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LM4861MX

Name: LM4861MX
Rating: 4.7 (12 reviews)

IC AMP CLASS AB MONO 1.5W 8SOIC

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Mfr。パート #LM4861MX
パッケージ SOIC (D)-8
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仕様

Package	Tape & Reel (TR),Cut Tape (CT)
Series	Boomer®
ProductStatus	Active
Type	Class AB
OutputType	1-Channel (Mono)
MaxOutputPowerxChannels@Load	1.5W x 1 @ 8Ohm
Voltage-Supply	2V ~ 5.5V
Features	Shutdown, Thermal Protection
MountingType	Surface Mount
OperatingTemperature	-40°C ~ 85°C (TA)
SupplierDevicePackage	8-SOIC

概要

Description

The LM4861MX is a low-power audio amplifier designed for portable electronics, such as mobile phones, tablets, and other battery-operated devices. It integrates a high-performance class AB amplifier that provides up to 1.5 watts of output power into a 4-ohm load. The device features a built-in thermal shutdown, short-circuit protection, and a low quiescent current of 20 µA, making it suitable for energy-efficient applications.
The LM4861MX operates from a power supply of 2.5V to 5.5V, which allows for flexibility in design. It supports external gain configuration, enabling designers to adjust the gain to meet specific application requirements. The amplifier is housed in a compact, surface-mount package, facilitating ease of integration into various circuit designs.
Ideal for enhancing audio performance in small form factors, the LM4861MX is popular among engineers looking for reliable, high-quality audio output with minimal power consumption.

Features

The LM4861MX is a low-power audio amplifier designed for portable applications. Key features include:
1. Power Output: Delivers up to 1W output power into an 8Ω load.
2. Low Distortion: Achieves low total harmonic distortion (THD), typically around 0.1%, ensuring clear audio reproduction.
3. Wide Supply Voltage Range: Operates from a supply voltage of 2.5V to 5.5V, making it versatile for various battery-powered devices.
4. Built-in Thermal Shutdown: Protects the device from overheating, enhancing reliability.
5. Internal Gain Setting: Features a fixed gain of 20V/V, simplifying design requirements.
6. Low Quiescent Current: Consumes minimal power in idle mode, prolonging battery life.
7. Short-Circuit Protection: Safeguards against output load short circuits.
8. Integrated Bypass Capacitor: Reduces external component count, simplifying circuit design.
These features make the LM4861MX suitable for applications in portable speakers, personal audio devices, and other battery-operated electronics.

Package

The LM4861MX is typically packaged in a 20-pin TSSOP (Thin Shrink Small Outline Package).

Pinout

The LM4861MX is a low-power audio amplifier IC, specifically designed for portable audio applications. It has a total of 8 pins. Here is a brief overview of the pin configuration and their functions:
1. Pin 1 (VDD): Power supply input (typically +5V).
2. Pin 2 (GND): Ground reference.
3. Pin 3 (IN+): Non-inverting audio input.
4. Pin 4 (IN−): Inverting audio input.
5. Pin 5 (OUT): Output to speaker or load.
6. Pin 6 (VREF): Reference voltage output, often connected to a capacitor for stability.
7. Pin 7 (Shutdown): Active low shutdown control pin to reduce power consumption.
8. Pin 8 (Gain): Gain setting pin; can be connected to ground or a resistor to set the desired gain.
The LM4861MX is capable of delivering up to 1W of output power, making it suitable for driving small speakers or headphones.

Manufacturer

The LM4861MX is manufactured by Texas Instruments (TI), a prominent American technology company. Texas Instruments specializes in semiconductor design and manufacturing, particularly in analog and embedded processing. The company is well-known for its wide range of electronic components, including amplifiers, microcontrollers, and signal processors, catering to various industries like automotive, industrial, communications, and consumer electronics. TI is recognized for its innovation and leadership in the semiconductor market, contributing significantly to advancements in electronic technology.

Application

The LM4861MX is a low-power audio amplifier primarily used in portable devices, such as mobile phones, tablets, and laptop computers. It is suitable for consumer electronics, including radios and TVs, as well as in automotive applications for sound systems. Its compact size and efficient design make it ideal for applications requiring high-quality audio output with minimal power consumption.

Equivalent

Equivalent products to the LM4861MX chip include the LM4861M, LM4860, and LM4862. Other alternatives may include the TDA7052, TDA7269, and various audio amplifiers from manufacturers like STMicroelectronics and NXP. Always check specific data sheets for compatibility and specifications.