LM4894LD/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: Audio amplifier
• Characteristics: Low power, mono Class D audio amplifier
• Package: LLP (Leadless Package)
• Essence: Amplifies audio signals with high efficiency and low power consumption
• Packaging/Quantity: Available in tape and reel packaging, quantity depends on supplier

Specifications

• Power Supply Voltage: 2.5V - 5.5V
• Output Power: Up to 1.1W
• Efficiency: Greater than 90%
• Total Harmonic Distortion + Noise: Less than 0.1%
• Shutdown Current: Less than 1µA
• Operating Temperature Range: -40°C to 85°C

Pin Configuration

The LM4894LD/NOPB has the following pin configuration:

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| | | 1 2 3 4 5 6 7 8 9 | |_______________________________________| | | | GND IN- IN+ SD VDD OUT | |_______________________________________| ```

Functional Features

• Mono audio amplification
• Class D amplifier architecture for high efficiency
• Low power consumption
• Shutdown mode for power saving
• Short-circuit and thermal protection

Advantages and Disadvantages

Advantages: - High efficiency - Low power consumption - Compact size due to LLP package - Shutdown mode for power saving - Protection features for enhanced reliability

Disadvantages: - Mono output only - Limited output power compared to larger amplifiers

Working Principles

The LM4894LD/NOPB is a Class D audio amplifier, which uses pulse width modulation (PWM) to amplify audio signals. It operates by rapidly switching the output stage between two states: on and off. This allows for efficient power conversion, resulting in high efficiency and low power consumption.

Detailed Application Field Plans

The LM4894LD/NOPB is commonly used in portable electronic devices such as smartphones, tablets, portable media players, and Bluetooth speakers. Its low power consumption and small size make it ideal for battery-powered applications where space is limited.

Detailed and Complete Alternative Models

• LM4863: Dual 2.2W Audio Amplifier
• LM386: Low Voltage Audio Power Amplifier
• TPA3116D2: Stereo Class D Audio Amplifier

These alternative models offer different features and specifications, providing options for various audio amplification requirements.

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