 vs. Not Applicable?

A: TPA0252PWPR carries MSL 2 rating (1 Year floor life), requiring controlled storage and handling. TPA6021A4N is Not Applicable for MSL, indicating through-hole package construction without moisture sensitivity constraints. This simplifies inventory management and reduces handling requirements for TPA6021A4N.

Q: Is the operating temperature range identical between both parts?

A: Yes, both TPA0252PWPR and TPA6021A4N operate across -40°C to 85°C (TA), ensuring thermal performance alignment for industrial and consumer applications within this specification.