LM48557URX/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Audio Amplifier

Characteristics: - High-quality audio amplification - Low power consumption - Small form factor - Wide voltage range operation

Package: QFN (Quad Flat No-leads) package

Essence: The LM48557URX/NOPB is a high-performance audio amplifier IC designed for portable electronic devices such as smartphones, tablets, and portable media players.

Packaging/Quantity: The LM48557URX/NOPB is typically sold in reels containing 2500 units per reel.

Specifications

• Supply Voltage Range: 2.5V to 5.5V
• Output Power: Up to 1.1W per channel into 8Ω load at 5V supply
• Total Harmonic Distortion + Noise (THD+N): 0.03% (typical)
• Shutdown Current: 0.01μA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The LM48557URX/NOPB has a total of 20 pins arranged as follows:

Pin 1: VDD Pin 2: SD Pin 3: GND Pin 4: INL- Pin 5: INL+ Pin 6: SHUTDOWN Pin 7: OUTL Pin 8: NC Pin 9: NC Pin 10: NC Pin 11: NC Pin 12: NC Pin 13: NC Pin 14: NC Pin 15: NC Pin 16: NC Pin 17: N.C. Pin 18: INR+ Pin 19: INR- Pin 20: OUTR

Functional Features

• High-quality audio amplification for stereo speakers
• Low power consumption, ideal for portable devices
• Shutdown mode for power-saving when not in use
• Short-circuit and thermal protection
• Pop and click suppression during power-up and shutdown

Advantages and Disadvantages

Advantages: - Compact size and low power consumption make it suitable for portable devices - High-quality audio amplification ensures excellent sound reproduction - Built-in protection features enhance reliability and durability

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

Working Principles

The LM48557URX/NOPB is a class AB audio amplifier that utilizes a bridge-tied load (BTL) configuration. It amplifies the audio signal received from the input pins and drives the connected speakers with sufficient power. The amplifier operates within a specified voltage range and incorporates various protection mechanisms to ensure safe and reliable operation.

Detailed Application Field Plans

The LM48557URX/NOPB is widely used in various portable electronic devices, including: - Smartphones - Tablets - Portable media players - Bluetooth speakers - Gaming consoles

Detailed and Complete Alternative Models

Some alternative models to the LM48557URX/NOPB include: - LM4863MX/NOPB - TPA3116D2PWPR - MAX98357AETE+T

These alternative models offer similar functionality and can be considered as replacements depending on specific requirements and design considerations.

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