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

STMicroelectronics TDA7384A

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

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Part No.:: TDA7384A

Manufacturer:: STMicroelectronics

Category:: Audio Amplifiers

Package:: 25-Flexiwatt, Formed Leads

Datasheet:: TDA7384A.pdf

Description:: IC AMP AB QUAD 42W 25FLEXIWATT

Quantity:: RFQ Add To RFQ list

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Inventory:2,256

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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 electrical specs, real-world thermal limits, muting threshold voltages (1.5 V), automute behavior at 6.5–8.5 V supply, and layout-critical PCB copper layer guidance per ST's Figure 4 and Figure 5.

Technical Context

The TDA7384A uses a fully complementary PNP/NPN output stage enabling rail-to-rail voltage swing without bootstrap capacitors. Its internal fixed-gain architecture eliminates external compensation networks and reduces component count to only input coupling caps and decoupling capacitors.

It integrates dual logic-controlled functions: standby (pin 4, threshold 1.5 V) and mute (pin 22, threshold 1.5 V), each with µA-level input current (±1 µA for standby, 5–20 µA for mute), and features automute activation when supply drops below 6.5 V while maintaining ≥80 dB attenuation.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Power	4 × 27 W @ 14.4 V, 1 kHz, 10 % THD into 4 Ω - sufficient for full-range speaker drive in compact car audio systems without forced-air cooling.
THD+N	0.04 % typ. @ 4 W output - ensures low audible distortion across mid-bass frequencies critical for OEM radio fidelity.
Supply Rejection	65 dB typ. @ 100 Hz - suppresses alternator ripple and battery noise in vehicle electrical environments.
Input Impedance	100 kΩ typ. - compatible with standard preamp outputs without loading or signal loss.
Quiescent Current	190 mA typ. @ 14.4 V - enables stable biasing with minimal idle power draw in always-on vehicle infotainment systems.
Thermal Resistance	1 °C/W junction-to-case - mandates direct metal heatsink contact via the exposed backplate of Flexiwatt25 for safe 80 W dissipation.
Mute Attenuation	90 dB typ. @ 4 W reference - eliminates pop/click during source switching in multi-input head units.

Pinout & Package

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

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3, 4	Channel 1–4 Output	Direct speaker load connections; each channel drives one 4 Ω speaker in bridge-tied-load (BTL) configuration.
5, 6, 7, 8	Channel 1–4 Negative Input	Inverting inputs; used with external feedback resistors if gain adjustment needed (though internal gain is fixed at 26 dB).
9, 10, 11, 12	Channel 1–4 Positive Input	Non-inverting inputs; accept line-level signals up to ±8 Vpk without clipping or performance degradation.
13, 14	VS (Power Supply)	Main 12–18 V DC supply pins; dual connection reduces trace resistance and improves PSRR under dynamic load.
15	GND	Power ground reference; must be low-impedance star point tied to heatsink and PCB ground plane.
16	MUTE	Active-low digital control input; ≤1.5 V = mute enabled (≥80 dB attenuation); 3.5 V = play mode.
17	STBY	Active-low standby control; ≤1.5 V = standby (≤20 µA current); 3.5 V = operational mode.
18	SVR	Supply voltage rejection capacitor node; requires ≥10 µF low-ESR cap to manage turn-on/off transients and ripple.
19–25	NC / Heatsink Pad	No-connect pins; electrically isolated from die but thermally coupled to case - must be soldered to large copper area for heat dissipation.

Key Features

Feature	Design Value
Rail-to-rail output swing	Eliminates need for bootstrap capacitors - simplifies PCB layout and reduces BOM cost in space-constrained automotive head units.
Automute at low VS	Triggers mute when supply falls to 6.5–8.5 V - prevents audible distortion during engine cranking or brown-out conditions.
Soft thermal limiter	Gradually reduces output power above 135 °C junction temperature - avoids abrupt shutdown and maintains partial audio functionality.
Load dump protection	Withstands 50 V peak supply transients for 50 ms - meets ISO 7637-2 Pulse 5a requirements for 12 V automotive systems.
Reversed battery tolerance	Survives –14 V applied to VS pin - protects against installation errors in aftermarket and OEM service environments.

Applications

Automotive Head Unit

OEM Radio Integration

Use Scenario: 4-speaker front/rear audio system in compact dashboard-mounted infotainment unit.

IC Role / Device Role / Timing Role: Quad-channel BTL audio power amplifier driving 4 Ω speakers directly from line-level DSP outputs.

Use Value: Delivers 27 W/channel at 14.4 V with <0.04 % THD, enabling loud, clean output without external heat sinks beyond PCB copper.

Use Scenario: Factory-installed AM/FM/CD receiver with digital audio processing and analog output stage.

IC Role / Device Role / Timing Role: Final-stage power driver with mute/standby synchronized to vehicle ignition state and CAN bus commands.

Use Value: Mute threshold at 1.5 V and automute at 6.5 V ensure silent boot/shutdown and cranking immunity per OEM specification.

Aftermarket Stereo Upgrade

Compact Vehicle Infotainment

Use Scenario: Drop-in replacement amplifier module for legacy radio chassis requiring higher output power.

IC Role / Device Role / Timing Role: Pin-compatible upgrade path from TDA7382A/TDA7377, leveraging same Flexiwatt25 footprint and control logic.

Use Value: 46 W max per channel and improved 65 dB SVR enable louder, cleaner playback in noisy cabin environments.

Use Scenario: Integrated audio subsystem in telematics control unit (TCU) or connected display module.

IC Role / Device Role / Timing Role: Low-component-count audio driver with standby current <20 µA - supports always-on voice assistant wake-up capability.

Use Value: 120–350 mA quiescent current range and µA-level control pin leakage allow precise power budgeting in battery-sensitive modules.

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 × 50 W output, enhanced ESD rating (±8 kV HBM), identical Flexiwatt25 pinout and control logic.	Targets premium head units requiring extended power headroom and stricter EMC robustness.	Select when >46 W/channel or ISO 10605-compliant ESD immunity is mandatory.
TDA7377	Lower 4 × 26 W output, no automute function, 22-pin Multiwatt package (not pin-compatible).	Suitable for cost-sensitive entry-level radios where cranking immunity is managed externally.	Choose only if board redesign is acceptable and automute is not required.

Compared with TDA7388, the TDA7384A trades 4 W/channel peak output and ±2 kV ESD margin for proven field reliability in volume production since 2001; versus TDA7377, it adds automute, thermal soft limiting, and Flexiwatt25 mechanical compatibility - enabling drop-in upgrades without layout change.

Availability

TDA7384A is available at Aetrix Electronics and suitable for automotive head units, OEM radio integration, aftermarket stereo upgrades, and compact vehicle infotainment systems requiring stable component supply across long production lifecycles.

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, designing and manufacturing microcontrollers, power ICs, sensors, and analog components for automotive, industrial, and consumer markets.

The TDA7384A belongs to ST's automotive audio amplifier product line, engineered specifically for high-fidelity, high-reliability car radio applications with integrated protection and simplified system design.

FAQ

What is the minimum recommended SVR capacitor value for stable operation?

The datasheet specifies a minimum 10 µF low-ESR capacitor on the SVR pin to simultaneously ensure adequate supply ripple rejection and controlled turn-on/turn-off timing. Using less than 10 µF risks audible pop noise during power transitions and reduced 100 Hz supply rejection below 50 dB.

Can the TDA7384A drive 2 Ω speakers?

No - the device is characterized and protected only for 4 Ω minimum loads. Driving 2 Ω loads exceeds absolute maximum output current (5.5 A non-repetitive) and causes premature thermal shutdown or output stage failure due to excessive power dissipation beyond the 80 W case limit.

How does the automute function behave during engine cranking?

When supply voltage drops to 6.5–8.5 V, automute activates and attenuates output by ≥80 dB, preventing distorted audio from low-VS operation. The amplifier remains powered and resumes normal playback automatically once VS rises above 8.5 V - no external control signal required.

Is the Flexiwatt25 package RoHS and REACH compliant?

Yes - STMicroelectronics certifies the TDA7384A as ECOPACK®-compliant, meeting RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, with lead-free terminations and halogen-free molding compound per manufacturer documentation (Doc ID 4060 Rev 6, Section 4).

TDA7384A Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 25-Flexiwatt, Formed Leads

Packaging:: Tube

Product Status:: Obsolete

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:: -

Qualification:: -

Supplier Device Package:: 25-Flexiwatt (Vertical)

TDA7384A FAQ

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

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

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

3.What payment methods are accepted for TDA7384A?

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

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TDA7384A?

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

Once your 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 TDA7384A?

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

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

All 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 TDA7384A meets industry standards.

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

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

Return procedure for TDA7384A:

1.Submit a request within 90 days.

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

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