TDA7377

Images are for reference only

TDA7377

+BOM

IC AMP CLASS AB DUAL/QUAD 35W

  • ManufacturerSTMicroelectronics

  • Mfr. Part #TDA7377

  • In Stock6833

365 Days Quality Guarantee

7*24 hours service quarantee

90-day after-sales guarantee

Genuine Product Guarantee

Specifications

Attribute Value
Part Status Obsolete
Base Product Number TDA7377
Type Class AB
Output Type 2-Channel (Stereo) or 4-Channel (Quad)
Max Output Power x Channels @ Load 35W x 2 @ 4Ohm; 10W x 4 @ 2Ohm
Voltage - Supply 8V ~ 18V
Features Depop, Short-Circuit and Thermal Protection, Standby
Packaging Tube

Overview

Description

The TDA7377 is a versatile integrated audio amplifier commonly used in car audio systems and home stereo equipment. Produced by STMicroelectronics, it is a Class AB power amplifier featuring four channels, allowing it to drive multiple speakers simultaneously. It can be configured in a bridge or quad-channel mode, providing flexibility in various audio applications.
Key features of the TDA7377 include high output power, low distortion, and a wide operating voltage range (up to 18 volts), making it suitable for automotive and home audio environments. The amplifier also incorporates built-in protection mechanisms, such as short-circuit protection, thermal shutdown, and over-voltage safeguards, which enhance its reliability and longevity.
Its efficiency and performance make it ideal for use in compact or budget audio setups where sound quality and robustness are crucial. The TDA7377 is appreciated for its balance of power, sound quality, and durability, making it a popular choice for those looking to build or upgrade audio systems without incurring high costs.

Equivalent

The TDA7377 is a car audio amplifier IC. Equivalent alternatives include the TDA7388TDA7386TDA7297 and LM1875. These chips vary slightly in features such as power output and configuration, so it's important to check their specifications to ensure compatibility with your specific requirements.

Features

The TDA7377 is a stereo audio amplifier integrated circuit known for its use in car audio systems and home audio applications. Key features include:
1. Output Power: It delivers up to 35W per channel in a stereo configuration, with a bridge-tied load (BTL) output mode, providing strong audio performance for medium power applications.
2. Supply Voltage: Operates with a wide supply voltage range, typically from 12V to 18V, making it suitable for automotive environments.
3. Low Distortion: Offers low total harmonic distortion (THD), ensuring clear and high-quality audio reproduction.
4. Protection Features: Includes built-in protection against short circuits and overheating, enhancing reliability and durability.
5. Mute/Standby Functions: Equipped with mute and standby functions to minimize power consumption and prevent noise during power-up or shutdown.
6. Versatility: Can be configured in different modes, such as stereo, dual bridge, or quad single-ended, to accommodate various application needs.
7. Component Count: Requires a minimal external component count, simplifying circuit design and reducing overall system cost.

Pinout

The TDA7377 is a dual bridge audio amplifier IC often used in car audio and home stereo systems. It is usually housed in a multiwatt package and has a total pin count of 15. Here’s a brief overview of its pins and their functions:
1. Pin 1: Output 1 (OUT1)
2. Pin 2: Output 2 (OUT2)
3. Pin 3: +Vs (Positive supply voltage)
4. Pin 4: Output 3 (OUT3)
5. Pin 5: Output 4 (OUT4)
6. Pin 6: GND (Ground)
7. Pin 7: Standby
8. Pin 8: Input 1 (IN1)
9. Pin 9: Input 2 (IN2)
10. Pin 10: SVR (Supply Voltage Rejection)
11. Pin 11: N.C. (No connection)
12. Pin 12: Input 3 (IN3)
13. Pin 13: Input 4 (IN4)
14. Pin 14: Mute
15. Pin 15: -Vs (Negative supply voltage, GND in single-supply)
The TDA7377 can operate in both stereo and bridge modes, providing flexible options for various audio applications, offering up to 35W per channel in bridge mode.

Manufacturer

The TDA7377 is manufactured by STMicroelectronics. STMicroelectronics is a multinational electronics and semiconductor manufacturer, headquartered in Geneva, Switzerland. It is one of the world's largest semiconductor companies and provides a broad range of products and solutions for various sectors, including automotive, industrial, personal electronics, and communications. The company is known for its innovation in semiconductor technologies and offers integrated solutions combining hardware and software expertise.

Application

The TDA7377 is a versatile audio amplifier integrated circuit commonly used in car audio systems, home stereo systems, and other audio amplification applications. It is designed for dual bridge or quad single-ended configurations, making it suitable for amplifying stereo speakers. The IC offers reliable performance with features like short-circuit protection, thermal shutdown, and high output power, typically around 30W per channel in bridge mode. Its compact and efficient design makes it ideal for use in consumer electronics, portable audio devices, and public address systems where space and power efficiency are important considerations.

Package

The TDA7377 is typically housed in a Multiwatt15 package, which is a 15-pin, through-hole package designed for easy mounting and heat dissipation in audio amplifier applications.

Frequently Asked Questions


Q: What is the maximum output power for stereo mode with a 4Ω load?
A: The TDA7377 delivers up to 35W per channel (35W x 2) into 4Ω loads in Class AB stereo operation.


Q: Can this amplifier be configured as a 4-channel output?
A: Yes, it supports quad mode, outputting 10W x 4 channels into 2Ω loads for multi-speaker systems.


Q: What is the recommended supply voltage range for the TDA7377?
A: The device operates reliably with a supply voltage from 8V to 18V, suitable for automotive and battery-powered audio.


Q: What protection features does the TDA7377 include?
A: It integrates short-circuit protection, thermal shutdown, and depop circuitry to prevent audible clicks during power-up.


Q: Is the TDA7377 suitable for new designs?
A: No, the part status is "Obsolete". It is recommended for legacy system repairs or while existing stock lasts.


Q: What does the "Standby" feature do in this amplifier?
A: The standby function disables the amplifier outputs, reducing power consumption to near zero when audio output is not needed.


Q: How does the Depop feature improve audio performance?
A: The Depop feature suppresses popping noise during power-up, power-down, or mode switching, ensuring clean audio start/stop.


Q: What is the typical application for a 2-channel vs. 4-channel configuration?
A: Stereo mode (2-ch) is ideal for front/rear car speakers, while quad mode (4-ch) drives a full car audio system with four separate speakers.


Products related to TDA7377

  • Rapid Quote

  • Submit your quote request for TDA7377 using this form.we will respond within 12 hours.