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

STMicroelectronics TDA7376PDTR

Name: TDA7376PDTR
Brand: STMicroelectronics
SKU: TDA7376PDTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TDA7376PDTR

Manufacturer:: STMicroelectronics

Category:: Audio Amplifiers

Package:: PowerSO-36 Exposed Top Pad

Datasheet:: TDA7376PDTR.pdf

Description:: IC AMP AB STEREO 40W POWERSO-36

Quantity:: RFQ Add To RFQ list

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Inventory:2,022

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Product details

Overview

TDA7376PDTR from STMicroelectronics is a dual-channel bridge-tied-load (BTL) audio power amplifier in PowerSO36 package, designed for automotive radio and booster applications. It delivers 2 × 35 W into 4 Ω at 14.4 V/1 kHz/10% THD (EIAJ), supports 2 Ω loads, features differential inputs, internally fixed 26 dB gain, and integrated clipping detection with programmable THD threshold.

For engineers reviewing the TDA7376PDTR datasheet, TDA7376PDTR pinout, TDA7376PDTR application, or TDA7376PDTR equivalent, key selection considerations include rail-to-rail output swing without bootstrap capacitors, CMOS-compatible mute/standby control, soft thermal limiting, load-dump protection, and open-ground fault immunity in 12 V automotive supply environments.

Technical Context

The device uses a fully complementary PNP/NPN output stage enabling true rail-to-rail voltage swing and eliminating external bootstrap components. Its differential input pairs accept both single-ended and differential signals, delivering ≥60 dB common-mode rejection ratio and ≥80 dB crosstalk suppression at 1 kHz.

On-chip protections include short-circuit detection (out-to-ground, out-to-supply, across-load), junction temperature monitoring with soft thermal limiter, loudspeaker DC current blocking, and ESD tolerance per IEC 61000-4-2. The programmable distortion detector provides open-collector output (DDOUT) sinking ≥1 mA when THD exceeds user-set threshold via THDSET pin voltage divider.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Power	2 × 35 W @ 4 Ω, 14.4 V, 1 kHz, 10% THD (EIAJ compliant)
Supply Voltage Range	8–18 V DC - compatible with automotive battery transients up to 50 V peak (50 ms)
Gain	26 dB fixed - eliminates external feedback network and gain-setting resistors
THD+N	0.03% typ. @ 1 W, 4 Ω - enables high-fidelity audio reproduction in compact car radios
Channel Separation	≥70 dB @ 10 kHz - prevents audible crosstalk between left/right audio paths
Thermal Resistance	2 °C/W (junction-to-case) - enables high-power operation with minimal heatsink mass
Standby Attenuation	90 dB @ 1 W reference - suppresses pop noise during ignition-on/off transitions

Pinout & Package

Package: PowerSO36 (slug-up), thermally enhanced exposed die pad for direct PCB heatsinking. Dimensions: 15.9 × 14.5 × 3.4 mm (L × W × H), 36-pin surface-mount with integrated thermal slug on underside.

Pin/Terminal	Circuit Role	Design Meaning
OUT1+, OUT1− OUT2+, OUT2−	Dual BTL output terminals	Drive 2 Ω–4 Ω speakers directly; no external coupling capacitors required
IN1+, IN1− IN2+, IN2−	Differential audio inputs	Accept balanced/unbalanced sources; reject common-mode noise from vehicle harness
VCC (pins 9,10,27,28,29,30)	Main power supply	Multiple parallel pins reduce IR drop and improve transient response under load dump
PWGND (pins 3,4,12,13,23,24,31,32,33,34,35,36)	Power ground	12 dedicated low-inductance GND pins minimize ground bounce and thermal resistance
MUTE (pin 6)	CMOS-compatible mute control	Active-high logic; attenuates output by ≥85 dB without audible pop
ST-BY (pin 5)	CMOS-compatible standby control	De-biases amplifiers; reduces quiescent current to ≤20 µA for ignition-off power savings
THDSET (pin 11)	Clipping detector threshold setting	Voltage divider sets THD limit (3.5–10%); triggers DDOUT (pin 10) sink current ≥1 mA
CD-OUT / DDOUT (pin 10)	Open-collector distortion indicator	Sinks current when output clips; drives external LED or microcontroller interrupt
TAB (pin 1)	Exposed thermal slug	Must be soldered to large copper pour for thermal conduction; electrically connected to PWGND

Key Features

Feature	Design Value
Rail-to-rail output swing	Eliminates need for bootstrap capacitors, reducing BOM count and PCB area in space-constrained head units
Automute at low supply	Activates mute when VCC drops below 8 V - prevents distortion during cranking or brownout
No-audible-pop switching	Internal sequencing ensures zero-crossing mute/standby transitions - critical for OEM audio quality audits
Integrated short-circuit protection	Covers out-to-ground, out-to-VCC, and cross-load faults - eliminates need for external fusing in production designs
Load-dump survival	Withstands 50 V/50 ms transients per ISO 7637-2 - meets automotive system-level surge requirements without external TVS

Applications

Car Radio Audio Amplifier

Aftermarket Head Unit Booster

Use Scenario: Integrated stereo amplifier in OEM dashboard-mounted infotainment systems with 4 Ω speaker loads and 12 V battery supply.

IC Role / Device Role / Timing Role: Final-stage BTL audio driver delivering full-range signal to front/rear speakers; handles EMI-rich cabin environment.

Use Value: 35 W/channel output enables loudness compliance for EU R10 and UNECE Regulation 10 without external heatsinks.

Use Scenario: Compact add-on amplifier module for aftermarket stereos upgrading factory speakers in compact vehicles.

IC Role / Device Role / Timing Role: Dual-channel power stage accepting preamp-level line-in signals; operates from vehicle battery with load-dump immunity.

Use Value: Differential inputs reject alternator whine; 2 Ω capability supports high-sensitivity component speakers.

Compact Car Audio Subwoofer Driver

Commercial Vehicle Entertainment System

Use Scenario: Low-profile subwoofer amplifier in SUV cargo-area enclosures where thermal management is constrained.

IC Role / Device Role / Timing Role: High-current BTL channel driving 2 Ω subwoofer; thermal limiter prevents shutdown during bass transients.

Use Value: Soft thermal limiting maintains audio continuity instead of hard cutoff - avoids audible dropout during heavy bass passages.

Use Scenario: Multi-zone audio distribution in buses or coaches using centralized amplifier driving multiple speaker zones.

IC Role / Device Role / Timing Role: One TDA7376PDTR per zone (e.g., front/mid/rear); standalone mute/standby control per zone.

Use Value: CMOS-compatible controls interface directly with vehicle CAN-based body controller without level-shifting.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TDA7377	Higher output: 2 × 45 W @ 4 Ω; requires larger heatsink; same PowerSO36 footprint	Used in premium head units requiring louder acoustic output; higher quiescent current (250 mA vs. 200 mA)	Select when >35 W/channel is required and thermal margin allows increased dissipation
TPA3116D2	Class-D topology; 2 × 50 W @ 4 Ω; efficiency >90%; requires external LC filter	Preferred for battery-powered portable audio or extended runtime; generates less heat but adds filter BOM	Select when system-level efficiency >85% is mandatory and board space permits filter components

Compared with TDA7376PDTR, TDA7377 offers higher power at the cost of thermal density, while TPA3116D2 trades analog simplicity for digital efficiency-making TDA7376PDTR optimal for cost-sensitive, thermally constrained Class-AB automotive designs.

Availability

TDA7376PDTR is available at Aetrix Electronics and suitable for car radio audio amplification, aftermarket head unit boosters, compact subwoofer drivers, and commercial vehicle entertainment systems requiring stable component supply and automotive-grade reliability.

Supply support for TDA7376PDTR 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 manufacturing and qualification capabilities.

The TDA7376PDTR belongs to ST's automotive audio power amplifier product line, engineered specifically for AEC-Q100-compliant car radio and infotainment systems requiring robustness against load dump, reverse battery, and thermal stress.

FAQ

What is the maximum safe operating supply voltage for TDA7376PDTR?

The absolute maximum DC supply voltage is 28 V, and it withstands 50 V peak transients for up to 50 ms per ISO 7637-2. For continuous operation, ST specifies 8–18 V; exceeding 18 V risks accelerated thermal degradation even if within absolute max ratings.

Does TDA7376PDTR require external bootstrap capacitors?

No. Its fully complementary PNP/NPN output stage enables rail-to-rail voltage swing without bootstrap capacitors. This reduces component count, PCB area, and potential failure points in high-vibration automotive environments.

How does the automute function respond during engine cranking?

Automute activates when supply voltage falls below 8 V, suppressing output before distortion becomes audible. This occurs during engine cranking (typically 6–9 V), preventing harsh noise from reaching speakers and meeting OEM audio quality standards.

Can TDA7376PDTR drive 2 Ω speakers reliably?

Yes. It is rated for 2 × 25 W into 2 Ω at 14.4 V/1 kHz/10% THD and includes short-circuit protection covering out-to-ground, out-to-supply, and across-load faults - enabling safe operation with low-impedance high-sensitivity speakers.

TDA7376PDTR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: PowerSO-36 Exposed Top Pad

Packaging:: Tape & Reel (TR)

Product Status:: Last Time Buy

Type:: Class AB

Output Type:: 2-Channel (Stereo)

Max Output Power x Channels @ Load:: 40W x 2 @ 4Ohm

Voltage - Supply:: 8V ~ 18V

Features:: Depop, Differential Inputs, Mute, Short-Circuit and Thermal Protection, Standby

Mounting Type:: Surface Mount

Operating Temperature:: -40°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Supplier Device Package:: PowerSO-36

TDA7376PDTR FAQ

1.How can I place an order for TDA7376PDTR through Aetrix?

Please submit a Request for Quotation (RFQ) for TDA7376PDTR 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 TDA7376PDTR reliable?

The price and inventory of TDA7376PDTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA7376PDTR is usually 5 days.

3.What payment methods are accepted for TDA7376PDTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA7376PDTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TDA7376PDTR?

TDA7376PDTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TDA7376PDTR 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 TDA7376PDTR?

For technical support, including TDA7376PDTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA7376PDTR requirements.

6.How does Aetrix verify that TDA7376PDTR is sourced from the original manufacturer or authorized distributors?

All TDA7376PDTR 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 TDA7376PDTR meets industry standards.

7.What is the process for return or replacement of TDA7376PDTR?

All TDA7376PDTR units undergo pre-shipment inspection (PSI). If there is an issue with TDA7376PDTR, 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 TDA7376PDTR part is unused and in its original packaging.

Return procedure for TDA7376PDTR:

1.Submit a request within 90 days.

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

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