LM4890MM/NOPB

Product Overview

Category

LM4890MM/NOPB belongs to the category of audio amplifier integrated circuits.

Use

It is used for amplifying audio signals in various electronic devices such as mobile phones, tablets, portable speakers, and other audio applications.

Characteristics

• Low voltage operation
• Low quiescent current
• Minimal external components required
• Thermal shutdown protection
• Short-circuit and thermal protection

Package

The LM4890MM/NOPB comes in a miniature 8-pin surface mount package.

Essence

The essence of LM4890MM/NOPB lies in its ability to provide high-quality audio amplification in a compact and efficient manner.

Packaging/Quantity

The LM4890MM/NOPB is typically available in reels containing 2500 units.

Specifications

• Operating Voltage: 2.7V to 5.5V
• Output Power: 1.1W at 5V, 10% THD+N, 8Ω Load
• Quiescent Current: 4mA
• Shutdown Current: 0.6μA
• Package Type: 8-Pin VSSOP

Detailed Pin Configuration

1. SHUTDOWN (Pin 1) - Shutdown control input
2. IN- (Pin 2) - Negative differential audio input
3. IN+ (Pin 3) - Positive differential audio input
4. GND (Pin 4) - Ground
5. VDD (Pin 5) - Positive power supply
6. BYPASS (Pin 6) - Bypass capacitor connection
7. OUT (Pin 7) - Speaker output
8. VSS (Pin 8) - Negative power supply

Functional Features

• Low voltage operation for portable applications
• Thermal shutdown protection for overtemperature conditions
• Short-circuit and thermal protection for robustness
• Minimal external components required for ease of design

Advantages and Disadvantages

Advantages

• Low power consumption
• Compact package size
• Built-in protection features
• High-quality audio amplification

Disadvantages

• Limited output power compared to higher wattage amplifiers
• Not suitable for high-power audio applications

Working Principles

The LM4890MM/NOPB operates by amplifying the differential audio input signals using internal circuitry and then driving the speaker connected to the output pin. It utilizes low voltage and minimal external components to provide efficient audio amplification while incorporating protection features to ensure reliability.

Detailed Application Field Plans

The LM4890MM/NOPB is well-suited for use in portable electronic devices such as smartphones, tablets, portable speakers, and handheld gaming consoles. Its low voltage operation and compact package make it ideal for space-constrained applications where high-quality audio amplification is required.

Detailed and Complete Alternative Models

Some alternative models to LM4890MM/NOPB include: - LM4863: A higher power audio amplifier with similar features - TPA2012: Another low voltage audio amplifier with integrated protection

In conclusion, the LM4890MM/NOPB is a versatile audio amplifier IC that offers low voltage operation, minimal external component requirements, and built-in protection features. Its compact package and high-quality audio amplification make it suitable for a wide range of portable electronic devices.

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