LM4819MM/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Audio Amplifier

Characteristics: - Mono Class AB audio power amplifier - Low quiescent current consumption - Wide supply voltage range - Small package size - High output power capability

Package: Miniature 8-pin MSOP (Micro Small Outline Package)

Essence: The LM4819MM/NOPB is a mono audio power amplifier IC designed for low-power applications. It provides high-quality audio amplification with low distortion and low power consumption.

Packaging/Quantity: The LM4819MM/NOPB is available in tape and reel packaging, with 2500 units per reel.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Quiescent Current: 1.6mA (typical)
• Output Power: Up to 1.1W into 8Ω at 5V
• Total Harmonic Distortion + Noise (THD+N): 0.1% (typical) at 1kHz, 1W into 8Ω
• Shutdown Current: 0.01μA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM4819MM/NOPB has the following pin configuration:

____ VDD | | GND IN+ | | SHDN IN- | | OUT BYP |____| NC

• VDD: Positive power supply
• GND: Ground reference
• IN+: Non-inverting input
• IN-: Inverting input
• SHDN: Shutdown control input
• OUT: Amplified audio output
• BYP: Bypass capacitor connection
• NC: No connection

Functional Features

1. Low quiescent current consumption allows for extended battery life in portable applications.
2. Wide supply voltage range enables operation with various power sources.
3. Small package size facilitates space-constrained designs.
4. High output power capability provides sufficient audio amplification for small speakers or headphones.

Advantages and Disadvantages

Advantages: - Low power consumption - Compact size - High-quality audio amplification - Wide operating voltage range

Disadvantages: - Mono output only - Limited output power for high-power audio applications

Working Principles

The LM4819MM/NOPB operates as a Class AB audio power amplifier. It amplifies the input audio signal and delivers it to the output pin, providing sufficient power to drive small speakers or headphones. The shutdown control input allows for power-saving operation when the amplifier is not in use.

Application Field Plans

The LM4819MM/NOPB is suitable for various low-power audio amplification applications, including but not limited to: - Portable audio devices - Mobile phones - Tablets - MP3 players - Personal computers - Gaming consoles

Alternative Models

1. LM4861MM/NOPB: Stereo audio power amplifier IC with similar characteristics and package.
2. LM386N-1/NOPB: Mono audio amplifier IC with lower power consumption and different package.
3. TPA3110D2PWP: Stereo Class D audio amplifier IC with higher output power and different package.

These alternative models offer different features and specifications, allowing designers to choose the most suitable option for their specific application requirements.

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