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

STMicroelectronics TDA75616LV-48X

Name: TDA75616LV-48X
Brand: STMicroelectronics
SKU: TDA75616LV-48X
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TDA75616LV-48X

Manufacturer:: STMicroelectronics

Category:: Audio Amplifiers

Package:: 27-Flexiwatt, Formed Leads

Datasheet:: TDA75616LV-48X.pdf

Description:: IC AMP QUAD 45W 27FLEXIWATT

Quantity:: RFQ Add To RFQ list

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Inventory:1,759

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Product details

Overview

TDA75616LV-48X from STMicroelectronics is a quad-channel Class-AB automotive audio power amplifier in Flexiwatt27 (vertical) package, delivering up to 4 × 45 W into 4 Ω at 14.4 V with 10% THD, featuring full I²C diagnostics, speaker safety routine (SSR), and operation down to 6 V for start-stop systems. It integrates four independent short-circuit protections, DC offset detection, and selectable 26 dB / 16 dB gain for line-output noise optimization.

For engineers reviewing the TDA75616LV-48X datasheet, TDA75616LV-48X pinout, TDA75616LV-48X application, or TDA75616LV-48X equivalent, key selection criteria include low-voltage start-stop compatibility (6–18 V), I²C-based per-channel fault reporting (open/short load, DC offset), SSR-enabled speaker protection, and thermal warning thresholds at 125 °C, 140 °C, and 155 °C.

Technical Context

The device implements a BCD-based MOSFET/DMOS output stage with linear thermal foldback and fast muting on overtemperature. Its diagnostics architecture executes turn-on pulse-based load verification (subsonic current injection) followed by permanent AC/DC monitoring via dedicated I²C registers.

I²C control supports independent front/rear soft mute/play, gain switching, clipping threshold selection (1%/2% or 5%/10%), and real-time readout of channel-specific faults-including open load (>85 Ω), shorted load (<0.5 Ω), and DC offset (>±2 V). SVR exceeds 70 dB (100 Hz–10 kHz) with active suppression during battery transients.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Power	4 × 45 W max into 4 Ω @ 14.4 V, 10% THD - enables high-fidelity rear/surround amplification without external heatsink oversizing
Supply Voltage Range	6–18 V - supports engine cranking (6 V) and cold-cranking transients (up to 18 V), compliant with OEM start-stop requirements
THD+N	0.015% typ. @ 1–10 W, 1 kHz - ensures low-noise cabin audio reproduction with minimal harmonic distortion
I²C Diagnostics	Per-channel DC/AC fault reporting (short-to-GND/Vs, open load, clipping) - eliminates need for external sense resistors or microcontroller polling overhead
Speaker Safety Routine (SSR)	Automated DC offset detection and shutdown if >±2 V at output - prevents speaker burnout from amplifier latch-up or failed coupling capacitors
Thermal Warnings	Three programmable junction temperature thresholds (125 °C / 140 °C / 155 °C) - enables staged thermal management (warning → mute → shutdown)
SVR	70 dB typ. (100 Hz–10 kHz) - maintains stable audio output during battery voltage dips/spikes common in vehicle electrical systems

Pinout & Package

Package: Flexiwatt27 (vertical), thermally enhanced metal-tab package with 27 leads; designed for direct PCB mounting and heatsink interface via exposed tab (Pin 1).

Pin/Terminal	Circuit Role	Design Meaning
STBY (Pin 2)	Standby/mute control input	Three-state logic: <1.2 V = standby, 2.9–3.5 V = mute, >4.5 V = operating - enables hardware-controlled power sequencing
OUT1+/OUT1− to OUT4+/OUT4− (Pins 4,6,8,10,18,20,22,24)	Differential speaker outputs	Four fully independent bridge-tied-load (BTL) channels - supports 2 Ω driving capability (64 W max) and dual-zone audio routing
CD (Pin 5)	Clipping detector output	Open-drain flag with selectable 1%/2% or 5%/10% THD threshold - feeds analog volume control or DSP limiter circuits
SVR (Pin 11)	Supply voltage rejection compensation	Internal node for optimizing PSRR against battery ripple - requires 10 μF ceramic capacitor to ground for ITU-R ARM pop suppression
CK/DATA/ADSEL (Pins 23,26,27)	I²C bus interface	Standard-mode (≤400 kHz) I²C with address selection (ADSEL) and disable (I2CDIS) - allows daisy-chaining multiple TDA75616LV devices on shared bus

Key Features

Feature	Design Value
Full I²C diagnostics	Real-time per-channel status reporting (open/short load, DC offset, clipping, thermal warnings) - reduces system-level diagnostic firmware complexity
Speaker Safety Routine (SSR)	Automatic DC offset measurement at startup and runtime with forced shutdown if >±2 V - prevents irreversible voice-coil damage
Start-stop compatible operation	Stable function down to 6 V supply - meets ISO 16750-2 crank profile for engine restart without audio dropout
Selectable gain modes	26 dB (low-noise line-out) or 16 dB (high-power speaker drive) - optimizes SNR vs. headroom trade-off per signal path
Robust misconnection tolerance	Withstands reverse battery, output short-to-rail, and floating speaker leads - eliminates need for external protection fuses or diodes

Applications

Infotainment Head Unit Amplifier

Front/Rear Zone Audio Distribution

Use Scenario: Integrated 4-channel amplifier inside OEM car radio head unit powering front door and rear parcel shelf speakers.

IC Role / Device Role / Timing Role: Primary audio power stage with I²C-configurable gain, mute timing, and per-speaker fault logging.

Use Value: Eliminates discrete op-amp + driver stages; SSR prevents warranty claims from speaker failure due to assembly defects or aging electrolytics.

Use Scenario: Dual-zone audio system where front channels drive tweeters/midranges and rear channels feed subwoofers via passive crossovers.

IC Role / Device Role / Timing Role: Independent channel control enables zone-specific mute/play and gain adjustment via I²C commands.

Use Value: Enables seamless fade/balance control and dynamic bass boost without additional DSP resources or external switches.

Start-Stop Optimized Cabin Audio

Compact Aftermarket Amplifier Module

Use Scenario: Audio system in hybrid/electric vehicles requiring uninterrupted playback during 6 V battery cranking events.

IC Role / Device Role / Timing Role: Low-voltage operational margin (6 V min) and fast thermal foldback maintain audio continuity during engine restart.

Use Value: Meets OEM Tier-1 requirements for <50 ms audio interruption during start-stop cycles - no audible dropouts or pops.

Use Scenario: Small-form-factor aftermarket amplifier board for retrofit installations in compact dash spaces.

IC Role / Device Role / Timing Role: Single-chip solution replacing multi-IC designs, reducing PCB area and BOM count while retaining diagnostics.

Use Value: Flexiwatt27 vertical footprint minimizes board height; integrated diagnostics reduce need for external test points or debug headers.

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
TDA75615LV	Same pinout and feature set but rated for 4 × 35 W max (vs. 45 W); lower thermal dissipation limit (70 W vs. 85 W)	Suitable for cost-sensitive entry-level head units with reduced thermal budget and lower peak SPL requirements	Select when system power demand stays ≤35 W/channel and heatsink mass is constrained.
MAX9768A	I²C-compatible but lacks SSR, turn-on diagnostics, and 2 Ω driving; THD higher (0.05% typ.) and SVR lower (55 dB)	Targeted at non-OEM infotainment with simpler fault handling and no start-stop compliance requirement	Choose only if diagnostics depth and low-voltage robustness are secondary to ultra-low quiescent current (25 μA vs. 5 μA standby).

Compared with TDA75616LV-48X, TDA75615LV trades peak power and thermal headroom for lower cost, while MAX9768A sacrifices diagnostic completeness and start-stop resilience to achieve smaller package size and lower static current - neither matches the integrated SSR + I²C + 6 V operation triad.

Availability

TDA75616LV-48X is available at Aetrix Electronics and suitable for automotive infotainment head units, start-stop compatible cabin audio systems, and compact aftermarket amplifier modules requiring stable component supply, long-lifecycle support, and traceable sourcing.

Supply support for TDA75616LV-48X 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 TDA75616LV belongs to ST's automotive audio power amplifier product line, engineered specifically for OEM infotainment systems demanding high reliability, comprehensive diagnostics, and compliance with stringent vehicle battery transient profiles.

FAQ

What is the minimum supply voltage required for functional operation?

The TDA75616LV-48X operates continuously down to 6 V, enabling uninterrupted audio playback during engine cranking and start-stop cycles. At 6 V, it delivers up to 5 W per channel into 4 Ω with 10% THD. Below 6 V, internal undervoltage lockout disables the output stage to prevent unstable bias conditions.

How does the Speaker Safety Routine (SSR) detect dangerous DC offset?

SSR measures DC voltage at each output pair (e.g., OUT1+ and OUT1−) during power-up and normal operation. If the differential offset exceeds ±2 V, the amplifier forces mute and reports the fault via I²C register DB1[7]. This prevents sustained DC current through speakers that could overheat voice coils.

Can the TDA75616LV-48X drive 2 Ω loads safely?

Yes - it supports 2 Ω loads with up to 64 W peak power per channel. Internal current limiting activates at 6 A (repetitive) or 8 A (non-repetitive), and thermal foldback begins at 125 °C junction temperature. Stable 2 Ω operation requires adequate heatsinking (R_{th j-case} ≤ 1 °C/W) and proper PCB copper pour.

What I²C address configuration options are supported?

The ADSEL pin (Pin 27) sets the 7-bit I²C slave address: logic low = 0x4A, logic high = 0x4B. The I2CDIS function (also on Pin 27, active low) disables I²C communication entirely, reverting to hardware-only STBY/PWGND control. Address selection enables two devices on the same bus without conflict.

TDA75616LV-48X Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 27-Flexiwatt, Formed Leads

Packaging:: Tube

Product Status:: Active

Type:: -

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)

TDA75616LV-48X FAQ

1.How can I place an order for TDA75616LV-48X through Aetrix?

Please submit a Request for Quotation (RFQ) for TDA75616LV-48X 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 TDA75616LV-48X reliable?

The price and inventory of TDA75616LV-48X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA75616LV-48X is usually 5 days.

3.What payment methods are accepted for TDA75616LV-48X?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA75616LV-48X transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TDA75616LV-48X?

TDA75616LV-48X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TDA75616LV-48X 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 TDA75616LV-48X?

For technical support, including TDA75616LV-48X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA75616LV-48X requirements.

6.How does Aetrix verify that TDA75616LV-48X is sourced from the original manufacturer or authorized distributors?

All TDA75616LV-48X 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 TDA75616LV-48X meets industry standards.

7.What is the process for return or replacement of TDA75616LV-48X?

All TDA75616LV-48X units undergo pre-shipment inspection (PSI). If there is an issue with TDA75616LV-48X, 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 TDA75616LV-48X part is unused and in its original packaging.

Return procedure for TDA75616LV-48X:

1.Submit a request within 90 days.

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

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