LM48511SQ/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Audio Power Amplifier

Characteristics: - High efficiency - Low quiescent current - Wide supply voltage range - Thermal shutdown protection - Short-circuit and over-temperature protection

Package: 20-WQFN (4x4)

Essence: The LM48511SQ/NOPB is a high-performance audio power amplifier IC designed for portable devices such as smartphones, tablets, and portable media players.

Packaging/Quantity: The LM48511SQ/NOPB is available in a 20-WQFN package. It is typically sold in reels of 2500 units.

Specifications

• Supply Voltage Range: 2.5V to 5.5V
• Output Power: Up to 1.6W per channel into 8Ω load at 5V supply
• Efficiency: Up to 90%
• Quiescent Current: 3.5mA (typical)
• Shutdown Current: <1µA (typical)
• Total Harmonic Distortion + Noise (THD+N): 0.03% (typical)
• Signal-to-Noise Ratio (SNR): 95dB (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM48511SQ/NOPB has the following pin configuration:

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| | | LM48511SQ/NOPB | |_______________________________________| | | | _______________ | | | | | | INL --> | | <-- OUTL | | | | | | INR --> | | <-- OUTR | | | | | | GND --> | | <-- VDD | | |_______________| | | | |_______________________________________| ```

Functional Features

• High efficiency audio power amplifier
• Low quiescent current for extended battery life
• Thermal shutdown protection to prevent overheating
• Short-circuit and over-temperature protection for device safety
• Wide supply voltage range for compatibility with various devices

Advantages and Disadvantages

Advantages: - High efficiency results in longer battery life - Wide supply voltage range allows for versatile applications - Thermal shutdown and short-circuit protection enhance device safety

Disadvantages: - Limited output power compared to higher wattage amplifiers - May require additional components for optimal performance

Working Principles

The LM48511SQ/NOPB is a class D audio power amplifier that utilizes pulse-width modulation (PWM) to deliver high-quality audio output. It operates by rapidly switching the input signal on and off, resulting in efficient power conversion and minimal heat dissipation. The amplified audio signal is then delivered to the connected speakers.

Detailed Application Field Plans

The LM48511SQ/NOPB is commonly used in portable electronic devices where space and power efficiency are crucial. Some of its application fields include:

1. Smartphones
2. Tablets
3. Portable media players
4. Bluetooth speakers
5. Gaming consoles

Detailed and Complete Alternative Models

1. LM4863SQ/NOPB
2. LM4889SQ/NOPB
3. TPA3110D2PWP
4. MAX98357AETE+T
5. PAM8406DR

These alternative models offer similar functionality and can be considered as alternatives to the LM48511SQ/NOPB based on specific requirements and design considerations.

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