About us Contact Us Submit BOM
RFQs(0)
English
Close Menu
View All

Please refer to the English Version as our Official Version.Return

Europe
France(Français) Germany(Deutsch) Italy(Italia) Russian(русский) Poland(polski) Czech(Čeština) Luxembourg(Lëtzebuergesch) Netherlands(Nederland) Iceland(íslenska) Hungarian(Magyarország) Spain(español) Portugal(Português) Turkey(Türk dili) Bulgaria(Български език) Ukraine(Україна) Greece(Ελλάδα) Israel(עִבְרִית) Sweden(Svenska) Finland(Svenska) Finland(Suomi) Romania(românesc) Moldova(românesc) Slovakia(Slovenská) Denmark(Dansk) Slovenia(Slovenija) Slovenia(Hrvatska) Croatia(Hrvatska) Serbia(Hrvatska) Montenegro(Hrvatska) Bosnia and Herzegovina(Hrvatska) Lithuania(lietuvių) Spain(Português) Switzerland(Deutsch) United Kingdom(English)
Asia/Pacific
Japan(日本語) Korea(한국의) Thailand(ภาษาไทย) Malaysia(Melayu) Singapore(Melayu) Vietnam(Tiếng Việt) Philippines(Pilipino)
Africa, India and Middle East
United Arab Emirates(العربية) Iran(فارسی) Tajikistan(فارسی) India(हिंदी) Madagascar(malaɡasʲ)
South America / Oceania
New Zealand(Maori) Brazil(Português) Angola(Português) Mozambique(Português)
North America
United States(English) Canada(English) Haiti(Ayiti) Mexico(español)
HomeProductsIntegrated Circuits (ICs)Linear - Amplifiers - AudioTDA7491MV13TR
TDA7491MV13TR Image
TDA7491MV13TR Image - 1
Image may be representation.
See specifications for product details.
Share
 Favorite
EXPRESS OPTION
Payment method

TDA7491MV13TR - STMicroelectronics

Manufacturer Part Number
TDA7491MV13TR
Manufacturer
STMicroelectronics
Allelco Part Number
32D-TDA7491MV13TR
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
16,122 pcs available, New & Original
Parts Description
IC AMP D MONO 25W POWERSSO36
Package
PowerSSO-36
Data sheet
TDA7491MV13TR.pdf

Datasheets

TDA7491MV.pdf
RoHs Status
ROHS3 Compliant
Compare
Our certification
In stock: 16122
  • Unit Price: $4.409
  • Subtotal: $0.00

Want a better price?
Add to Cart and Submit RFQ now, we'll contact you immediately.

Quantity Unit Price Ext. Price
1+ $4.409 $4.41
10+ $3.931 $39.31
30+ $3.64 $109.20
100+ $3.395 $339.50
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

TDA7491MV13TR Tech Specifications
STMicroelectronics - TDA7491MV13TR technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics - TDA7491MV13TR

Product Attribute Attribute Value
Manufacturer STMicroelectronics
Voltage - Supply 5V ~ 18V
Type Class D
Supplier Device Package PowerSSO-36
Series -
Package / Case 36-PowerBFSOP (0.295", 7.50mm Width)
Package Tape & Reel (TR)
Product Attribute Attribute Value
Output Type 1-Channel (Mono)
Operating Temperature -40°C ~ 85°C (TA)
Mounting Type Surface Mount
Max Output Power x Channels @ Load 25W x 1 @ 6Ohm
Features Depop, Differential Inputs, Mute, Short-Circuit and Thermal Protection, Standby
Base Product Number TDA7491

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 3 (168 Hours)
REACH Status REACH Unaffected
ECCN EAR99

Parts Introduction

TDA7491MV13TR Image
TDA7491MV13TR (1)

Manufacturer Part Number

TDA7491MV13TR

Manufacturer

STMicroelectronics

Introduction

The TDA7491MV13TR is a high-performance, single-channel Class D audio power amplifier from STMicroelectronics.

Product Features and Performance

Operates on a supply voltage from 5V to 18V

Delivers up to 25W of output power into a 6Ω load

Features differential inputs, mute function, and protection against short-circuit and thermal overload

Employs advanced Class D amplification technology for high efficiency

Product Advantages

High-power output in a compact package

Robust protection features for reliable operation

Wide operating voltage range for flexibility in system design

Efficient Class D architecture for low power consumption

Key Technical Parameters

Output Power: 25W x 1 @ 6Ω load

Supply Voltage: 5V to 18V

Operating Temperature: -40°C to 85°C

Package: 36-PowerBFSOP (0.295", 7.50mm Width)

Quality and Safety Features

RoHS3 compliant

Short-circuit and thermal protection

Mute function for safe operation

Compatibility

The TDA7491MV13TR is a single-channel Class D audio power amplifier suitable for a wide range of audio applications.

Application Areas

Portable audio devices

Home theater systems

Professional audio equipment

Automotive infotainment systems

Product Lifecycle

The TDA7491MV13TR is an actively supported product from STMicroelectronics. Replacement or upgrade options may be available for future product needs.

Key Reasons to Choose This Product

High-power output in a compact package

Robust protection features for reliable operation

Wide operating voltage range for flexibility in system design

Efficient Class D architecture for low power consumption

RoHS3 compliance for environmental responsibility

Frequently Asked Questions(FAQ)

What are the key thermal and electrical limitations of the TDA7491MV13TR when driving a 6-ohm load in continuous operation, and how do these constraints affect system-level design?
The TDA7491MV13TR delivers up to 25W into a 6-ohm load with a supply voltage between 5V and 18V. At this power level and impedance, internal power dissipation can reach several watts under sustained full-load conditions, necessitating careful evaluation of PCB thermal management, heatsinking, and airflow. The device includes thermal shutdown protection above 150°C junction temperature, but prolonged operation near maximum output may trigger throttling or shutdown if heat is not adequately dissipated. Designers must ensure ambient operating temperatures remain within -40°C to 85°C while accounting for self-heating effects during real-world use.
How does the TDA7491MV13TR compare to other Class D amplifiers like the TDA7492 or LM46002-based solutions in terms of efficiency, footprint, and integration features for compact audio applications?
While the TDA7491MV13TR offers moderate efficiency (~85–90%) typical of Class D topologies at 25W into 6 ohms, newer devices such as the TDA7492 provide higher output power (up to 50W) and improved EMI performance. In contrast, switching regulators like the LM46002 serve different functions entirely—they are DC-DC converters, not audio amplifiers—and cannot be directly compared. The TDA7491’s PowerSSO-36 EPD package supports space-constrained designs due to its small outline, though it requires more external components than fully integrated modules. Its differential inputs and depop circuitry make it suitable for balanced signal paths, whereas many modern ICs favor single-ended designs with digital control interfaces.
What precautions should be taken when using the TDA7491MV13TR with capacitive loads exceeding 10µF, and how might this impact stability and transient response?
The TDA7491MV13TR may become unstable when driving capacitive loads greater than approximately 10µF without additional compensation. This instability can manifest as oscillations or excessive ringing in the step response. To mitigate this, designers often include a small series resistor (e.g., 1–10 ohms) at the output or use a damping network. Alternatively, limiting output slew rate through feedback adjustments or selecting an IC with built-in capacitive load drive capability improves reliability. Such measures are critical in applications where speaker impedance drops significantly at high frequencies or where long cable runs introduce parasitic capacitance.
Can the TDA7491MV13TR operate reliably in automotive environments where input voltage transients up to 40V are possible, despite its nominal 5V–18V supply range?
No, the TDA7491MV13TR is specified only for supply voltages between 5V and 18V. Exposure to transients beyond this range—such as those common in automotive systems—may damage the device. Although it includes internal protection diodes, they are not rated for sustained overvoltage conditions. For automotive applications, a pre-regulator or transient-voltage-suppression (TVS) diode stage is recommended to clamp input spikes before reaching the amplifier. Additionally, derating the supply margin and verifying compliance with ISO 7637 pulse standards enhances robustness in harsh environments.
What role does the depop circuit play in the TDA7491MV13TR, and why is it important in battery-powered audio systems?
The depop circuit eliminates audible "thump" or pop sounds typically heard during power-up and power-down transitions by gradually ramping the output voltage instead of enabling it abruptly. This feature minimizes current surges that could stress batteries or cause electromagnetic interference. In battery-powered systems—such as portable speakers or mobile devices—the depop mechanism also reduces inrush currents, extending battery life and protecting downstream components from voltage glitches during state changes.
Is it feasible to parallel two TDA7491MV13TR devices to increase total output power, and what challenges would this approach present?
Direct paralleling of TDA7491MV13TR units is generally not recommended due to potential mismatch in gain, bias, and thermal characteristics, which can lead to uneven current sharing and localized overheating. Without precise matching and active current balancing, one device may carry disproportionate load while another remains underutilized. Furthermore, the lack of built-in inter-chip synchronization complicates timing alignment in PWM stages. Alternative approaches include using a single higher-power Class D IC or implementing discrete MOSFET-based push-pull configurations with external drivers and control logic.
How sensitive is the TDA7491MV13TR to layout parasitics in high-current audio designs, and what layout guidelines ensure stable performance?
The TDA7491MV13TR is moderately sensitive to layout parasitics due to its high-current switching nature. Key considerations include minimizing trace inductance in power delivery paths, placing bypass capacitors as close as possible to the VDD and GND pins, and using wide ground planes to reduce loop inductance. High-impedance signal traces should avoid routing near noisy power lines. A four-layer PCB with dedicated power and ground layers improves decoupling and reduces radiated emissions. Poor layout can result in reduced efficiency, increased EMI, and even oscillation in borderline-stable configurations.
What is the significance of the MSL 3 classification for the TDA7491MV13TR, and how should it influence handling and storage procedures during manufacturing?
The Moisture Sensitivity Level (MSL) 3 designation indicates that the TDA7491MV13TR can withstand exposure to ambient humidity for up to 168 hours before requiring dry packing or baking. After opening the moisture-barrier bag, components must be used within this window to prevent solder joint defects during reflow. Manufacturers should follow J-STD-033 guidelines, including storing unpackaged parts in dry cabinets and monitoring time-to-use. Failure to adhere to MSL protocols increases risk of popcorning during thermal cycling, especially in lead-free soldering processes.
How does the TDA7491MV13TR handle short-circuit conditions, and what recovery behavior should engineers expect after fault removal?
Upon detecting a short-circuit condition, the TDA7491MV13TR automatically shuts down its output and enters a safe mode to protect internal transistors. Once the fault is removed and the IC cools below the thermal trip threshold, it resumes normal operation without manual intervention—provided the quiescent current and temperature have returned to safe levels. Engineers should verify that the recovery occurs within milliseconds to avoid unintended system resets. Monitoring output current via sense resistors or using diagnostic feedback can further enhance fault resilience in safety-critical designs.
What advantages does the PowerSSO-36 EPD package offer over traditional SOIC packages for the TDA7491MV13TR in space-constrained consumer electronics?
The PowerSSO-36 EPD package provides a 7.5mm width footprint with 36 leads, offering higher pin density and better thermal conductivity than standard SOIC variants. Its exposed die pad (EPD) allows direct attachment to a copper plane for improved heat dissipation, reducing reliance on additional heatsinks. This makes it ideal for compact audio enclosures where board area and thermal budget are limited. The package also supports automated assembly processes compatible with standard pick-and-place equipment, streamlining production for high-volume applications like smart speakers or wearable audio devices.
Can the TDA7491MV13TR be used with single-ended input signals, and what modifications are needed to interface it properly?
Yes, the TDA7491MV13TR accepts single-ended inputs by connecting one side of the differential input pair to a fixed reference—typically analog ground—while applying the input signal to the non-inverting or inverting pin depending on desired polarity inversion. However, this configuration reduces common-mode rejection and may increase susceptibility to noise unless proper filtering is applied. Designers should ensure input coupling capacitors are sized appropriately for low-frequency cutoff requirements and that DC bias levels align with the IC’s internal circuitry to avoid biasing errors.
Can the TDA7491MV13TR be used with single-ended input signals, and what modifications are needed to interface it properly?
Yes, the TDA7491MV13TR accepts single-ended inputs by connecting one side of the differential input pair to a fixed reference—typically analog ground—while applying the input signal to the non-inverting or inverting pin depending on desired polarity inversion. However, this configuration reduces common-mode rejection and may increase susceptibility to noise unless proper filtering is applied. Designers should ensure input coupling capacitors are sized appropriately for low-frequency cutoff requirements and that DC bias levels align with the IC’s internal circuitry to avoid biasing errors.
How does standby mode functionality in the TDA7491MV13TR affect power consumption in battery-operated applications, and what triggers entry into this state?
In standby mode, the TDA7491MV13TR reduces quiescent current to less than 1mA, significantly lowering idle power draw compared to full operational states (which may consume several hundred milliamps). Entry into standby occurs when the STDBY pin is pulled low or held in a defined inactive state. This feature enables energy-efficient operation in systems with sleep/wake cycles, such as voice-activated speakers or remote controls. Proper pull-up/pull-down resistor selection on the STDBY line ensures reliable state transitions without false triggering from noise or leakage currents.
What impact does operating temperature have on output distortion and reliability when using the TDA7491MV13TR near its upper limit of 85°C?
As ambient temperature approaches 85°C, the TDA7491MV13TR experiences increased internal resistance and reduced headroom for output swing, leading to higher total harmonic distortion (THD), particularly at high frequencies and peak output levels. Thermal derating becomes necessary above 60°C to maintain linearity and avoid triggering thermal protection. Extended operation near maximum temperature accelerates degradation of bond wires and semiconductor junctions, shortening mean time between failures (MTBF). Adequate ventilation, thermal vias, and load management are essential to preserve performance and longevity.
Are there any known compatibility issues between the TDA7491MV13TR and specific microcontroller PWM outputs commonly used in DIY audio projects?
The TDA7491MV13TR does not accept direct PWM input; instead, it uses analog differential inputs intended for processing filtered audio signals from DACs or preamplifiers. Connecting raw microcontroller PWM outputs to these inputs will result in distorted, aliased, or unintelligible audio due to insufficient anti-aliasing filtering. Correct usage requires an external RC low-pass filter with a cutoff frequency well below the PWM carrier (typically <20kHz) to reconstruct the analog waveform. Failure to implement proper reconstruction filtering defeats the purpose of the Class D architecture and degrades sound quality.
What is the typical turn-on/turn-off delay introduced by the mute and depop circuits in the TDA7491MV13TR, and how can this affect user experience in switching applications?
The mute function typically activates within microseconds of the MUTE pin assertion, while the depop circuit introduces a delay ranging from tens to hundreds of milliseconds during power-up and power-down. This gradual ramp ensures no audible artifacts occur, but it may feel sluggish to users expecting instantaneous response in interactive devices like karaoke machines or gaming peripherals. Designers can optimize perceived responsiveness by coordinating mute timing with system-level UI events or adjusting ramp rates through external RC networks if finer control is required.
How does the TDA7491MV13TR perform in terms of electromagnetic compatibility (EMC) when driving inductive loads like piezoelectric transducers versus dynamic speakers?
Driving inductive loads such as piezo transducers presents unique challenges because their reactive impedance causes rapid current changes that generate high-frequency ringing and EMI spikes. Compared to standard voice coils, piezo elements lack damping mechanisms, increasing susceptibility to overshoot and oscillation. While the TDA7491MV13TR includes basic protection features, additional snubber circuits or ferrite beads may be needed to suppress conducted and radiated emissions. Dynamic speakers, being more damped and predictable, generally yield cleaner EMI profiles under identical conditions.

Parts with Similar Specifications

The three parts on the right have similar specifications to STMicroelectronics TDA7491MV13TR

Product Attribute TDA7491HVU13TR TDA7491HV13TR TDA7491LP13TR TDA7491P13TR
Part Number TDA7491HVU13TR TDA7491HV13TR TDA7491LP13TR TDA7491P13TR
Manufacturer STMicroelectronics STMicroelectronics STMicroelectronics STMicroelectronics
Output Type - Current - Unbuffered Voltage - Buffered -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Features - - - Simultaneous Sampling
Series - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Type - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Voltage - Supply - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Max Output Power x Channels @ Load - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Base Product Number - DAC34H84 MAX500 ADS62P42

TDA7491MV13TR Datasheet PDF

Download TDA7491MV13TR pdf datasheets and STMicroelectronics documentation for TDA7491MV13TR - STMicroelectronics.

Datasheets
TDA7491MV.pdf
PCN Assembly/Origin
Mult Dev LeadFrame Supplier Chg 15/Oct/2019.pdf
PCN Packaging
Material Barrier Bag 17/Dec/2020.pdf

Customers Also Interested in

Recommended Products

Customer Reviews

Evaluation: 10 Articles

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

Write a Review

Your Email address will not be published.

Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
  • QC (Quality Warranty)
  • Payment Support
  • Packaging
  • Certifications & Memberships

QC (Quality Warranty)

Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.


Strict quality inspection builds a solid foundation for electronic component quality.
  1. Visual inspection
  2. Performance testing and reliability verification
  3. Standardized full-process testing
  4. Precise control of every parameter
We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.
Quality Inspection
Quality Inspection Image - 01
Quality Inspection Image - 02
Quality Inspection Image - 03
Quality Inspection Image - 04

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.
  • HKBea
  • Paypal
  • MasterCard
  • Western-Union
  • VISA
Stable Delivery, Sincere Partnership — Your Faithful Supply Chain Partner
  • Efficient Supply Management
  • Cost-Saving Procurement
  • Fast Sourcing & Delivery
Contact us if you have any questions.

Packaging

Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


ESD

Certifications & Memberships

Third-party certified, strict quality control. Our certification
  • ISO 9001: 2015
  • ISO 13485: 2016
  • ISO 14001: 2015
  • ISO 28000: 2007
  • ISO 45001: 2018
  • GB/T 27922-2011
  • SMTA
  • IPC
  • ESD
  • PSMA
TDA7491MV13TR Image

TDA7491MV13TR

STMicroelectronics
32D-TDA7491MV13TR

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

Allelco
About Us
History
Certifications
Recruitment
Policies
Terms & Conditions
Privacy Policy
Cookie Policy
Services
Order Tracking
Return & Replacement
Frequently Asked Questions
Contact Us
Order
Shipping & Delivering
Payment Methods
My Account
The BlogsHot PartsChange LanguageNewsSite map
Contact Us
Headquarters Address:
Room C 13/F Harvard Commercial Building
105-111 Thomson Road Wan Chai
HongKong
Service Tel: +852-91464856
Service Email: info@allelco.com
Follow us
Copyright © 2012-2025 AllelcoElec.com. All rights reserved.
0 RFQ
Shopping cart (0 Items)
It is empty.
Submit RFQ
Compare List (0 Items)
It is empty.
Feedback

Your feedback matters! At Allelco, we value the user experience and strive to improve it constantly.
Please share your comments with us via our feedback form, and we'll respond promptly.
Thank you for choosing Allelco.

Subject
E-mail
Comments
Captcha
Drag or click to upload file
Upload File
types: .xls, .xlsx, .doc, .docx, .jpg, .png and .pdf.
Max file size: 10MB