PAM8303CCYC Equivalent & Substitute Parts

Part Overview

The PAM8303CCYC is a Class D monaural amplifier IC manufactured by Diodes Incorporated, designed for low-power audio applications requiring compact surface-mount integration. This device delivers 3W output power at 4Ω load impedance and operates across a 2.8V to 5.5V supply voltage range. The PAM8303CCYC is classified as obsolete, necessitating identification of functionally equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain compatibility with the mono amplifier topology, thermal management capabilities, and protection features while accommodating potential differences in packaging and electrical specifications.

Substiute Parts

PAM8303CCYC

Diodes IncorporatedIn Stock: 1056PAM8303CCYC Datasheet

Current PartRFQ

TAS2555YZT

Texas InstrumentsIn Stock: 2322TAS2555YZT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PAM8303CCYC is determined by the following critical parameters:

Functional Requirements:

• Amplifier topology must be Class D
• Channel configuration must be 1-Channel (Mono)
• Operating temperature range must encompass -40°C ~ 85°C
• Mounting type must be Surface Mount

Electrical Compatibility Criteria:

• Supply voltage range must overlap with or extend the 2.8V ~ 5.5V specification
• Output power capability must meet or exceed 3W at 4Ω load
• Protection features must include Short-Circuit and Thermal Protection as minimum requirements

Compliance & Regulatory:

• RoHS3 compliance required
• Moisture Sensitivity Level 1 (Unlimited) preferred
• REACH Unaffected status required

The TAS2555YZT from Texas Instruments qualifies as a substitute based on matching Class D mono topology, identical operating temperature range, surface-mount configuration, and superior output power specification (5.7W at 4Ω). Both devices maintain equivalent protection features and regulatory compliance status.

Parameter Comparison

Engineering Selection Recommendations

Primary Consideration: Product Status

The PAM8303CCYC is classified as obsolete, making the TAS2555YZT the appropriate selection for new designs and production continuity. The TAS2555YZT maintains active product status with established supply chain availability (2212 pcs in stock).

Electrical Performance

The TAS2555YZT delivers 5.7W output power at 4Ω load, exceeding the PAM8303CCYC specification of 3W. This increased power capability provides design margin for audio applications without requiring circuit redesign at the amplifier stage.

Supply Voltage Consideration

The TAS2555YZT operates within a narrower supply voltage range (1.65V ~ 1.95V) compared to the PAM8303CCYC (2.8V ~ 5.5V). Circuit designs utilizing the PAM8303CCYC at supply voltages above 1.95V require voltage regulation or alternative substitution strategies.

Packaging and Integration

The TAS2555YZT uses a 42-UFBGA/DSBGA package, differing from the PAM8303CCYC 8-WDFN package. PCB layout modifications are required to accommodate the different package footprint and pin configuration.

Compliance and Reliability

Both devices maintain ROHS3 compliance, unlimited moisture sensitivity level, and REACH unaffected status, ensuring regulatory alignment for production environments.

Frequently Asked Questions (FAQ)

Q: Can the TAS2555YZT directly replace the PAM8303CCYC without PCB modifications?

A: No. The TAS2555YZT uses a 42-UFBGA/DSBGA package while the PAM8303CCYC uses an 8-WDFN package. PCB layout redesign is required to accommodate the different footprint, pin count, and pinout configuration.

Q: What is the impact of the different supply voltage ranges?

A: The TAS2555YZT operates at 1.65V ~ 1.95V, a narrower range than the PAM8303CCYC (2.8V ~ 5.5V). Existing designs operating the PAM8303CCYC above 1.95V require voltage regulation or alternative component selection.

Q: Does the higher output power of the TAS2555YZT affect circuit compatibility?

A: The TAS2555YZT delivers 5.7W at 4Ω compared to 3W for the PAM8303CCYC. This increased capability is compatible with existing load impedances and provides additional design margin. No circuit modifications are required to accommodate higher power output.

Q: Are protection features equivalent between the two devices?

A: Both devices include Short-Circuit and Thermal Protection. The PAM8303CCYC additionally includes Depop protection. Designs requiring depop functionality must evaluate alternative substitutes or implement external depop circuitry.

Q: What are the compliance and regulatory implications of substitution?

A: Both devices maintain ROHS3 compliance, unlimited moisture sensitivity level (MSL 1), and REACH unaffected status. No additional compliance documentation is required for substitution in regulated applications.

Q: Is the TAS2555YZT available in the same packaging as the PAM8303CCYC?

A: No. The TAS2555YZT is available only in 42-UFBGA/DSBGA package configuration. No 8-WDFN variant exists for this device.

Q: How do the operating temperature ranges compare?

A: Both devices operate across identical temperature ranges (-40°C ~ 85°C), ensuring thermal compatibility in equivalent application environments.