STMicroelectronics TDA7576B
| Parameters | |
|---|---|
| Series | - |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | Multiwatt-15 (Vertical, Bent and Staggered Leads) |
| Mfr | STMicroelectronics |
| Mounting Type | Through Hole |
| Operating Temperature | -40°C ~ 150°C (TJ) |
| Type | Class AB |
| Output Type | 2-Channel (Stereo) |
| Supplier Device Package | Multiwatt-15 |
| Voltage - Supply | 8V ~ 32V |
| Max Output Power x Channels @ Load | 45W x 2 @ 4Ohm |
| Features | Mute, Short-Circuit and Thermal Protection |
| Package | Tube |
| Product Status | Active |
| Base Product Number | TDA7576 |
| REACH Status | REACH Unaffected |
| Standard Package | 25 |
| ECCN | EAR99 |
| HTSUS | 8542.33.0001 |
TDA7576B Audio Amplifier, Class-AB Audio IC 2-Channel
The TDA7576B from STMicroelectronics is a state-of-the-art quad-bridge power amplifier designed specifically for high-performance automotive audio systems, delivering exceptional sound quality and robust operation in demanding vehicular environments. This Class-AB amplifier integrates four independent channels capable of driving various speaker configurations with minimal external components, featuring advanced diagnostics and comprehensive protection mechanisms. Engineered to meet stringent automotive quality standards, it incorporates ST's unique "Smart Power" technology for efficient thermal management and fault detection, making it an ideal solution for head units, external amplifiers, and premium sound systems requiring reliable, high-fidelity audio reproduction in cars, trucks, and other vehicles.
Key Electrical & Application
The TDA7576B delivers outstanding audio performance with 4 x 45W output power into 4Ω loads at 14.4V with 10% THD, capable of handling 2Ω loads for increased power output. It operates from a 6V to 18V supply range (8V-16V recommended) with typical quiescent current of 120mA and ultra-low standby current below 100μA. Key specifications include <0.03% THD+N at 1W output, 95dB signal-to-noise ratio (A-weighted), full spectrum frequency response from 20Hz to 20kHz (±1dB), and integrated diagnostics for short-circuit, over-temperature, over-voltage, and DC offset protection. The amplifier features balanced inputs for superior noise rejection and requires minimal external components for operation.
The TDA7576B is specifically designed for automotive audio applications including car head units, external amplifier modules, and premium factory sound systems in passenger vehicles, trucks, and SUVs. Its robust design makes it suitable for original equipment manufacturer (OEM) installations and aftermarket upgrades where high power output and reliability are essential. The amplifier's comprehensive protection features make it ideal for challenging automotive environments with voltage fluctuations and temperature extremes, while its diagnostic capabilities support modern vehicle networks through the I²C bus interface for real-time monitoring and system integration.
Alternative AMP Models
● TDA75610: A similar quad-bridge automotive amplifier with higher output power capability and enhanced efficiency for premium sound systems.
● TDA7850: A popular single-chip quad-bridge solution with MOSFET output stage for improved thermal performance and sound quality.
● TDA7806A: A Class-AB amplifier with advanced digital diagnostics and I²C control interface for modern automotive infotainment systems.
● TPA3116D2: Texas Instruments' Class-D automotive amplifier offering higher efficiency and thermal performance for compact designs.
