TDA2050A STMicroelectronics Integrated Circuit (Transistor Outline, Vertical) In Stock
The TDA2050A is a 32 W monolithic audio power amplifier IC from STMicroelectronics in a Pentawatt (TO-220 style) vertical package. It operates from a ±4.5 V to ±25 V dual supply and delivers up to 32 W into 4 Ω with low distortion for Hi-Fi audio applications. Features built-in short-circuit and thermal protection for robust amplifier designs.
- Manufacturer
- STMicroelectronics
- Package
- Transistor Outline, Vertical
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- TDA2050A Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 32 W output power into 4 Ω from a ±25 V dual supply with low total harmonic distortion for Hi-Fi audio reproduction
- Wide ±4.5 V to ±25 V dual supply range and single-supply operation capability, suitable for both home audio and automotive 12 V applications
- Integrated short-circuit protection and thermal shutdown with over-temperature flag, reducing the need for external protection circuitry
Applications
The TDA2050A is used in consumer Hi-Fi amplifiers, home theatre receivers, and powered loudspeaker enclosures where 32 W per channel from a compact single-package solution is sufficient. Its wide dual-supply range also makes it appropriate for subwoofer amplifier modules and automotive audio power stages operating from boosted 12 V rails. The Pentawatt package bolts directly to a standard heatsink, simplifying thermal management in medium-power audio equipment designs.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TDA2050A:
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Frequently Asked Questions
What supply voltage and output power does TDA2050A provide for a home audio amplifier?
TDA2050A operates from a dual supply ranging from ±4.5 V to ±25 V and delivers up to 32 W of continuous output power into a 4 Ω loudspeaker load at the maximum supply voltage. At a more common ±20 V dual supply, it typically provides around 22 W into 8 Ω, which is sufficient for a high-quality stereo bookshelf speaker system in a living-room environment.
How does the TDA2050A protect itself from overload and overtemperature conditions?
TDA2050A integrates two on-chip protection mechanisms: a short-circuit protection circuit that limits the output current if the loudspeaker leads are accidentally bridged, and a thermal shutdown that disengages the output stage when the junction temperature exceeds approximately 150°C. These features protect both the IC and the connected loudspeaker without requiring external fuses or temperature sensors in most standard designs.
Which package does the TDA2050A use, and how is it mounted to a heatsink?
TDA2050A is housed in the Pentawatt (vertical TO-220 style) package with 5 pins. The package includes a metal tab that can be bolted or clamped directly to an aluminium heatsink using a standard M3 screw, with a thin insulating washer to isolate the tab from the heatsink if the heatsink is grounded separately. A heatsink with a thermal resistance of around 5°C/W or lower is recommended for continuous 32 W operation.
Can TDA2050A operate from a single-supply 12 V rail for an automotive application?
Yes. TDA2050A can be configured for single-supply operation by biasing the input and output to mid-supply using a capacitor-coupled output stage. From a 12 V single supply, output power is reduced to approximately 2 W to 4 W into 8 Ω, which is suitable for low-power in-car audio amplifiers or intercom systems. For higher power automotive audio, a boost converter or a ±12 V split supply can be used to take advantage of the full ±25 V rating.
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About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
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