LM4844TLX/NOPB

Product Overview

• Category: Audio Amplifier
• Use: Amplifying audio signals for various applications
• Characteristics: High-quality sound reproduction, compact size, low power consumption
• Package: Thin Shrink Small Outline Package (TSSOP)
• Essence: Integrated audio amplifier with advanced features
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Power Supply Voltage: 2.5V to 5.5V
• Output Power: Up to 1.2W per channel
• Total Harmonic Distortion + Noise: 0.1% (typical)
• Shutdown Current: 0.01μA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM4844TLX/NOPB package consists of 20 pins, as shown below:

Pin Number | Pin Name | Description -----------|----------|------------- 1 | VDD | Power supply voltage 2 | SD | Shutdown control input 3 | INL | Left channel audio input 4 | GND | Ground 5 | INR | Right channel audio input 6 | BYP | Bypass capacitor connection 7 | AGND | Analog ground 8 | OUTL | Left channel audio output 9 | OUTR | Right channel audio output 10 | PVDD | Power supply voltage for the output stage 11 | BST | Bootstrap capacitor connection 12 | PGND | Power ground 13 | VBST | Bootstrap voltage 14 | VOUTL | Left channel output voltage 15 | VOUTR | Right channel output voltage 16 | VCM | Common-mode voltage 17 | VREF | Reference voltage 18 | BIAS | Bias voltage 19 | BYP | Bypass capacitor connection 20 | VDD | Power supply voltage

Functional Features

• High-quality audio amplification with low distortion
• Integrated shutdown control for power saving
• Single-ended or differential input configuration
• Thermal and short-circuit protection
• Pop and click suppression during power-up and shutdown

Advantages and Disadvantages

Advantages

• Compact size allows for space-saving designs
• Low power consumption extends battery life in portable devices
• High-quality sound reproduction enhances user experience
• Versatile input configuration options for different applications

Disadvantages

• Limited output power compared to higher wattage amplifiers
• Requires external components for optimal performance
• Sensitive to improper grounding and layout design

Working Principles

The LM4844TLX/NOPB is a class AB audio amplifier that operates on a single power supply voltage. It utilizes a bridge-tied load (BTL) configuration to amplify audio signals with low distortion. The amplifier accepts either single-ended or differential input signals, providing flexibility for various audio sources.

The device incorporates thermal and short-circuit protection mechanisms to ensure safe operation. It also features pop and click suppression circuitry, which eliminates unwanted noise during power-up and shutdown sequences.

Detailed Application Field Plans

The LM4844TLX/NOPB is suitable for a wide range of applications, including:

1. Portable audio devices such as smartphones, tablets, and MP3 players
2. Personal computers and laptops
3. Gaming consoles and handheld gaming devices
4. Automotive infotainment systems
5. Home audio systems and multimedia speakers

Alternative Models

Below are some alternative models that offer similar functionality:

1. LM4863LQ/NOPB
2. TPA3116D2PWPR
3. MAX98357AETE+T

These models can be considered based on specific requirements and design constraints.

In conclusion, the LM4844TLX/NOPB is a compact and efficient audio amplifier that delivers high-quality sound reproduction. Its versatile input configuration options, along with various protection features, make it suitable for a wide range of applications in the consumer electronics industry.

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