LM4844TL/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Audio Amplifier

Characteristics: - Mono Class AB audio power amplifier - Designed for portable devices such as smartphones, tablets, and portable media players - Provides high-quality audio amplification for small speakers or headphones - Low power consumption and compact size

Package: Thin Shrink Small Outline Package (TSSOP)

Essence: The LM4844TL/NOPB is a highly efficient audio amplifier that delivers clear and powerful sound in portable electronic devices.

Packaging/Quantity: Available in tape and reel packaging with 2500 units per reel.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Output Power: Up to 1.2W into 8Ω at 5V
• Total Harmonic Distortion + Noise (THD+N): 0.1% (typical)
• Shutdown Current: 0.01μA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM4844TL/NOPB has a total of 20 pins arranged as follows:

Pin Number | Pin Name | Description -----------|----------|------------ 1 | SD | Shutdown Control Input 2 | INL | Left Channel Audio Input 3 | VDD | Positive Power Supply 4 | GND | Ground 5 | BYP | Bypass Capacitor Connection 6 | OUTL | Left Channel Audio Output 7 | PVDD | Positive Power Supply 8 | PGND | Ground 9 | VREF | Reference Voltage Output 10 | VCOM | Common Mode Voltage Output 11 | INR | Right Channel Audio Input 12 | SD | Shutdown Control Input 13 | OUTR | Right Channel Audio Output 14-20 | NC | No Connection

Functional Features

• Low quiescent current consumption for extended battery life
• Thermal shutdown protection to prevent overheating
• Short-circuit and overcurrent protection for speaker and amplifier safety
• Pop and click suppression during power-on and power-off transitions
• Flexible shutdown control for power-saving mode

Advantages and Disadvantages

Advantages: - High-quality audio amplification with low distortion - Compact size suitable for portable devices - Efficient power consumption for longer battery life - Built-in protection features for enhanced durability

Disadvantages: - Limited output power compared to larger audio amplifiers - Not suitable for high-power audio applications

Working Principles

The LM4844TL/NOPB operates as a Class AB audio power amplifier. It amplifies the audio signal received from the input channels (INL and INR) and delivers it to the corresponding output channels (OUTL and OUTR). The amplifier is designed to provide high-quality audio reproduction while minimizing power consumption.

Detailed Application Field Plans

The LM4844TL/NOPB is widely used in various portable electronic devices, including: - Smartphones - Tablets - Portable media players - Bluetooth speakers - Gaming consoles

Detailed and Complete Alternative Models

1. LM4863LQ/NOPB - Stereo Class AB Audio Power Amplifier
2. LM4889MM/NOPB - Mono Class D Audio Power Amplifier
3. LM4950TL/NOPB - Stereo Class AB Audio Power Amplifier
4. LM4990MM/NOPB - Mono Class D Audio Power Amplifier
5. LM4991MM/NOPB - Stereo Class D Audio Power Amplifier

These alternative models offer similar functionality and can be considered as alternatives to the LM4844TL/NOPB based on specific application requirements.

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