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Home > Products > Integrated Circuits (ICs) > Linear > Audio Amplifiers

STMicroelectronics TDA7563BH

Name: TDA7563BH
Brand: STMicroelectronics
SKU: TDA7563BH
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TDA7563BH

Manufacturer:: STMicroelectronics

Category:: Audio Amplifiers

Package:: 27-Flexiwatt, Formed Leads

Datasheet:: TDA7563BH.pdf

Description:: IC AMP AB QUAD 75W 27FLEXIWATT

Quantity:: RFQ Add To RFQ list

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Product details

Overview

TDA7563BH from STMicroelectronics is a quad-channel Class SB (high-efficiency) car audio power amplifier in Flexiwatt27 horizontal package, delivering up to 4 × 50 W into 4 Ω at 14.4 V with 10% THD, featuring integrated I²C diagnostics, independent front/rear soft mute/play, selectable 30 dB/16 dB gain, and DC/AC load detection for automotive head units.

For engineers reviewing the TDA7563BH datasheet, TDA7563BH pinout, TDA7563BH application, or TDA7563BH equivalent, this device supports real-time speaker fault reporting via I²C, thermal foldback with multiple warning levels, clipping detection with configurable 2%/10% thresholds, and full short-circuit protection per channel - critical for robust OEM infotainment system design.

Technical Context

The TDA7563BH implements a DMOS-based quad bridge output stage using Multipower BCD technology, enabling high efficiency (Class SB) and low distortion (<0.03% THD at 1 W, 1 kHz, 4 Ω). Its architecture integrates independent channel diagnostics, linear thermal shutdown, and dual-mode operation (power amplifier or line driver) selectable via I²C register IB1.

Diagnostic functionality includes turn-on pulse-based fault detection (short-to-GND/Vs, open/shorted speaker), permanent AC/DC monitoring, and I²C-accessible status registers (DB1–DB4) for each channel. The device supports standby/mute control via dedicated pins and features programmable gain, high-efficiency enable/disable, and SVR >50 dB across 100 Hz–10 kHz.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Power	4 × 50 W max @ 14.4 V, 4 Ω, 10% THD - enables high-fidelity multi-zone audio without external heatsink oversizing.
THD+N	0.03% typ. @ 1 W, 1 kHz, 4 Ω, STD mode - ensures clean mid-bass reproduction in compact automotive enclosures.
I²C Diagnostics	Full DC/AC load detection per channel via DB1–DB4 registers - eliminates need for external sense circuitry in speaker protection systems.
Clipping Detection	Selectable 2% or 10% THD threshold on CD pin - allows precise signal integrity monitoring for dynamic range optimization.
Thermal Protection	Linear thermal foldback with multiple warning levels - prevents abrupt shutdown during sustained high-power playback in confined dash environments.
Supply Voltage Range	8–18 V operating, 28 V absolute max - compatible with automotive battery transients including load dump.
Standby Current	1 µA typ. @ VSBY = 0 V - meets OEM requirements for ultra-low quiescent power in always-on infotainment gateways.

Pinout & Package

Package: Flexiwatt27 (horizontal), slug-down configuration with exposed thermal pad on bottom surface for PCB-level heat dissipation. Thermal resistance junction-to-case is 1 °C/W.

Pin	Circuit Role	Design Meaning
1 (STBY)	Standby/Mute control input	Logic-low (≤1.5 V) enters standby; 3.5–5 V mutes outputs; 7–VS enables operation - supports three-state system-level power sequencing.
2 (MUTE)	Dedicated mute control input	Independent of STBY; enables fast muting without disrupting bias state - critical for click/pop suppression during source switching.
3 (CD)	Clipping detector output	Open-drain active-low signal triggered when THD exceeds configured threshold - drives LED or MCU interrupt for real-time audio limiting.
4–7, 9–12, 14–17, 19–22 (OUTx)	Quad bridge output terminals	Four fully independent high-side/low-side DMOS pairs - supports 4× single-ended or 2× BTL configurations with no shared current paths.
8, 13, 18, 23 (VS)	Power supply inputs	Four separate VS pins reduce trace inductance and improve channel isolation - minimizes crosstalk (<60 dB) in multi-speaker layouts.
24–27 (SCL, SDA, CLK, DATA)	I²C bus interface	Standard 400 kHz I²C with internal pull-ups - enables daisy-chained diagnostics across multiple TDA7563BH units in premium head units.

Key Features

Feature	Design Value
Class SB high-efficiency mode	Reduces average power dissipation by up to 50% vs. Class AB - lowers thermal design load and enables smaller metal chassis in space-constrained dash modules.
Turn-on diagnostic pulse	Subsonic current pulse (≤20 Hz) verifies speaker wiring integrity before amplification - prevents damage from miswired loads during power-up.
Per-channel short-circuit protection	Four independent DMOS current limiters with auto-recovery - maintains operation of remaining channels during single-speaker fault events.
I²C-accessible fault registers	DB1–DB4 provide real-time status of open/shorted speaker, short-to-rail, and DC offset per channel - enables predictive maintenance alerts in connected vehicles.
Gain-selectable line output	30 dB (speaker drive) / 16 dB (line-level preamp) modes - simplifies integration with external DSPs or active subwoofers without external attenuators.

Applications

Automotive Head Unit

Premium Infotainment System

Use Scenario: Integrated 4-channel amplifier in OEM dashboard radio with Bluetooth, navigation, and voice assistant.

IC Role / Device Role / Timing Role: Primary audio power stage driving front/rear speakers with real-time diagnostics over I²C bus.

Use Value: Eliminates need for discrete fault-sensing circuitry; reduces BOM count by 7 components per channel while enabling automated speaker health reporting.

Use Scenario: Multi-zone audio distribution in luxury vehicle with rear-seat entertainment and active noise cancellation.

IC Role / Device Role / Timing Role: Quad-channel output driver feeding DSP-controlled speaker arrays with synchronized clipping detection and thermal telemetry.

Use Value: Enables adaptive power management via I²C - dynamically adjusts gain and efficiency mode based on cabin occupancy and ambient noise profiles.

Aftermarket Car Stereo

Marine Audio Amplifier

Use Scenario: Compact 4×50 W amplifier module in DIN-sized aftermarket receiver with touchscreen UI and app control.

IC Role / Device Role / Timing Role: Main power amplifier with STBY/MUTE pin coordination for seamless source switching and firmware updates.

Use Value: 1 µA standby current extends battery life during vehicle off-state; 28 V absolute max rating withstands marine voltage spikes.

Use Scenario: Waterproof audio system in yachts with salt-humidity exposure and wide-temperature operation.

IC Role / Device Role / Timing Role: Ruggedized power stage with enhanced ESD protection and thermal foldback for continuous high-SPL playback in humid environments.

Use Value: Linear thermal shutdown prevents thermal cycling stress; Flexiwatt27 horizontal package allows conformal coating over entire IC body without voiding thermal path.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TDA7563B	Flexiwatt27 vertical package; identical electrical specs and diagnostics	Requires vertical PCB mounting; same thermal performance but different mechanical footprint	Select when board layout uses vertical heatsink orientation or legacy Flexiwatt27 tooling.
TDA7563BPD	PowerSO36 package; R_{th j-case} = 1 °C/W (same), but higher pin count and slug-up thermal interface	Supports higher-density routing and automated optical inspection; requires different solder stencil	Prefer for new designs targeting SMT automation and improved long-term reliability under vibration.

Compared with TDA7563B (vertical) and TDA7563BPD (PowerSO36), the TDA7563BH offers identical electrical performance and diagnostics but enables horizontal PCB placement - critical for low-profile head unit modules where Z-height is constrained by display bezel clearance.

Availability

TDA7563BH is available at Aetrix Electronics and suitable for automotive head units, premium infotainment systems, and marine audio amplifiers requiring stable component supply, long-lifecycle support, and AEC-Q100-aligned manufacturing traceability.

Supply support for TDA7563BH 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, specializing in automotive-grade analog, power, and microcontroller solutions with ISO/TS 16949-certified manufacturing.

The TDA7563BH belongs to ST's TDA75xx family of automotive audio amplifiers, designed specifically for cost-sensitive yet feature-rich car radios requiring integrated diagnostics, high efficiency, and robust fault tolerance in harsh electrical environments.

FAQ

What is the maximum safe operating temperature for the TDA7563BH junction?

The absolute maximum junction temperature is 150 °C, but ST recommends maintaining T_j ≤ 125 °C during continuous operation. The device implements linear thermal foldback starting at ~110 °C case temperature, reducing output power gradually to prevent sudden shutdown - essential for maintaining audio continuity in hot-climate vehicle cabins.

Can the TDA7563BH drive 2 Ω loads continuously?

Yes - it delivers up to 4 × 72 W into 2 Ω at 14.4 V with 10% THD, but only in short bursts due to thermal limits. Continuous 2 Ω operation requires forced airflow or heatsink derating; the datasheet specifies 55 W/channel (EIAJ) under sustained conditions. Internal thermal foldback activates if average power exceeds safe dissipation limits.

How does the I²C diagnostic data map to physical speaker faults?

Each channel's DB1–DB4 registers report discrete flags: DB1 = short-to-GND/Vs, DB2 = open/shorted speaker, DB3 = DC offset, DB4 = clipping status. For example, DB2[1:0] = 10b indicates "open load" on channel 1, directly correlating to measured impedance >130 Ω - enabling firmware to disable that channel and alert the user without interrupting other zones.

Is the clipping detector (CD pin) compatible with standard logic interfaces?

Yes - the CD pin is an open-drain output with 5 V tolerant capability and ≤5 µA leakage. It pulls low when THD exceeds the selected threshold (2% or 10%), and can directly drive microcontroller GPIOs, optocouplers, or LEDs without external level-shifting. Pull-up to 3.3 V or 5 V is required per application voltage domain.

TDA7563BH Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 27-Flexiwatt, Formed Leads

Packaging:: Tube

Product Status:: Active

Type:: Class AB

Output Type:: 4-Channel (Quad)

Max Output Power x Channels @ Load:: 75W x 4 @ 2Ohm

Voltage - Supply:: 8V ~ 18V

Features:: I2C, Mute, Short-Circuit and Thermal Protection, Standby

Mounting Type:: Through Hole

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Supplier Device Package:: 27-Flexiwatt (Horizontal)

TDA7563BH FAQ

1.How can I place an order for TDA7563BH through Aetrix?

Please submit a Request for Quotation (RFQ) for TDA7563BH on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for TDA7563BH reliable?

The price and inventory of TDA7563BH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA7563BH is usually 5 days.

3.What payment methods are accepted for TDA7563BH?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA7563BH transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TDA7563BH?

TDA7563BH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TDA7563BH order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for TDA7563BH?

For technical support, including TDA7563BH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA7563BH requirements.

6.How does Aetrix verify that TDA7563BH is sourced from the original manufacturer or authorized distributors?

All TDA7563BH products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TDA7563BH meets industry standards.

7.What is the process for return or replacement of TDA7563BH?

All TDA7563BH units undergo pre-shipment inspection (PSI). If there is an issue with TDA7563BH, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The TDA7563BH part is unused and in its original packaging.

Return procedure for TDA7563BH:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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