LM4900MM/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Audio Amplifier

Characteristics: - Single supply voltage: 2.7V to 5.5V - Output power: 1W - Low quiescent current: 4mA - Shutdown mode for power saving - Thermal shutdown protection - Short-circuit and thermal overload protection

Package: 8-pin SOIC (Small Outline Integrated Circuit)

Essence: The LM4900MM/NOPB is a mono audio amplifier IC designed for low-power applications. It provides high-quality audio amplification with minimal power consumption.

Packaging/Quantity: The LM4900MM/NOPB is typically sold in reels containing 2500 units per reel.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Quiescent Current: 4mA
• Output Power: 1W into 8Ω at 5V
• Shutdown Current: 0.01μA
• Total Harmonic Distortion + Noise (THD+N): 0.2% (typical)
• Signal-to-Noise Ratio (SNR): 90dB (typical)
• Shutdown Mode Supply Current: 0.01μA

Pin Configuration

The LM4900MM/NOPB has the following pin configuration:

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

Functional Features

1. Low Power Consumption: The LM4900MM/NOPB operates on a single supply voltage, making it suitable for battery-powered devices.
2. Shutdown Mode: It includes a shutdown pin that allows the amplifier to enter a low-power state when not in use, conserving energy.
3. Thermal Shutdown Protection: The IC has built-in thermal protection to prevent overheating and ensure safe operation.
4. Short-Circuit and Thermal Overload Protection: The LM4900MM/NOPB incorporates protection mechanisms to safeguard against short-circuits and thermal overloads, enhancing its durability.

Advantages and Disadvantages

Advantages: - Low power consumption - Compact package size - Shutdown mode for power saving - Built-in protection features

Disadvantages: - Limited output power (1W) - Mono audio amplification only

Working Principles

The LM4900MM/NOPB is a class AB audio amplifier that utilizes a single supply voltage. It amplifies the input audio signal and delivers it to the connected speaker or load. The IC operates in a low quiescent current mode, minimizing power consumption. It also includes shutdown, thermal shutdown, and short-circuit protection features to ensure safe and reliable operation.

Application Field Plans

The LM4900MM/NOPB can be used in various applications, including: 1. Portable audio devices 2. Mobile phones 3. Personal computers 4. Gaming consoles 5. Home entertainment systems

Alternative Models

Some alternative models to the LM4900MM/NOPB include: - LM4861MM/NOPB - LM4881MM/NOPB - LM4950MM/NOPB - LM4990MM/NOPB

These models offer similar functionality and characteristics, providing options for different design requirements.

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