LM4808MX

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LM4808MX

AUDIO AMPLIFIER, 0.15W, 2 CHANNE

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概述

Description

The LM4808MX is a high-performance audio power amplifier designed for portable audio applications. It is capable of delivering up to 1.5W of output power into a load of 4 ohms with low total harmonic distortion (THD), making it suitable for driving speakers in handheld devices such as smartphones, tablets, and portable speakers.
Key features include a low supply voltage operation (typically around 5V), minimal external components required for setup, and built-in thermal shutdown and short-circuit protection for enhanced reliability. The device operates in a bridge-tied load (BTL) configuration, allowing it to maximize output power while minimizing board space.
With a signal-to-noise ratio (SNR) that ensures clear audio reproduction, the LM4808MX is well-suited for applications requiring high-quality sound output. Its compact size and efficiency make it an ideal choice for modern electronic devices focusing on portability and sound performance.

Features

The LM4808MX is a low-voltage audio power amplifier designed for portable applications. Key features include:
1. Output Power: Delivers 1.3W per channel at 4Ω, allowing for high-quality audio output.
2. Low Supply Voltage: Operates efficiently with supply voltages between 2.5V and 5.5V, making it suitable for battery-powered devices.
3. Minimal External Components: Requires few external components for ease of design and reduced PCB space.
4. Integrated Thermal Protection: Prevents overheating, enhancing reliability and longevity.
5. Low Distortion: Offers low total harmonic distortion (THD) for clear audio reproduction.
6. High PSRR: Provides excellent power supply rejection ratio, ensuring consistent performance even with supply voltage variations.
7. Pop & Click Suppression: Reduces noise during power-up and power-down, enhancing user experience.
8. Package: Available in a compact surface-mount package, ideal for space-constrained applications.
These features make the LM4808MX suitable for use in portable speakers, smartphones, and other compact audio devices.

Package

The LM4808MX is typically supplied in a 20-pin TSSOP (Thin Shrink Small Outline Package) package type. This surface-mount package is designed for compact applications, providing efficient use of space on printed circuit boards.

Pinout

The LM4808MX is a dual power amplifier designed for portable audio applications. It comes in a 20-pin HTSSOP package.
Pin Count and Key Functions:
1. Pins 1-4: Power connections (VDD and GND).
2. Pins 5-6: Input connections for the audio signals.
3. Pins 7-8: Output connections to speakers (OUT1, OUT2).
4. Pin 9: Bypass capacitor connection for improved stability.
5. Pin 10: Gain setting (adjustable).
6. Pins 11-14: Additional audio input/output connections for various configurations.
7. Pin 15: Standby control (enables low-power mode).
8. Pins 16-20: Additional power and ground connections, as well as feedback and control pins.
The LM4808MX provides efficient audio amplification suitable for mobile devices, ensuring high-quality sound output with minimal distortion.

Manufacturer

The LM4808MX is manufactured by Texas Instruments (TI), a leading global semiconductor company. Founded in 1930, Texas Instruments specializes in designing and manufacturing a variety of integrated circuits and semiconductor devices. The company is well-known for its analog and embedded processing products, which are used in various applications, including automotive, industrial, communications, and consumer electronics. TI is recognized for its innovation and contributions to the electronics industry, providing solutions that enhance performance and efficiency in electronic designs.

Application

The LM4808MX is an audio amplifier designed for consumer electronics applications. It is commonly used in portable audio devices, mobile phones, laptops, and digital media players for driving speakers and headphones. Its features include low total harmonic distortion and good power efficiency, making it suitable for applications requiring high-quality audio output in compact designs.

Equivalent

The LM4808MX is a low-power audio amplifier. Equivalent products include the TDA7265, PAM8403, and LM4871. It's important to check specific parameters like voltage, output power, and package type for compatibility in your application. Always refer to the datasheets for exact specifications.

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