LM4892M/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Audio Power Amplifier

Characteristics: - High efficiency - Low quiescent current - Small package size - Wide supply voltage range

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

Essence: The LM4892M/NOPB is a high-performance audio power amplifier IC designed for portable electronic devices such as smartphones, tablets, and portable media players.

Packaging/Quantity: The LM4892M/NOPB is available in tape and reel packaging with a quantity of 2500 units per reel.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Output Power: Up to 1.1W into 8Ω at 5V
• Quiescent Current: 3.6mA (typical)
• Shutdown Current: 0.01μA (typical)
• Total Harmonic Distortion + Noise (THD+N): 0.1% (typical) at 1kHz, 1.0W into 8Ω
• Signal-to-Noise Ratio (SNR): 95dB (typical) at 1kHz, 1.0W into 8Ω

Pin Configuration

The LM4892M/NOPB has the following pin configuration:

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| | | OUT+ | |___________| | | | OUT- | |___________| | | | GND | |___________| | | | VDD | |___________| | | | SD | |___________| | | | IN- | |___________| | | | IN+ | |___________| ```

Functional Features

• High efficiency audio power amplifier
• Low quiescent current for extended battery life
• Shutdown mode for power saving
• Thermal shutdown protection
• Short-circuit and over-temperature protection

Advantages and Disadvantages

Advantages: - High efficiency results in longer battery life - Small package size allows for compact device designs - Wide supply voltage range enables compatibility with various power sources - Shutdown mode reduces power consumption during idle periods - Protection features ensure safe operation and prevent damage to the IC

Disadvantages: - Limited output power compared to larger audio amplifiers - May require additional external components for optimal performance

Working Principles

The LM4892M/NOPB is a class AB audio power amplifier that amplifies low-power audio signals from devices such as smartphones or tablets. It operates by receiving an input audio signal through the IN+ and IN- pins, which is then amplified and delivered to the connected speaker or headphone through the OUT+ and OUT- pins. The amplifier's high efficiency and low quiescent current make it suitable for portable electronic devices.

Detailed Application Field Plans

The LM4892M/NOPB can be used in various applications, including: 1. Smartphones and mobile phones 2. Tablets and portable media players 3. Portable gaming devices 4. Bluetooth speakers 5. Personal audio devices

Detailed and Complete Alternative Models

Some alternative models to the LM4892M/NOPB include: 1. LM4863M/NOPB 2. LM4889M/NOPB 3. TPA2005D1PWPR 4. MAX98306EWV+ 5. TS4990IST

These alternative models offer similar functionality and can be considered as replacements for the LM4892M/NOPB in different applications.

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