STA328 STMicroelectronics Integrated Circuit (Small Outline Packages) In Stock
STMicroelectronics STA328 is a Class-AB audio amplifier IC supporting mono and stereo configurations up to 85°C in a 36-pin PowerSO package with integrated heat slug. Delivers high-quality audio output for consumer electronics applications. Available from stock with worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- Small Outline Packages
- Pin Count
- 36
- Lifecycle
- OBSOLETE
- Datasheet
- STA328 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -20.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Class-AB mono/stereo audio amplifier architecture delivering low distortion audio output in a single IC
- 36-pin PowerSO package with integrated heat slug enabling efficient thermal dissipation without external heatsink
- Up to 85°C operating temperature supporting demanding consumer audio amplifier reliability requirements
Applications
The STA328 is designed for consumer audio amplifier applications including home theater receivers, soundbars, portable Bluetooth speakers, and multi-channel audio docking stations requiring high-fidelity Class-AB amplification. Its integrated heat slug in the 36-pin PowerSO package allows efficient thermal management on compact PCBs without external heatsink hardware, reducing overall system size and assembly cost. The mono/stereo configuration flexibility makes it adaptable for both single-channel subwoofer drivers and full stereo left/right channel amplification in consumer electronics platforms.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Consumer IC Type | CONSUMER CIRCUIT |
| JESD-30 Code | R-PDSO-G36 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SSOP36,.56 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 3.6V |
| Supply Voltage-Min (Vsup) | 3V |
| Surface Mount | YES |
| Temperature Grade | OTHER |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for STA328:
Frequently Asked Questions
What audio amplifier topology does STA328 use, and how does it affect audio fidelity versus Class-D alternatives?
The STA328 uses a Class-AB amplifier topology, which produces inherently lower total harmonic distortion (THD) than switching Class-D designs, making it preferred for high-fidelity home audio equipment where audio quality is prioritized over power efficiency at output levels below 10 W per channel.
How does the PowerSO package with heat slug help manage thermal performance of STA328 in a compact enclosure?
The 36-pin PowerSO package integrates a metal heat slug on the underside, providing a direct thermal path to the PCB copper plane or a small adhesive heatsink pad, enabling heat dissipation of several watts without the need for a separate clip-on heatsink in slim soundbar or docking station enclosures.
For a stereo desktop speaker amplifier design, what configuration options does STA328 offer?
The STA328 supports both mono bridged-tied-load (BTL) and stereo single-ended output configurations, allowing designers to use a single IC for a 2-channel stereo speaker output or bridge both amplifiers for a higher-power mono channel driving an 8-ohm or 4-ohm woofer at up to 85°C ambient.
What maximum operating temperature does STA328 support, and how does this affect reliability in consumer amplifier products?
The STA328 operates up to 85°C, which covers typical consumer electronics operating conditions including compact audio enclosures with limited airflow, ensuring reliable long-term operation without thermal shutdown during continuous music playback at moderate output power levels of 5 W to 15 W.
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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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