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

STMicroelectronics TDA7562B

Name: TDA7562B
Brand: STMicroelectronics
SKU: TDA7562B
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TDA7562B

Manufacturer:: STMicroelectronics

Category:: Audio Amplifiers

Package:: 27-Flexiwatt, Formed Leads

Datasheet:: TDA7562B.pdf

Description:: IC AMP AB QUAD 60W 27FLEXIWATT

Quantity:: RFQ Add To RFQ list

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Product details

Overview

TDA7562B from STMicroelectronics is a quad-channel Class-AB automotive audio power amplifier in Flexiwatt27 package, featuring MOSFET output stage, 4 × 46 W @ 14.4 V / 4 Ω (10% THD), I²C-controlled diagnostics, and independent short-circuit protection per channel. It serves as the main speaker driver in mid-tier car radios with integrated fault reporting.

For engineers reviewing the TDA7562B datasheet, TDA7562B pinout, TDA7562B application, or TDA7562B equivalent, key selection criteria include diagnostic granularity (per-channel DC offset, clipping, open/short detection), gain programmability (16 dB / 30 dB), thermal robustness (R_{th j-case} = 1 °C/W), and automotive-grade operating range (−40 to +105 °C).

Technical Context

The TDA7562B implements a BCDMOS-based quad bridge architecture with four fully independent amplifier channels, each supporting selectable voltage gain (16 dB or 30 dB) via I²C register IB1. Its diagnostics subsystem operates in two modes: turn-on pulse-based pre-bias verification and permanent real-time monitoring with 1 ms sampling intervals.

Each channel integrates dedicated hardware comparators for DC offset (>±2 V), short-to-GND/VS (thresholds: ±1.2 V), and load impedance classification (open load >85 Ω, shorted load <0.5 Ω in amplifier mode). Fault status is reported via I²C registers DB1–DB4, enabling microcontroller-level speaker health mapping without external sensing.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Power	4 × 46 W @ 14.4 V / 4 Ω, 10% THD - delivers full-range audio to four 4 Ω speakers without forced derating in compact car radio heatsinks.
THD+N	0.02% typ. @ 1–10 W, 1 kHz, 4 Ω - ensures low audible distortion across typical listening levels.
Supply Range	8–18 V DC - compatible with automotive battery transients (ISO 7637-2 Pulse 4) and cold-crank operation down to 6.5 V min. startup threshold.
I²C Interface	Up to 400 kHz clock, 2.3–5 V logic high - enables configuration and diagnostics readback using standard automotive microcontroller peripherals.
Thermal Resistance	R_{th j-case} = 1 °C/W - allows 85 W total dissipation at T_case = 70 °C, supporting sustained high-power output with minimal heatsink mass.
Fault Detection	Per-channel DC offset (>±2 V), clipping (2%/10% THD thresholds), and load impedance (0.5–85 Ω range) - eliminates need for external speaker protection circuitry.

Pinout & Package

Package: Flexiwatt27 (27-pin, vertical-mount, heat-tab-down), thermally optimized for PCB copper pour attachment and automotive under-dash convection cooling.

Pin/Terminal	Circuit Role	Design Meaning
V_S	Main power supply input	Accepts 8–18 V DC; internal overvoltage clamp protects up to 50 V peak (50 ms); connects directly to heatsink tab for thermal path.
OUT1–OUT4	Bridge-output terminals (4 channels)	Each pair drives one speaker differentially; no external bootstrap capacitors required due to integrated high-side gate drivers.
IN1–IN4	Differential input pins	Accepts 0.1–5 V_RMS signals; 100 kΩ input impedance minimizes source loading in line-level preamp interfaces.
SDA/SCL	I²C data/clock lines	Enable real-time read of DB1–DB4 diagnostic registers and write to IB1/IB2 configuration registers; pull-up required externally.
STBY/MUTE	Three-state control pin	0–1.5 V = standby (1 μA quiescent), 3.5–5 V = mute (80 dB attenuation), >7 V = active operation - supports single-pin system-level power sequencing.
CLIP1–CLIP4	Clipping detector outputs	Open-drain outputs assert low when THD exceeds programmed threshold (2% or 10%), enabling LED indicators or DSP-triggered volume limiting.

Key Features

Feature	Design Value
Per-channel diagnostics	Independent detection of open load (>85 Ω), shorted load (<0.5 Ω), DC offset (>±2 V), and clipping - enables precise speaker fault localization without shared sensing paths.
I²C-configurable gain	Selectable 16 dB or 30 dB voltage gain per channel via IB1 register - matches varying source signal levels (line-out vs. preamp) without external resistors.
Turn-on diagnostic	Subsonic current pulse applied before amplifier biasing - verifies speaker wiring integrity (no audible pop) and prevents damage from miswired loads prior to playback.
MOSFET output stage	BCDMOS DMOS transistors with 6 A repetitive peak current rating - sustains dynamic bass transients into 2 Ω loads without thermal shutdown or crossover distortion.
Automotive thermal design	R_{th j-case} = 1 °C/W and −40 to +105 °C operating range - meets AEC-Q100 Grade 2 requirements for under-dash mounting without forced airflow.

Applications

Car Radio Audio System

Aftermarket Head Unit

Use Scenario: Integrated 4-channel amplifier in OEM car stereo head unit with digital signal processor and CAN bus interface.

IC Role / Device Role / Timing Role: Final-stage speaker driver with real-time diagnostics reported to MCU over I²C; synchronizes mute timing with display boot sequence.

Use Value: Eliminates discrete speaker protection ICs and reduces BOM count by 3 components per channel while enabling dealer-level speaker fault logging.

Use Scenario: High-fidelity aftermarket head unit supporting 4-speaker front/rear configuration and Bluetooth streaming.

IC Role / Device Role / Timing Role: Main audio power stage with configurable gain and clipping feedback to DSP; STBY/MUTE pin coordinated with touch-panel wake-up.

Use Value: Enables automatic speaker impedance detection during setup wizard, preventing user misconfiguration of 2 Ω vs. 4 Ω output modes.

Compact Infotainment Module

Commercial Vehicle Audio Hub

Use Scenario: Space-constrained infotainment module in electric vehicle dashboard with shared thermal management.

IC Role / Device Role / Timing Role: Quad amplifier with thermal foldback and I²C-read fault status; interfaces to vehicle controller via LIN for error reporting.

Use Value: Maintains 46 W/channel output with only 1.0 °C/W thermal resistance, reducing heatsink volume by 40% versus legacy SO-36 solutions.

Use Scenario: Ruggedized audio hub in delivery van or bus with extended temperature cycling and vibration exposure.

IC Role / Device Role / Timing Role: Fault-tolerant speaker driver with permanent diagnostics; detects intermittent opens/shorts during road shock events.

Use Value: Reports degraded speaker connections before complete failure, allowing predictive maintenance alerts via telematics gateway.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TDA7561	Lower output power (4 × 35 W @ 4 Ω), no I²C diagnostics, fixed 26 dB gain	Lacks per-channel fault reporting and gain configurability; requires external mute logic	Choose for cost-sensitive designs where diagnostics are handled by MCU via analog comparators.
TPA5560QPHPRQ1	4 × 50 W @ 4 Ω, integrated spread-spectrum PWM, no analog inputs, SPI interface only	Digital-input Class-D architecture; incompatible with analog preamp sources without ADC	Choose for new designs with digital audio transport (TDM/I²S) and strict EMI requirements.

Compared with TDA7562B, TDA7561 sacrifices diagnostics and flexibility for lower cost and smaller footprint, while TPA5560QPHPRQ1 trades analog compatibility and thermal simplicity for higher efficiency and digital-native integration - making TDA7562B optimal for analog-source automotive upgrades requiring field-serviceable fault visibility.

Availability

TDA7562B is available at Aetrix Electronics and suitable for car radio audio systems, aftermarket head units, compact infotainment modules, and commercial vehicle audio hubs requiring stable component supply across automotive production lifecycles.

Supply support for TDA7562B 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, industrial, and power management ICs with broad AEC-Q100 qualified portfolios.

The TDA7562B belongs to ST's TDA7xxx automotive audio amplifier family, engineered specifically for cost-effective, diagnostics-rich car radio platforms requiring high-fidelity analog amplification without external protection circuitry.

FAQ

What is the minimum supply voltage required to enable the TDA7562B?

The TDA7562B requires a minimum supply voltage of 6.5 V to initiate startup (V_AM threshold), but stable operation begins at 8 V. Below 6.5 V, the device remains in undervoltage lockout; above 8 V, all functions-including I²C communication and diagnostics-become fully operational per datasheet Table 4.

How does the turn-on diagnostic avoid audible noise during speaker verification?

The turn-on diagnostic applies a subsonic (≤20 Hz), low-energy current pulse before amplifier biasing, ensuring no acoustic energy reaches the speaker. The 100 ms acquisition window captures DC response only, and the entire process completes before the output stage exits high-impedance state-eliminating pop or thump artifacts.

Can the TDA7562B drive 2 Ω speakers continuously?

Yes: it delivers 4 × 68 W into 2 Ω loads at 14.4 V (10% THD), supported by its 6 A repetitive peak output current rating and 1 °C/W thermal resistance. Sustained operation requires adequate PCB copper area (≥400 mm² per channel) and ambient temperature ≤70 °C to maintain junction temperature below 150 °C.

What fault conditions trigger automatic channel shutdown?

Automatic shutdown occurs on detection of short-to-GND/VS (via comparator thresholds), DC offset exceeding ±2 V, or sustained clipping beyond programmed THD level. Each channel shuts down independently; recovery requires either removal of fault condition (restart mode) or I²C-initiated reset (diagnostic mode).

TDA7562B 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:: 60W x 4 @ 2Ohm

Voltage - Supply:: 8V ~ 18V

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

Mounting Type:: Through Hole

Operating Temperature:: -40°C ~ 105°C (TA)

Grade:: -

Qualification:: -

Supplier Device Package:: 27-Flexiwatt (Vertical)

TDA7562B FAQ

1.How can I place an order for TDA7562B through Aetrix?

Please submit a Request for Quotation (RFQ) for TDA7562B 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 TDA7562B reliable?

The price and inventory of TDA7562B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA7562B is usually 5 days.

3.What payment methods are accepted for TDA7562B?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA7562B transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TDA7562B?

TDA7562B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TDA7562B 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 TDA7562B?

For technical support, including TDA7562B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA7562B requirements.

6.How does Aetrix verify that TDA7562B is sourced from the original manufacturer or authorized distributors?

All TDA7562B 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 TDA7562B meets industry standards.

7.What is the process for return or replacement of TDA7562B?

All TDA7562B units undergo pre-shipment inspection (PSI). If there is an issue with TDA7562B, 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 TDA7562B part is unused and in its original packaging.

Return procedure for TDA7562B:

1.Submit a request within 90 days.

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

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