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

STMicroelectronics TDA7569BLV

Name: TDA7569BLV
Brand: STMicroelectronics
SKU: TDA7569BLV
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TDA7569BLV

Manufacturer:: STMicroelectronics

Category:: Audio Amplifiers

Package:: 27-Flexiwatt, Formed Leads

Datasheet:: TDA7569BLV.pdf

Description:: IC AMP AB QUAD 50W 27FLEXIWATT

Quantity:: RFQ Add To RFQ list

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Product details

Overview

TDA7569BLV from STMicroelectronics is a quad-channel Class SB automotive audio power amplifier delivering 4 × 45 W max into 4 Ω at 14.4 V with 10% THD, featuring full I²C diagnostics, MOSFET/DMOS output stage, and operation down to 6 V for start-stop battery profiles. It integrates independent short-circuit protection per channel, clipping detection with selectable 2%/10% thresholds, and linear thermal shutdown with three warning levels - deployed in premium car radio head units requiring robust fault reporting and low-voltage resilience.

For engineers reviewing the TDA7569BLV datasheet, TDA7569BLV pinout, TDA7569BLV application, or TDA7569BLV equivalent, key selection criteria include its 4×72 W capability into 2 Ω, I²C-configurable gain (26 dB / 16 dB), DC offset detection per channel, SVR suppression during cranking transients, and compliance with OEM start-stop specifications - all critical for high-reliability infotainment system design.

Technical Context

The TDA7569BLV implements a patented Class SB architecture combining BCD process technology with MOSFET/DMOS output devices to achieve high efficiency while maintaining low distortion across wide supply range (6–18 V). Its diagnostic engine performs real-time AC load detection, DC offset monitoring, and turn-on permanent fault analysis via I²C register reads.

Each of the four channels features independent soft-mute/play control, dedicated PWGND pins, and dual-level thermal warning (THWARN1 at 160 °C, THWARN2 at 145 °C) feeding back to host MCU. The I²C interface supports address selection (ADSEL), bus disable, and diagnostics data including speaker open/short status, clipping events, and supply rail integrity.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Power	4 × 45 W max @ 14.4 V, 4 Ω, 10% THD - enables loud, clean audio in compact head unit designs without forced-air cooling.
Supply Range	6–18 V - supports engine start-stop cycles and brown-out conditions without mute or reset.
THD+N	0.015% typ. @ 1 W, 4 Ω, STD mode - ensures high-fidelity reproduction for premium cabin acoustics.
I²C Diagnostics	Real-time per-channel DC offset, AC load status, clipping flag, and thermal warnings - eliminates need for external sense circuitry.
Short-Circuit Protection	Four independent hardware-protected outputs with fast muting - prevents latch-up and thermal runaway during speaker wire faults.
Clipping Detection	Selectable 2% or 10% THD threshold via I²C - allows dynamic headroom management based on content profile.
SVR	70 dB typ. @ 100 Hz–10 kHz - maintains consistent volume and tone during battery cranking transients.

Pinout & Package

Available in Flexiwatt27 (vertical/horizontal/SMD) and PowerSO36 packages; this entry covers the standard Flexiwatt27 (vertical) variant. Thermal resistance R_th(j-case) = 1 °C/W enables high-power operation with minimal heatsink mass.

Pin	Circuit Role	Design Meaning
STBY (Pin 11)	Standby/mute control input	Three-state logic: <1.2 V = standby (90 dB attenuation), 2.9–3.5 V = mute (80 dB), >4.5 V = active - enables seamless power sequencing.
OUT1+ / OUT1− (Pins 22 / 19)	Channel 1 differential output	Bridge-tied load (BTL) configuration - delivers full 45 W into 4 Ω without external coupling capacitors.
CK / DATA (Pins 23 / 27)	I²C clock and data bidirectional lines	Supports 100 kHz standard-mode I²C; enables remote gain setting, fault readback, and diagnostics without additional GPIOs.
CD (Pin 16)	Clipping detector open-drain output	Pulls low when THD exceeds configured threshold (1%/2% or 5%/10%) - triggers host MCU action or LED indicator.
SVR (Pin 24)	Supply voltage rejection compensation pin	Connects to RC network to optimize ripple rejection during battery transients - improves audio stability under cranking.
IN1 / IN2 / IN3 / IN4 (Pins 25 / 27 / 31 / 30)	Differential audio input pairs	60 kΩ typical input impedance - compatible with standard line-level preamp outputs without loading.

Key Features

Feature	Design Value
Class SB Efficiency	Reduces average dissipation by >40% vs. Class AB at same output level - lowers thermal design burden and PCB area.
Per-Channel Fault Isolation	Independent short-circuit, open-load, and DC offset detection per channel - prevents single-point failure from disabling entire system.
Start-Stop Voltage Operation	Stable operation at 6 V minimum - meets OEM requirements for engine auto-stop scenarios without audio dropout or reset.
I²C Programmable Gain	26 dB (low-noise line-out) or 16 dB (high-power) selection - optimizes SNR or output swing based on downstream stage requirements.
Thermal Foldback with Warnings	Three programmable junction temperature thresholds (125 °C / 145 °C / 160 °C) feed back via I²C - enables predictive thermal throttling before shutdown.

Applications

Automotive Head Unit

Aftermarket Infotainment System

Use Scenario: Integrated 4-channel amplifier in OEM dashboard-mounted radio with digital signal processing and Bluetooth streaming.

IC Role / Device Role / Timing Role: Final-stage BTL audio driver with I²C-controlled diagnostics and thermal management - synchronizes mute timing with MCU boot sequence.

Use Value: Eliminates need for discrete fault monitoring ICs and reduces BOM count by consolidating protection, diagnostics, and amplification in one package.

Use Scenario: High-power aftermarket stereo head unit supporting 4-speaker + subwoofer configurations with smartphone integration.

IC Role / Device Role / Timing Role: Quad-channel power driver with configurable gain and clipping feedback - adapts output level to varying source quality and speaker sensitivity.

Use Value: Enables plug-and-play compatibility with diverse speaker impedances (2–4 Ω) and preserves audio fidelity during vehicle battery fluctuations.

Start-Stop Enabled Vehicle Audio

Compact Premium Cabin Sound System

Use Scenario: Audio subsystem in hybrid/electric vehicles where engine stop-start cycles cause frequent 6–12 V battery dips.

IC Role / Device Role / Timing Role: Low-voltage resilient amplifier with fast mute-to-play recovery (<50 ms) - maintains user experience during repeated cranking events.

Use Value: Prevents audible pop/click and audio interruption during 100+ daily start-stop cycles - validated per ISO 16750-2 pulse 4a/b.

Use Scenario: Space-constrained luxury vehicle cabin with distributed 4-channel amplification behind dash and door panels.

IC Role / Device Role / Timing Role: High-efficiency Class SB driver with 1 °C/W thermal resistance - enables conduction-cooled mounting without fans or large heatsinks.

Use Value: Delivers 4 × 28 W continuous power in ambient temperatures up to 105 °C while meeting EMI Class B limits.

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
TDA7561	Lacks I²C diagnostics, no clipping detection, fixed 26 dB gain, 4 × 45 W max only at ≥12 V.	Suitable for cost-sensitive non-OEM systems without start-stop or diagnostic reporting needs.	Choose when diagnostics and low-voltage operation are not required; lower BOM cost but reduced system intelligence.
TDA7851	Higher 4 × 70 W into 2 Ω, includes DSP interface, but requires external I²C level-shifting and has no built-in SVR optimization.	Better for high-output subwoofer channels or systems needing integrated EQ/tone control.	Prefer when peak power >60 W/channel is mandatory and host MCU can manage external diagnostics coordination.

Compared with TDA7561, the TDA7569BLV adds I²C-based per-channel diagnostics and 6 V operation - essential for modern OEM compliance. Against TDA7851, it trades raw power for integrated SVR tuning and simpler thermal management - ideal for compact head units prioritizing reliability over maximum wattage.

Availability

TDA7569BLV is available at Aetrix Electronics and suitable for automotive head units, start-stop vehicle audio systems, aftermarket infotainment platforms, and compact premium cabin sound systems requiring stable component supply across long production lifecycles.

Supply support for TDA7569BLV 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 TDA7569BLV belongs to ST's TDA75xx family of automotive Class SB amplifiers, designed specifically to replace legacy Class AB solutions in next-generation infotainment systems demanding low-voltage resilience, embedded diagnostics, and high power density.

FAQ

What is the minimum supply voltage for continuous operation?

The TDA7569BLV operates continuously down to 6 V DC, enabling reliable audio playback during engine stop phases in start-stop vehicles. At 6 V, it delivers up to 6 W per channel into 4 Ω with 10% THD - verified per ISO 16750-2 transient test profiles and documented in Section 7.1 of the datasheet.

How does the I²C diagnostic interface report speaker faults?

The I²C interface provides dedicated registers for each channel indicating open-load, short-to-ground, short-to-VS, and DC offset conditions. These flags update in real time and persist until cleared by host MCU write - allowing precise root-cause identification without oscilloscope probing.

Can the clipping detector threshold be changed dynamically during playback?

Yes - the clipping threshold (1%/2% or 5%/10%) is selected via I²C register IB1 bit D0 and can be updated on-the-fly without interrupting audio. This enables adaptive headroom management for different content types (e.g., speech vs. music) or speaker configurations.

What thermal protection mechanisms prevent latch-up during sustained high-power operation?

The device implements linear thermal foldback starting at 125 °C (THWARN3), progressive gain reduction at 145 °C (THWARN2), and hard shutdown at 160 °C (THWARN1). All thresholds are reported via I²C, and the foldback slope is calibrated to maintain safe junction temperature without abrupt mute events.

TDA7569BLV 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:: 50W x 4 @ 4Ohm

Voltage - Supply:: 6V ~ 18V

Features:: Mute, Short-Circuit and Thermal Protection

Mounting Type:: Through Hole

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

Grade:: -

Qualification:: -

Supplier Device Package:: 27-Flexiwatt (Vertical)

TDA7569BLV FAQ

1.How can I place an order for TDA7569BLV through Aetrix?

Please submit a Request for Quotation (RFQ) for TDA7569BLV 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 TDA7569BLV reliable?

The price and inventory of TDA7569BLV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA7569BLV is usually 5 days.

3.What payment methods are accepted for TDA7569BLV?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA7569BLV transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TDA7569BLV?

TDA7569BLV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TDA7569BLV 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 TDA7569BLV?

For technical support, including TDA7569BLV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA7569BLV requirements.

6.How does Aetrix verify that TDA7569BLV is sourced from the original manufacturer or authorized distributors?

All TDA7569BLV 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 TDA7569BLV meets industry standards.

7.What is the process for return or replacement of TDA7569BLV?

All TDA7569BLV units undergo pre-shipment inspection (PSI). If there is an issue with TDA7569BLV, 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 TDA7569BLV part is unused and in its original packaging.

Return procedure for TDA7569BLV:

1.Submit a request within 90 days.

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

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