STMicroelectronics E-TDA7562

Overview

E-TDA7562 from STMicroelectronics is a quad-channel Class-AB automotive audio power amplifier in Flexiwatt27V package, designed for car radio head units. It delivers 4×25W into 4Ω at 14.4V/1kHz/10% THD, supports I²C-controlled soft mute/st-by, offers selectable 16dB or 30dB gain per channel, and integrates real-time diagnostics for short-to-GND/Vs, speaker shorts, and DC offset detection.

For engineers reviewing the E-TDA7562 datasheet, E-TDA7562 pinout, E-TDA7562 application, or E-TDA7562 equivalent, key selection criteria include its 4-channel bridge-tied-load (BTL) topology, integrated I²C diagnostics reporting, dual-gain configuration for line-out flexibility, thermal protection with 1°C/W junction-to-case resistance, and compliance with EIAJ power standards for automotive infotainment systems.

Technical Context

The TDA7562 implements four independent DMOS BTL output stages using MultiPower BCD technology, enabling high-efficiency operation up to 60W/channel into 2Ω loads. Its I²C interface supports full digital control of mute/st-by states, front/rear channel gain selection (16dB/30dB), clipping threshold (2%/10%), and diagnostic enable/disable.

Diagnostics operate in two modes: Restart mode (per-channel fault isolation with 1ms sampling) and Diagnostic mode (100ms cycle triggered by overload, storing fault data in four diagnostic bytes). DC offset detection monitors ±2V thresholds during low-signal conditions, while short-circuit thresholds are fixed for GND/Vs faults but vary with gain setting for speaker-short detection.

Key Specifications

Pinout & Package

Package: Flexiwatt27V (vertical, 27-pin, thermally enhanced with exposed tab). Pin numbering follows top-view layout per datasheet Figure 1; pin 1 is marked with dot/dam-bar.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad-channel automotive audio amplifier applications.

Compared with TDA7561, E-TDA7562 adds clipping detection and DC offset protection for robust speaker safety; versus TPA5562QPHPRQ1, it trades Class-D efficiency for simpler layout, no external filter components, and built-in diagnostics - making it optimal for cost-sensitive, space-limited car radio designs requiring zero-additional-fault-detection-hardware.

Availability

E-TDA7562 is available at Aetrix Electronics and suitable for car radio head units, aftermarket infotainment systems, and integrated automotive display audio hubs requiring stable component supply across extended temperature ranges and automotive qualification cycles.

Supply support for E-TDA7562 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in automotive-grade analog, power, and microcontroller solutions.

The TDA7562 belongs to ST's automotive audio power amplifier product line, engineered specifically for cost-effective, high-reliability car radio applications with integrated diagnostics and flexible I²C configurability.

FAQ

What is the maximum continuous output power per channel into 2Ω?

E-TDA7562 delivers 4×60W into 2Ω loads under EIAJ test conditions (13.7V supply, 10% THD). This requires strict thermal management: junction temperature must remain ≤150°C, and the 1°C/W thermal resistance mandates direct mounting to a heatsink capable of dissipating ≥85W total power.

How does the I²C diagnostic reporting work during speaker fault events?

When diagnostic mode is enabled (IB1-D6=1), the TDA7562 performs 100ms fault characterization per channel after initial overload detection. Fault status is stored in four diagnostic bytes (DB1–DB4), where each byte maps one channel's short-to-GND, short-to-Vs, speaker-short, and DC-offset flags. Two consecutive I²C reads are required to observe state changes due to pipeline timing.

Can E-TDA7562 drive both speakers and line-level outputs simultaneously?

Yes - by configuring front channels to 30dB gain (for 4Ω speakers) and rear channels to 16dB gain (for RCA line outputs), the device supports mixed-mode operation. The 16dB setting reduces output noise to 15–30μV (20Hz–22kHz), meeting line-driver SNR requirements without external buffering.

What is the purpose of the CD_OUT pin and how is its threshold selected?

CD_OUT is an active-low open-drain pin indicating when output THD exceeds either 2% (D0=0) or 10% (D0=1) - set via IB1-D0. It drives LEDs for user feedback or triggers DSP gain reduction. Threshold selection occurs during I²C write to IB1; no external components are needed, and the pin sinks up to 15μA when asserted.