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LM4882MM

Name: LM4882MM
Rating: 4.7 (12 reviews)

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製造商。部分 #LM4882MM
包 MSOP
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規格

Brand	Texas Instruments
Product Type	Audio Amplifiers
Subcategory	Audio ICs
Package/Case	MSOP
Supply Voltage - Min	2.4 V
Supply Voltage - Max	5.5 V
Minimum Operating Temperature	- 40 C
Maximum Operating Temperature	+ 85 C
Height	0.86 mm
Length	3 mm
Operating Supply Voltage	3 V, 5 V
Width	3 mm
Product	Audio Amplifiers
Output Type	1-Channel Mono
Class	Class-AB
Output Power	480 mW
THD plus Noise	0.5 %
Audio - Load Impedance	32 Ohms
Description/Function	Speaker
Input Type	Single
Output Signal Type	Single
PSRR - Power Supply Rejection Ratio	50 dB
Supply Type	Single
Vos - Input Offset Voltage	50 mV

概述

Description

The LM4882MM is a dual audio power amplifier designed for portable applications. It is capable of delivering 2 watts per channel into an 8-ohm load with a low total harmonic distortion (THD), ensuring high-quality audio output. The device features a low quiescent current, making it ideal for battery-operated devices, and includes a shutdown mode to conserve power when not in use.
With an internal gain of 20 dB, the LM4882MM simplifies system design by reducing the need for external components. The amplifier operates on a supply voltage range of 2.5V to 5.5V, making it versatile for various applications. Its thermal shutdown and short-circuit protection enhance reliability, ensuring the device operates safely under various conditions.
The LM4882MM is commonly used in portable speakers, mobile phones, and other audio devices where space and power efficiency are crucial. Overall, it is a compact, efficient solution for delivering quality audio in small form factors.

Features

The LM4882MM is a dual audio power amplifier designed for various applications, including portable devices and multimedia systems. Key features include:
1. Output Power: Delivers up to 2.2W per channel into an 8-ohm load with low distortion.
2. Low Noise: Designed for minimal noise and high fidelity, making it suitable for audio applications.
3. Thermal Shutdown: Includes protection features to prevent damage from overheating.
4. Short-Circuit Protection: Guards against short circuits to enhance reliability.
5. Wide Supply Voltage Range: Operates with a supply voltage from 2.5V to 5.5V, accommodating battery-powered applications.
6. High Efficiency: Designed to maximize efficiency, extending battery life in portable devices.
7. Small Package Size: Offered in a compact surface-mount package, ideal for space-constrained designs.
8. Pop-and-Click Suppression: Reduces audible clicks during power-up and shutdown.
These features make the LM4882MM an excellent choice for enhancing audio performance in compact electronic devices.

Package

The LM4882MM is packaged in a "Mini SO" (Small Outline) format, specifically a 8-lead surface-mount package.

Pinout

The LM4882MM is a dual audio power amplifier contained in an 8-pin MSOP package. It is designed for applications such as portable audio devices and can drive speakers directly.
Pin Count and Functions:
1. Pin 1 (OUT1): Output for amplifier channel 1.
2. Pin 2 (GND): Ground reference.
3. Pin 3 (VDD): Power supply voltage input.
4. Pin 4 (IN1): Non-inverting input for amplifier channel 1.
5. Pin 5 (IN2): Non-inverting input for amplifier channel 2.
6. Pin 6 (GND): Ground reference.
7. Pin 7 (OUT2): Output for amplifier channel 2.
8. Pin 8 (NC): No connection (not used).
The LM4882MM can deliver up to 1.2W per channel with a suitable power supply and is characterized by low distortion and low power consumption, making it ideal for battery-operated devices.

Manufacturer

The LM4882MM is manufactured by Texas Instruments (TI), a leading global semiconductor company. Texas Instruments designs and produces a wide range of electronic components, including analog and digital semiconductors, embedded processors, and microcontrollers. Established in 1930, TI serves various markets, including automotive, industrial, communication, and consumer electronics. The company is well-known for its innovations in signal processing and power management solutions, and it plays a significant role in advancing technology in numerous applications, from everyday consumer devices to complex industrial systems.

Application

The LM4882MM is a low-power audio amplifier primarily used in portable audio devices, such as mobile phones, laptops, and tablets. It is suitable for driving speakers or headphones in consumer electronics, gaming devices, and multimedia applications. Its efficient design allows for extended battery life while delivering high-quality sound output, making it ideal for compact audio solutions in various applications.

Equivalent

The LM4882MM chip is a dual audio power amplifier. Equivalent products include the LM4861, LM4863, and the TPA2015D1 from Texas Instruments. Other alternatives are the MAX9722 from Maxim Integrated and the PAM8403 from PAM. Ensure to check specifications such as voltage, current, and output power to confirm compatibility.