LM4857ITLX/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: Thin SOT-23 package

Essence: LM4857ITLX/NOPB is a high-performance audio amplifier IC designed for portable electronic devices such as smartphones, tablets, and portable media players.

Packaging/Quantity: Available in tape and reel packaging with 3000 units per reel.

Specifications

• Supply Voltage Range: 2.5V to 5.5V
• Output Power: Up to 1.1W
• Efficiency: >90%
• Total Harmonic Distortion (THD): <0.1%
• Shutdown Current: <1µA
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM4857ITLX/NOPB IC has the following pin configuration:

1. VDD: Power supply input
2. SHUTDOWN: Shutdown control input
3. GND: Ground
4. IN+: Positive audio input
5. IN-: Negative audio input
6. OUT: Audio output

Functional Features

• Single-ended or differential input capability
• Pop and click suppression circuitry
• Thermal shutdown protection
• Short-circuit and thermal overload protection
• Low quiescent current

Advantages and Disadvantages

Advantages: - Compact size allows for integration into small form factor devices - Low power consumption extends battery life - High efficiency minimizes heat dissipation - Wide voltage range enables compatibility with various power sources - Delivers excellent audio quality for an enhanced user experience

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

Working Principles

The LM4857ITLX/NOPB is a class AB audio amplifier that utilizes a bridge-tied load (BTL) configuration. It amplifies the audio signal received from the input and delivers it to the output with improved power efficiency and reduced distortion.

Detailed Application Field Plans

The LM4857ITLX/NOPB is suitable for a wide range of portable electronic devices, including: - Smartphones - Tablets - Portable media players - Bluetooth speakers - Gaming consoles - Wearable devices

Alternative Models

1. LM4863: 2.2W Audio Power Amplifier
2. LM386: Low Voltage Audio Power Amplifier
3. TPA3116D2: 50W Stereo Class D Audio Amplifier

These alternative models offer different power outputs and features, providing flexibility for various audio amplification requirements.

In conclusion, the LM4857ITLX/NOPB is a compact and efficient audio amplifier IC designed for portable electronic devices. With its excellent audio quality and low power consumption, it is an ideal choice for enhancing the audio experience in a wide range of applications.