LM4838LQX/NOPB

Product Overview

Category

LM4838LQX/NOPB belongs to the category of audio power amplifiers.

Use

It is used to amplify audio signals in various electronic devices such as smartphones, tablets, portable media players, and other portable electronic devices.

Characteristics

• High efficiency
• Low quiescent current
• Thermal shutdown protection
• Short-circuit and thermal protection

Package

The LM4838LQX/NOPB comes in a small outline package (DSBGA) for easy integration into compact electronic devices.

Essence

The essence of LM4838LQX/NOPB lies in its ability to provide high-quality audio amplification in a compact and efficient package.

Packaging/Quantity

The LM4838LQX/NOPB is typically available in reels with a quantity of 2500 units per reel.

Specifications

• Power Supply Voltage: 2.7V to 5.5V
• Output Power: 1.3W at 5V, 10% THD+N, 8Ω Load
• Efficiency: Up to 90%
• Quiescent Current: 4mA
• Shutdown Current: <1µA
• Package Type: DSBGA

Detailed Pin Configuration

The LM4838LQX/NOPB has a total of 16 pins, including VDD, GND, SHUTDOWN, MODE, etc. The detailed pin configuration can be found in the product datasheet.

Functional Features

• Integrated boost converter
• Click-and-pop suppression
• Differential inputs
• Automatic gain control

Advantages and Disadvantages

Advantages

• High efficiency
• Small form factor
• Integrated protection features
• Low quiescent current

Disadvantages

• Limited output power compared to larger amplifiers
• Requires careful PCB layout due to high-frequency switching

Working Principles

The LM4838LQX/NOPB utilizes a boost converter to efficiently generate the required voltage for audio amplification. It then amplifies the audio signal using a class D amplifier topology, providing high efficiency and low power consumption.

Detailed Application Field Plans

The LM4838LQX/NOPB is well-suited for use in portable electronic devices where space and power efficiency are critical. It can be integrated into smartphones, tablets, portable media players, and other battery-powered devices requiring audio amplification.

Detailed and Complete Alternative Models

• TPA2016D2: A similar audio power amplifier with integrated boost converter
• MAX98306: Another compact audio amplifier with high efficiency and low quiescent current

In conclusion, the LM4838LQX/NOPB is a versatile audio power amplifier suitable for compact electronic devices, offering high efficiency and integrated protection features. Its small form factor and low power consumption make it an ideal choice for portable applications. However, designers should consider its limitations in output power and PCB layout requirements when selecting this amplifier for their designs.