TS4890IST Equivalent & Substitute Parts

Part Overview

The TS4890IST is a Class AB mono amplifier IC manufactured by STMicroelectronics, designed for low-power audio applications requiring 1W output at 8Ω load impedance. This surface-mount device operates across a 2.5V to 5.5V supply range and includes integrated depop, standby, and thermal protection features. The part is active in production status with RoHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and regulatory compliance can be maintained across different manufacturers or packaging configurations. Alternative models address supply availability, packaging preferences, or enhanced feature sets while preserving core amplification characteristics.

Substiute Parts

TS4890IST

STMicroelectronicsIn Stock: 32031TS4890IST Datasheet

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LM4889MM/NOPB

Texas InstrumentsIn Stock: 16999LM4889MM/NOPB Datasheet

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LM4890MM/NOPB

Texas InstrumentsIn Stock: 16739LM4890MM/NOPB Datasheet

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LM4890MMX/NOPB

Texas InstrumentsIn Stock: 19155LM4890MMX/NOPB Datasheet

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TPA6203A1DGN

Texas InstrumentsIn Stock: 2283TPA6203A1DGN Datasheet

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TPA6203A1DGNR

Texas InstrumentsIn Stock: 70459TPA6203A1DGNR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TS4890IST is determined by the following criteria:

Primary Compatibility Parameters:

• Amplifier Type: Class AB
• Output Configuration: 1-Channel (Mono)
• Supply Voltage Range: Minimum 2.5V, Maximum 5.5V
• Operating Temperature Range: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package Footprint: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
• Regulatory Compliance: RoHS3 Compliant, REACH Unaffected

Secondary Compatibility Parameters:

• Moisture Sensitivity Level: 1 (Unlimited)
• ECCN: EAR99
• HTSUS: 8542.33.0001

Substitute parts maintain identical or superior electrical specifications within the defined parameter ranges. Output power ratings at 8Ω load may equal or exceed 1W. Feature sets may include additional protection or control mechanisms without compromising core functionality. Packaging format variations (Tape & Reel, Cut Tape, Tube) do not affect electrical equivalence but address procurement and assembly requirements.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain active production status with full RoHS3 compliance and REACH unaffected designation, ensuring regulatory alignment with the TS4890IST across current and future procurement cycles.

Texas Instruments Boomer® Series (LM4889MM/NOPB, LM4890MM/NOPB, LM4890MMX/NOPB): These parts provide direct electrical equivalence at 1W output power with extended supply voltage tolerance (2.2V minimum versus 2.5V). Feature sets include depop and shutdown functionality with thermal protection. Packaging variations address different assembly workflows: Cut Tape & Digi-Reel® for LM4889MM/NOPB, and Tape & Reel for LM4890MM/NOPB and LM4890MMX/NOPB. All three maintain identical thermal and moisture specifications.

Texas Instruments TPA6203A1 Series (TPA6203A1DGN, TPA6203A1DGNR): These parts deliver enhanced output power at 1.25W while maintaining the 2.5V to 5.5V supply range. The exposed pad package variant provides improved thermal dissipation. Feature differentiation includes differential inputs and depop capability (TPA6203A1DGNR). Packaging options include Tube (TPA6203A1DGN) and Cut Tape & Digi-Reel® (TPA6203A1DGNR). These parts are suitable for applications requiring higher output power within the same footprint and thermal envelope.

All substitute parts share identical operating temperature range, moisture sensitivity classification, and mechanical mounting requirements with the TS4890IST.

Frequently Asked Questions (FAQ)

Q: Can the LM4889MM/NOPB directly replace the TS4890IST in existing PCB designs?

A: Yes. Both parts share identical 8-TSSOP, 8-MSOP package footprint (0.118", 3.00mm width), operating temperature range (-40°C ~ 85°C), and moisture sensitivity level (1, Unlimited). The LM4889MM/NOPB operates across 2.2V to 5.5V, which encompasses the TS4890IST supply range of 2.5V to 5.5V. Pin-level compatibility and functional equivalence are maintained for Class AB mono amplification at 1W output.

Q: What is the difference between LM4890MM/NOPB and LM4890MMX/NOPB?

A: Both parts are electrically identical Class AB mono amplifiers with 1W output at 8Ω, identical supply voltage range (2.2V ~ 5.5V), and matching thermal specifications. The primary distinction is packaging format: LM4890MM/NOPB is supplied in Tape & Reel, while LM4890MMX/NOPB is also supplied in Tape & Reel. Both maintain the same 8-TSSOP, 8-MSOP footprint and are suitable for automated assembly processes.

Q: Why would the TPA6203A1DGNR be selected over the TS4890IST?

A: The TPA6203A1DGNR provides 1.25W output power compared to the TS4890IST's 1W, delivering 25% higher power capability within the same package footprint and supply voltage range. The exposed pad design improves thermal performance. This part is selected when applications require enhanced output power or improved thermal management without redesigning the PCB layout.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All identified substitute parts—LM4889MM/NOPB, LM4890MM/NOPB, LM4890MMX/NOPB, TPA6203A1DGN, and TPA6203A1DGNR—carry RoHS3 compliance certification and REACH unaffected status, matching the TS4890IST regulatory profile.

Q: What packaging formats are available for these substitute parts?

A: Packaging options vary by part number. LM4889MM/NOPB is supplied in Cut Tape & Digi-Reel®. LM4890MM/NOPB and LM4890MMX/NOPB are supplied in Tape & Reel. TPA6203A1DGN is supplied in Tube. TPA6203A1DGNR is supplied in Cut Tape & Digi-Reel®. Selection depends on procurement volume, assembly equipment compatibility, and inventory management requirements.

Q: Do all substitute parts include thermal protection?

A: Yes. All substitute parts include integrated thermal protection. The TS4890IST, LM4889MM/NOPB, LM4890MM/NOPB, LM4890MMX/NOPB, TPA6203A1DGN, and TPA6203A1DGNR all feature thermal protection as standard functionality.

Q: What is the significance of the exposed pad in the TPA6203A1 package?

A: The exposed pad in the 8-HVSSOP package variant of the TPA6203A1 series provides direct thermal coupling to the PCB ground plane, improving heat dissipation during high-power operation. This design feature supports the higher 1.25W output power rating and is beneficial in thermally constrained applications.