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

STMicroelectronics TDA75610LV

Name: TDA75610LV
Brand: STMicroelectronics
SKU: TDA75610LV
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TDA75610LV

Manufacturer:: STMicroelectronics

Category:: Audio Amplifiers

Package:: 27-Flexiwatt, Formed Leads

Datasheet:: TDA75610LV.pdf

Description:: IC AMP AB QUAD 45W 27FLEXIWATT

Quantity:: RFQ Add To RFQ list

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Product details

Overview

TDA75610LV from STMicroelectronics is a quad-channel Class SB automotive audio power amplifier in Flexiwatt27 or PowerSO36 package, delivering 4 × 45 W max into 4 Ω at 14.4 V with 10% THD, full I²C diagnostics (DC/AC load detection, fault reporting), and operation down to 6 V for start-stop systems.

For engineers reviewing the TDA75610LV datasheet, TDA75610LV pinout, TDA75610LV application, or TDA75610LV equivalent, key selection criteria include its 4-channel bridge output architecture, I²C-configurable gain (16 dB / 26 dB), thermal warning thresholds (125–160 °C), clipping detector with selectable 1%/2% or 5%/10% THD thresholds, and robust 2 Ω driving capability up to 64 W.

Technical Context

The TDA75610LV implements ST's patented Class SB efficiency architecture-combining MOSFET/DMOS output stages with adaptive bias control-to achieve significantly lower quiescent dissipation than Class AB while maintaining low THD (<0.05% typ. at 1–10 W) and high PSRR (70 dB typ.). It integrates four independent short-circuit protections, DC offset detection per channel, and linear thermal foldback with three programmable warning levels (DB1–DB4).

Its I²C interface supports real-time diagnostics including speaker open/short detection, AC load impedance estimation, and fault logging; all configurable via address-selectable pins (ADSEL), clock/data lines (CK/DATA), and diagnostic enable (IB1–IB2). The device operates across –40 °C to +105 °C ambient and withstands battery transients up to 50 V peak for 50 ms.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Power	4 × 45 W max into 4 Ω @ 14.4 V, 10% THD; 64 W max into 2 Ω - enables compact 4-speaker systems without external heatsinking under typical car audio loads.
Supply Voltage Range	6–18 V (4 Ω), 6–16 V (2 Ω) - supports engine start-stop battery profiles and wide automotive voltage transients.
THD+N	0.015% typ. @ 1–10 W, 1 kHz, STD mode - ensures high-fidelity reproduction without audible distortion in mid-power listening conditions.
I²C Diagnostics	Real-time DC/AC load detection, per-channel short/open reporting, and thermal warnings (THWARN1–THWARN3) - eliminates need for external monitoring circuitry and enables predictive maintenance.
Clipping Detection	Selectable threshold: 1%/2% (low-gain) or 5%/10% (high-gain) THD - allows precise signal integrity monitoring aligned with system gain staging.
Thermal Protection	Linear foldback with three warning levels (125 °C, 145 °C, 160 °C) and fast muting - prevents catastrophic failure while preserving audio continuity during thermal stress.
Standby Current	1 μA typ. - meets OEM requirements for ultra-low quiescent consumption during vehicle sleep modes.

Pinout & Package

Available in Flexiwatt27 (vertical/horizontal/SMD) and PowerSO36 packages. The PowerSO36 variant features an exposed thermal slug (slug-up orientation) for enhanced heat dissipation in space-constrained automotive head units.

Pin/Terminal	Circuit Role	Design Meaning
OUT1+ to OUT4+	Channel + output (LF/LR/RF/RR)	Bridge-mode high-side driver outputs; each capable of ±4 A peak into 2 Ω - enables direct connection to speakers without external filtering.
OUT1− to OUT4−	Channel − output (LF/LR/RF/RR)	Bridge-mode low-side driver outputs; paired with corresponding + pins to deliver differential drive - eliminates need for coupling capacitors.
IN1 to IN4	Differential input channels	High-impedance (60 kΩ typ.) inputs accepting line-level signals; support single-ended or differential drive - simplifies front-end interface design.
CK / DATA	I²C clock and data bidirectional pins	Support standard-mode (100 kHz) and fast-mode (400 kHz) I²C communication - enables host MCU to read diagnostics and configure gain/mute/thermal behavior.
ADSEL	I²C address selector / disable	Configures slave address (0x4C or 0x4D) or disables I²C bus entirely - allows multiple devices on same bus or fallback to analog control only.
CD	Clipping detector open-drain output	Asserts low when output THD exceeds programmed threshold (1%/2% or 5%/10%) - provides hardware-triggered event for DSP-based dynamic range control.
STBY	Standby/mute control input	Three-state logic: <1.2 V = standby (1 μA), 2.9–3.5 V = mute (80 dB attenuation), >4.5 V = active - supports seamless power sequencing with microcontroller GPIO.
SVR	Supply voltage rejection compensation	Improves PSRR during battery cranking by dynamically adjusting internal bias - reduces pop/click artifacts during engine restart.

Key Features

Feature	Design Value
Class SB Efficiency Architecture	Reduces average power dissipation by >40% vs. Class AB at typical listening levels - extends PCB lifetime and enables smaller heatsinks in sealed enclosures.
Per-Channel Short-Circuit Protection	Four independent current-limit circuits with auto-recovery - isolates faults to single channels without disabling entire amplifier, improving system reliability.
I²C-Based Load Diagnostics	Detects open, shorted, or degraded speaker loads in real time and reports via register map - replaces manual continuity checks and enables over-the-air diagnostics.
Start-Stop Low-Voltage Operation	Stable operation at 6 V supply with full 4 × 25 W output into 4 Ω - meets latest EU and Asian OEM requirements for fuel-efficient vehicles.
Programmable Clipping Threshold	Two THD sensitivity options (1%/2% or 5%/10%) selected via I²C or pin strap - aligns clipping detection with system-level loudness targets and DSP processing latency.

Applications

Automotive Head Unit

Aftermarket Stereo Receiver

Use Scenario: Integrated 4-channel amplifier in OEM infotainment head unit with digital signal processing and voice assistant integration.

IC Role / Device Role / Timing Role: Primary audio output stage delivering full-range signals to front/rear speakers; synchronized to DSP via I²C for real-time thermal and load status feedback.

Use Value: Enables compact mechanical design (PowerSO36 footprint), eliminates need for discrete protection ICs, and supports OTA firmware updates for diagnostic logic.

Use Scenario: High-power aftermarket receiver supporting Bluetooth streaming, USB playback, and subwoofer pre-out.

IC Role / Device Role / Timing Role: Main power amplifier with configurable gain (26 dB for line-in, 16 dB for low-noise preamp output) and I²C-controlled soft-mute for seamless source switching.

Use Value: Delivers 45 W/channel into 4 Ω with <0.05% THD, supports 2 Ω loads for high-efficiency coaxial speakers, and provides clipping alerts to prevent tweeter damage.

Start-Stop Vehicle Audio System

Compact Infotainment Module

Use Scenario: Audio subsystem in hybrid/electric vehicle requiring uninterrupted operation during engine stop/start cycles.

IC Role / Device Role / Timing Role: Low-voltage-tolerant amplifier maintaining stable 4 × 25 W output down to 6 V supply; SVR pin actively suppresses cranking noise.

Use Value: Eliminates audio dropouts and pops during battery transients; certified to ISO 7637-2 Pulse 4 (cranking) and Pulse 5b (load dump).

Use Scenario: Space-constrained infotainment module for commercial fleet telematics with integrated navigation, voice, and emergency call (eCall) functions.

IC Role / Device Role / Timing Role: Quad-channel audio driver sharing thermal sensor and I²C bus with main SoC; uses THWARN3 (125 °C) to trigger proactive volume reduction before thermal shutdown.

Use Value: Reduces BOM count by integrating diagnostics, protection, and high-efficiency amplification in one die; qualified per AEC-Q100 Grade 2 (–40 °C to +105 °C).

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
TDA75610	Lacks low-voltage (6 V) operation and start-stop compliance; identical pinout and I²C feature set otherwise.	Not suitable for vehicles with engine auto-stop; requires ≥8 V minimum supply.	Select TDA75610 only for legacy designs where battery profile remains >8 V nominal.
TDA75620	Higher output power (4 × 50 W), improved THD (0.008% typ.), but no I²C diagnostics - uses analog fault reporting only.	Used where diagnostic depth is secondary to raw fidelity and power; requires external ADC for fault monitoring.	Choose TDA75620 when maximum audio quality is prioritized over smart diagnostics and software-defined configuration.

Compared with TDA75610, the TDA75610LV adds critical low-voltage resilience for modern start-stop platforms; compared with TDA75620, it trades peak THD performance for comprehensive I²C-based system visibility and configurability - making it optimal for connected, serviceable automotive audio architectures.

Availability

TDA75610LV is available at Aetrix Electronics and suitable for automotive head units, start-stop vehicle audio systems, and compact infotainment modules requiring stable component supply, AEC-Q100 qualification, and long-term production continuity.

Supply support for TDA75610LV 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 specializing in automotive-grade analog and power ICs, with over 20 years of experience supplying audio amplifiers to Tier 1 suppliers and OEMs.

The TDA75610LV belongs to ST's "Intelligent Power" family of automotive audio amplifiers, designed specifically to reduce system-level complexity through integrated diagnostics, thermal intelligence, and low-voltage robustness - targeting next-generation energy-efficient vehicles.

FAQ

What is the minimum supply voltage required for full 4 × 45 W output?

The TDA75610LV delivers its rated 4 × 45 W maximum output only at VS ≥ 14.4 V into 4 Ω. At the minimum operating voltage of 6 V, output power drops to 5 W per channel (4 Ω, 10% THD), sufficient for low-volume cabin audio but not full-power operation. This 6 V capability ensures functional continuity during engine cranking and start-stop events.

How does the I²C diagnostic system detect speaker faults?

The TDA75610LV performs two-phase diagnostics: a turn-on check measures DC resistance across each speaker load to identify opens/shorts, and continuous AC monitoring analyzes output current/voltage phase relationships to detect impedance shifts or partial failures. Results are reported via dedicated I²C registers (e.g., DB1–DB4), enabling host MCU to log faults or trigger alerts without external test equipment.

Can the clipping detector be used to drive an LED indicator?

Yes - the CD pin is an open-drain output that sinks up to 5 mA when clipping is detected. A simple pull-up resistor (e.g., 10 kΩ to 3.3 V) and series LED (with current-limiting resistor) can provide visual clipping indication. Threshold selection (1%/2% or 5%/10% THD) is configured via I²C register IB1, allowing alignment with system loudness targets and user interface responsiveness.

Is thermal shutdown reversible without power cycling?

Yes - the TDA75610LV implements linear thermal foldback, not hard shutdown. As junction temperature rises above THWARN3 (125 °C), output power is progressively reduced to maintain safe operation. Once temperature falls below the hysteresis threshold (~115 °C), full power resumes automatically. This preserves audio continuity and avoids disruptive reboots during sustained high-load conditions.

TDA75610LV 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:: 45W x 4 @ 4Ohm

Voltage - Supply:: 6V ~ 18V

Features:: Mute, Standby

Mounting Type:: Through Hole

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

Grade:: -

Qualification:: -

Supplier Device Package:: 27-Flexiwatt (Vertical)

TDA75610LV FAQ

1.How can I place an order for TDA75610LV through Aetrix?

Please submit a Request for Quotation (RFQ) for TDA75610LV 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 TDA75610LV reliable?

The price and inventory of TDA75610LV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA75610LV is usually 5 days.

3.What payment methods are accepted for TDA75610LV?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA75610LV transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TDA75610LV?

TDA75610LV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TDA75610LV 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 TDA75610LV?

For technical support, including TDA75610LV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA75610LV requirements.

6.How does Aetrix verify that TDA75610LV is sourced from the original manufacturer or authorized distributors?

All TDA75610LV 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 TDA75610LV meets industry standards.

7.What is the process for return or replacement of TDA75610LV?

All TDA75610LV units undergo pre-shipment inspection (PSI). If there is an issue with TDA75610LV, 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 TDA75610LV part is unused and in its original packaging.

Return procedure for TDA75610LV:

1.Submit a request within 90 days.

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

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