LM4890ITP/NOPB

Product Overview

Category

LM4890ITP/NOPB belongs to the category of audio power amplifiers.

Use

It is used to amplify audio signals and drive speakers in various electronic devices such as mobile phones, tablets, and portable media players.

Characteristics

• Low voltage operation
• Low quiescent current
• Minimal external components required
• Thermal shutdown protection

Package

The LM4890ITP/NOPB comes in a 14-pin TSSOP package.

Essence

The essence of LM4890ITP/NOPB lies in its ability to provide high-quality audio amplification in a compact and efficient package.

Packaging/Quantity

The LM4890ITP/NOPB is typically available in reels with a quantity of 2500 units per reel.

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: 14-Pin TSSOP

Detailed Pin Configuration

1. SHUTDOWN - Logic input for shutdown mode
2. VDD - Positive supply voltage
3. BYPASS - Bypass pin for internal charge pump
4. IN- - Negative differential audio input
5. IN+ - Positive differential audio input
6. GND - Ground
7. VOUT - Amplifier output
8. VEE - Negative supply voltage
9. BYPASS - Bypass pin for internal charge pump
10. BYPASS - Bypass pin for internal charge pump
11. BYPASS - Bypass pin for internal charge pump
12. BYPASS - Bypass pin for internal charge pump
13. BYPASS - Bypass pin for internal charge pump
14. SHUTDOWN - Logic input for shutdown mode

Functional Features

• Single-ended or differential input
• Thermal shutdown protection
• Short-circuit and thermal overload protection
• Low quiescent current

Advantages and Disadvantages

Advantages

• Low voltage operation allows for use in battery-powered devices
• Minimal external components simplify design and reduce cost
• Thermal shutdown protection ensures device safety

Disadvantages

• Limited output power compared to higher wattage amplifiers
• May require additional heat dissipation mechanisms in high-power applications

Working Principles

The LM4890ITP/NOPB operates by amplifying the input audio signal using an internal amplifier circuit. It can accept single-ended or differential input signals and provides thermal shutdown and short-circuit protection to ensure safe operation.

Detailed Application Field Plans

The LM4890ITP/NOPB is well-suited for use in portable electronic devices such as smartphones, tablets, portable media players, and other battery-powered applications where high-quality audio amplification is required.

Detailed and Complete Alternative Models

• LM4863: 1.1W Audio Power Amplifier with Shutdown Mode
• LM4871: 1W Audio Power Amplifier with Shutdown Mode
• LM4881: 1W Audio Power Amplifier with Shutdown Mode

In conclusion, the LM4890ITP/NOPB is a versatile audio power amplifier suitable for low-voltage, battery-powered applications requiring high-quality audio amplification. Its compact package, low quiescent current, and built-in protection features make it an ideal choice for portable electronic devices. While it may have limitations in terms of output power, its advantages outweigh the disadvantages in many consumer electronics applications.