LM4864MX/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Audio Amplifier

Characteristics: - Single supply voltage: 5V to 12V - Output power: 1.1W (typical) at 5V, 10% THD+N, 8Ω load - Low quiescent current: 4mA (typical) - Shutdown mode for power saving - Thermal shutdown protection - Short-circuit and thermal overload protection - Small package size: SOIC-8

Package: Surface Mount Package

Essence: The LM4864MX/NOPB is a mono audio amplifier IC designed for low-power applications. It provides high-quality audio amplification with minimal external components.

Packaging/Quantity: The LM4864MX/NOPB is available in tape and reel packaging, with 2500 units per reel.

Specifications

• Supply Voltage Range: 5V to 12V
• Quiescent Current: 4mA (typical)
• Output Power: 1.1W (typical) at 5V, 10% THD+N, 8Ω load
• Shutdown Current: 0.6μA (typical)
• Total Harmonic Distortion + Noise (THD+N): 0.2% (typical) at 1kHz, 1.0W, 8Ω load
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM4864MX/NOPB has a total of 8 pins arranged as follows:

___________ | | NC |1 8| VCC IN- |2 7| SHUTDOWN IN+ |3 6| OUT GND |4 5| BYPASS |___________|

1. NC: No Connection
2. IN-: Negative Input
3. IN+: Positive Input
4. GND: Ground
5. BYPASS: Bypass Capacitor Pin
6. OUT: Output Pin
7. SHUTDOWN: Shutdown Control Pin
8. VCC: Supply Voltage

Functional Features

• Single-ended output configuration
• Low quiescent current for power efficiency
• Shutdown mode for power saving when not in use
• Thermal shutdown protection to prevent overheating
• Short-circuit and thermal overload protection for device safety
• Bypass pin for improved audio quality

Advantages and Disadvantages

Advantages: - Low power consumption - Small package size - High-quality audio amplification - Built-in protection features

Disadvantages: - Limited output power compared to higher wattage amplifiers - Mono output only

Working Principles

The LM4864MX/NOPB is a class AB audio amplifier that operates on a single supply voltage. It amplifies the input audio signal and provides an amplified output through the OUT pin. The amplifier can be controlled using the SHUTDOWN pin, which allows for power-saving when the device is not in use. The IC also incorporates various protection features to ensure safe operation.

Detailed Application Field Plans

The LM4864MX/NOPB is commonly used in low-power audio applications such as portable devices, battery-powered speakers, headphones, and small audio systems. Its compact size and low power consumption make it suitable for space-constrained and energy-efficient designs.

Detailed and Complete Alternative Models

• LM4863MX/NOPB: Similar to LM4864MX/NOPB but with stereo output capability.
• LM386N-1/NOPB: Low voltage audio power amplifier with similar characteristics.
• TPA3110D2PWP: Higher power audio amplifier with stereo output and advanced features.

These alternative models offer different features and specifications to cater to various application requirements.

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