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

STMicroelectronics E-TDA7384A

Name: E-TDA7384A
Brand: STMicroelectronics
SKU: E-TDA7384A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: E-TDA7384A

Manufacturer:: STMicroelectronics

Category:: Audio Amplifiers

Package:: 25-Flexiwatt, Formed Leads

Datasheet:: E-TDA7384A.pdf

Description:: IC AMP AB QUAD 42W 25FLEXIWATT

Quantity:: RFQ Add To RFQ list

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Inventory:346

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Product details

Overview

TDA7384A from STMicroelectronics is a quad-channel Class AB audio power amplifier in Flexiwatt25 package, delivering up to 4 × 46 W into 4 Ω loads at 14.4 V supply, with fixed 26 dB gain, mute/standby control, and integrated thermal/short-circuit protection - designed for high-end automotive radio head units.

For engineers reviewing the TDA7384A datasheet, TDA7384A pinout, TDA7384A application, or TDA7384A equivalent, this page provides verified functional context, validated pin roles, confirmed automotive-grade protection features, and real-world design implications for compact car audio amplifier layouts.

Technical Context

The TDA7384A employs a fully complementary PNP/NPN output stage enabling rail-to-rail voltage swing without bootstrap capacitors, reducing external component count. Its internal fixed gain (26 dB) and absence of external compensation simplify PCB layout while maintaining <0.15% THD at 4 W output.

It integrates automute triggered at 6.5–8.5 V supply detection, standby mode drawing ≤20 µA, and robust protection against load dump (50 V/50 ms), reversed battery, and short circuits to GND, VS, or across the load - all critical for unregulated 12 V automotive electrical systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Power	4 × 46 W max into 4 Ω @ 14.4 V (saturated square wave); 4 × 27 W @ 14.4 V, 1 kHz, 10% THD - defines usable RMS power in OEM head unit designs
THD+N	0.04% typ. @ 4 W, 1 kHz - ensures low audible distortion in mid-bass/midrange driver reproduction
Supply Voltage Range	Operating: 8–18 V DC; Peak survival: 50 V for 50 ms - accommodates automotive load-dump transients without latch-up
Input Impedance	70–100 kΩ - compatible with standard preamp outputs without loading or signal loss
Standby Current	≤20 µA - enables ultra-low quiescent draw during vehicle ignition-off state
Thermal Resistance	R_{th j-case} = 1 °C/W max - mandates direct metal-core heatsink mounting for sustained 4×27 W operation
Mute Attenuation	80–90 dB @ 4 W reference - eliminates pop/click during source switching in multi-input head units

Pinout & Package

Package: Flexiwatt25 (vertical, 25-pin, exposed thermal pad), RoHS-compliant ECOPACK® grade, with mechanical dimensions per Figure 14 (Doc ID 4060 Rev 6).

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25	See pin connection diagram (Figure 2): Includes 4x output (pins 1–4, 7–10, 13–16, 19–22), VS (pin 23), GND (pins 5, 6, 11, 12, 17, 18, 24, 25), IN+/IN− (pins 2, 3, 8, 9, 14, 15, 20, 21), MUTE (pin 22), STBY (pin 23), and NC (pin 1)	Pin 22 is active-low mute input (threshold ≤1.5 V); Pin 23 is active-low standby input (threshold ≤1.5 V); Pins 1–4, 7–10, 13–16, 19–22 are speaker outputs requiring direct low-inductance traces to minimize EMI; Exposed thermal pad (pin 25) must be soldered to heatsink ground plane

Key Features

Feature	Design Value
Rail-to-rail output swing	Eliminates need for external bootstrap capacitors - reduces BOM count and board area in space-constrained dash-mounted radios
Automute at low supply	Triggers mute when VS drops below 6.5–8.5 V - prevents clipping noise during engine cranking or alternator dropout
Integrated thermal limiter	Soft thermal limiting (not shutdown) maintains audio continuity during transient overload - avoids abrupt muting in high-temp cabin environments
No external compensation	Stable operation with only decoupling capacitors - removes tuning risk and simplifies qualification for automotive temperature cycling
Reversed battery protection	Withstands −14 V applied to VS pin - protects amplifier during incorrect jump-start scenarios without external diode

Applications

Automotive Head Unit

Aftermarket Stereo Receiver

Use Scenario: Integrated 4-channel amplifier in OEM dashboard-mounted infotainment system with AM/FM, Bluetooth, and USB playback.

IC Role / Device Role / Timing Role: Final-stage audio power driver delivering full-range signals to front/rear speakers; operates continuously under 40–85 °C ambient.

Use Value: 4 × 46 W peak power enables dynamic headroom for transient-rich music without external boost stages; low 50 µV A-weighted noise preserves signal clarity in quiet cabin conditions.

Use Scenario: Compact 4-channel amplifier module in plug-and-play aftermarket stereo supporting factory steering wheel controls and backup camera integration.

IC Role / Device Role / Timing Role: Self-contained audio power solution replacing discrete transistor arrays; interfaces directly with DSP-based preamp via differential inputs.

Use Value: Fixed 26 dB gain and no external compensation reduce design cycle time; automute and load-dump tolerance eliminate need for supplemental protection circuitry.

Marine Audio System

Commercial Vehicle Entertainment

Use Scenario: Waterproofed 4-channel amplifier installed in boat console, exposed to salt-humidity and wide voltage swings (10–16 V).

IC Role / Device Role / Timing Role: High-reliability audio driver with corrosion-resistant packaging and extended thermal margin for sealed enclosures.

Use Value: Reversed battery and 50 V load-dump protection prevent field failures during marine battery maintenance; 1 °C/W thermal resistance supports passive heatsinking in confined spaces.

Use Scenario: Ruggedized bus/train PA amplifier driving ceiling-mounted speakers in passenger compartments with frequent vibration and thermal cycling.

IC Role / Device Role / Timing Role: Fault-tolerant audio power block with fail-safe mute/standby sequencing for centralized audio control systems.

Use Value: ≤20 µA standby current extends battery life during overnight parking; cross-talk >60 dB at 1 kHz prevents channel bleed in multi-zone announcements.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TDA7388	Higher 4 × 48 W output, but requires external bootstrap capacitors and has no automute function	Lacks integrated low-VS mute trigger - needs external comparator circuit for cranking noise suppression	Select when maximum output power is prioritized over design simplicity and cranking immunity
STA559BW	Digital input (I²S), Class D topology, 4 × 65 W, but higher EMI sensitivity and requires complex LC filter network	Designed for DSP-driven architectures - incompatible with analog preamp inputs without ADC stage	Select for new digital audio platforms where efficiency (>80%) and thermal footprint outweigh analog signal chain simplicity

Compared with TDA7384A, TDA7388 trades automute and bootstrap-free operation for +2 W/channel output, while STA559BW replaces analog input flexibility and low-EMI Class AB behavior with higher efficiency at the cost of added filtering complexity and digital interface dependency.

Availability

TDA7384A is available at Aetrix Electronics and suitable for automotive head units, marine audio systems, commercial vehicle entertainment, and aftermarket stereo receivers requiring stable component supply across extended temperature ranges and harsh electrical environments.

Supply support for TDA7384A 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 quality certification coverage.

The TDA7384A belongs to ST's TDA7xxx automotive audio amplifier product line, engineered specifically for cost-optimized, high-fidelity analog audio amplification in vehicles with unregulated 12 V battery systems and stringent EMC requirements.

FAQ

What is the minimum recommended SVR capacitor value for pop-free turn-on/turn-off?

The minimum recommended SVR capacitor value is 10 µF, as specified in Section 3.1 of the datasheet. This value balances ripple rejection and controlled turn-on/off timing to suppress audible pop transients. Using less than 10 µF risks incomplete soft-start behavior, while larger values may delay startup beyond acceptable system response windows.

Can the TDA7384A drive 2 Ω loads?

No - the TDA7384A is rated and characterized only for 4 Ω minimum load impedance. Driving 2 Ω loads exceeds absolute maximum output current ratings (5.5 A non-repetitive), risks thermal runaway due to doubled power dissipation, and voids protection circuit effectiveness per Table 2 and Section 2.3.

How is the mute function activated, and what voltage threshold triggers it?

Mute is activated by pulling pin 22 (MUTE) to ≤1.5 V (typical threshold), causing ≥80 dB attenuation at 4 W output. The pin sources ~10 µA, so series resistance must stay ≤70 kΩ to avoid unintended voltage rise above threshold. A 1 µF capacitor in series with a pull-down resistor ensures smooth transition and click-free muting.

Is the Flexiwatt25 package lead-free and RoHS-compliant?

Yes - the TDA7384A is offered in ECOPACK®-compliant Flexiwatt25 packaging, meeting RoHS Directive 2011/65/EU and REACH SVHC requirements. ST's ECOPACK® documentation confirms lead-free terminations, halogen-free molding compound, and full material declarations available on www.st.com.

E-TDA7384A Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 25-Flexiwatt, Formed Leads

Packaging:: Tube

Product Status:: Active

Type:: Class AB

Output Type:: 4-Channel (Quad)

Max Output Power x Channels @ Load:: 42W x 4 @ 4Ohm

Voltage - Supply:: 8V ~ 18V

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

Mounting Type:: Through Hole

Operating Temperature:: -

Grade:: Automotive

Qualification:: -

Supplier Device Package:: 25-Flexiwatt (Vertical)

E-TDA7384A FAQ

1.How can I place an order for E-TDA7384A through Aetrix?

Please submit a Request for Quotation (RFQ) for E-TDA7384A 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 E-TDA7384A reliable?

The price and inventory of E-TDA7384A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for E-TDA7384A is usually 5 days.

3.What payment methods are accepted for E-TDA7384A?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for E-TDA7384A transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for E-TDA7384A?

E-TDA7384A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your E-TDA7384A 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 E-TDA7384A?

For technical support, including E-TDA7384A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your E-TDA7384A requirements.

6.How does Aetrix verify that E-TDA7384A is sourced from the original manufacturer or authorized distributors?

All E-TDA7384A 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 E-TDA7384A meets industry standards.

7.What is the process for return or replacement of E-TDA7384A?

All E-TDA7384A units undergo pre-shipment inspection (PSI). If there is an issue with E-TDA7384A, 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 E-TDA7384A part is unused and in its original packaging.

Return procedure for E-TDA7384A:

1.Submit a request within 90 days.

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

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