STMicroelectronics STA540 4-Channel Class-AB Audio Power Amplifier IC
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Prices updated: 13 Oct 2026
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About this product
The STA540 is a 4-channel class-AB audio power amplifier IC with single-ended outputs, designed for high-quality sound applications. It includes integrated short-circuit protection, thermal protection and diagnostic functions. It comes in a 15-pin Multiwatt package and is RoHS compliant.
Specifications
- Channels
- 4
- Amplifier class
- Class-AB
- Output type
- Single-ended
- Package
- Multiwatt-15 (15-pin)
- Protection
- Short-circuit, thermal, diagnostics
- Compliance
- RoHS (2002/95/EC)
Frequently asked questions
Does the STA540 have built-in protection?
Yes. According to its description, it integrates short-circuit protection, thermal protection and diagnostic functions. Check the datasheet and its errata sheet before designing the circuit.
Is the STA540 suitable for a multi-speaker audio project?
It has four channels with single-ended outputs, so it can drive four speaker outputs from one chip. Confirm the speaker impedance, supply voltage and heatsinking requirements in the datasheet for your design.
