LM48901SQX/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Audio Amplifier

Characteristics: - Small size - Low power consumption - High efficiency - Wide voltage range - Excellent audio quality

Package: QFN (Quad Flat No-leads)

Essence: The LM48901SQX/NOPB is a high-performance audio amplifier IC designed for portable electronic devices such as smartphones, tablets, and portable media players. It provides high-quality audio amplification in a compact form factor.

Packaging/Quantity: The LM48901SQX/NOPB is available in a QFN package. The quantity per reel is typically 3000 units.

Specifications

• Supply Voltage Range: 2.5V to 5.5V
• Output Power: Up to 1.2W
• Total Harmonic Distortion + Noise (THD+N): <0.1%
• Efficiency: >90%
• Shutdown Current: <1µA
• Operating Temperature Range: -40°C to 85°C

Pin Configuration

The LM48901SQX/NOPB has a total of 16 pins. The pin configuration is as follows:

Pin 1: VDD Pin 2: GND Pin 3: SD Pin 4: INL- Pin 5: INL+ Pin 6: BYP Pin 7: OUTL Pin 8: PVDD Pin 9: PGND Pin 10: OUTR Pin 11: INR+ Pin 12: INR- Pin 13: SHDN Pin 14: BST Pin 15: BIAS Pin 16: VDD

Functional Features

• Single-ended or differential input configuration
• Integrated shutdown mode for power saving
• Short-circuit and thermal protection
• Pop and click suppression during power-up and shutdown
• External gain configuration option

Advantages and Disadvantages

Advantages: - Small size allows for integration in compact devices - Low power consumption prolongs battery life - High efficiency reduces heat dissipation - Wide voltage range enables compatibility with various power sources - Excellent audio quality enhances user experience

Disadvantages: - Limited output power compared to larger amplifiers - May require additional external components for specific applications

Working Principles

The LM48901SQX/NOPB is a class D audio amplifier that utilizes pulse-width modulation (PWM) to amplify the audio signal. It converts the input analog audio signal into a digital PWM signal, which is then amplified by the power stage. The amplified PWM signal is then filtered to remove any high-frequency noise and provide a clean audio output.

Detailed Application Field Plans

The LM48901SQX/NOPB is suitable for a wide range of portable electronic devices that require audio amplification. Some potential application fields include:

1. Smartphones and tablets
2. Portable media players
3. Bluetooth speakers
4. Gaming consoles
5. Wearable devices

Detailed and Complete Alternative Models

1. LM4863SQX/NOPB
2. LM4889SQX/NOPB
3. LM4950SQX/NOPB
4. LM4970SQX/NOPB
5. LM4988SQX/NOPB

These alternative models offer similar functionality and performance to the LM48901SQX/NOPB and can be considered as alternatives depending on specific requirements.

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