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LM4890IBL
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LM4890IBL

Product Overview

Category

LM4890IBL belongs to the category of audio power amplifiers.

Use

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

Characteristics

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

Package

The LM4890IBL comes in a small 8-pin surface mount package.

Essence

The essence of LM4890IBL lies in its ability to provide high-quality audio amplification in a compact and efficient manner.

Packaging/Quantity

The LM4890IBL is typically available in reels containing a specific quantity, usually around 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: 8-Pin Surface Mount

Detailed Pin Configuration

  1. SHUTDOWN (SD)
  2. INPUT
  3. GND
  4. VDD
  5. BYPASS
  6. OUTPUT
  7. GAIN
  8. GND

Functional Features

  • Low voltage operation for battery-powered systems
  • Thermal shutdown protection for overtemperature conditions
  • Minimal external components required for a complete amplifier solution
  • Shutdown mode for power savings during idle periods

Advantages and Disadvantages

Advantages

  • Low power consumption
  • Small form factor
  • Thermal shutdown protection
  • Easy to use with minimal external components

Disadvantages

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

Working Principles

The LM4890IBL operates by amplifying the input audio signal using an internal amplifier circuit. It is designed to operate efficiently at low voltages while providing adequate power for driving speakers or headphones.

Detailed Application Field Plans

The LM4890IBL is well-suited for use in portable electronic devices where space and power efficiency are crucial. It can be integrated into mobile phones, portable media players, handheld gaming devices, and other similar products.

Detailed and Complete Alternative Models

Some alternative models to LM4890IBL include: - LM4863 - LM4871 - LM4881

These alternatives offer similar functionality and features, providing options for designers based on specific project requirements.

In conclusion, the LM4890IBL is a versatile audio power amplifier that offers efficient amplification in a compact package, making it ideal for a wide range of portable electronic devices.

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Liste 10 almindelige spørgsmål og svar relateret til anvendelsen af LM4890IBL i tekniske løsninger

  1. What is the LM4890IBL?

    • The LM4890IBL is a mono, bridge-tied load (BTL) audio power amplifier with DC volume control.

  2. What is the typical application of the LM4890IBL?

    • The LM4890IBL is commonly used in portable audio devices, such as smartphones, tablets, and portable speakers.

  3. What is the maximum output power of the LM4890IBL?

    • The LM4890IBL can deliver up to 1.1W of continuous average power into an 8Ω BTL load with 10% THD+N.

  4. What is the supply voltage range for the LM4890IBL?

    • The LM4890IBL operates from a single 5V supply, making it suitable for battery-powered applications.

  5. Does the LM4890IBL require external components for operation?

    • Yes, the LM4890IBL requires a few external components, including input and output coupling capacitors, feedback components, and a bypass capacitor.

  6. What is the typical quiescent current of the LM4890IBL?

    • The typical quiescent current of the LM4890IBL is around 4.5mA, making it suitable for low-power applications.

  7. Can the LM4890IBL handle short-circuit conditions?

    • Yes, the LM4890IBL has built-in protection circuitry to handle short-circuit conditions on the outputs.

  8. What is the recommended layout for the LM4890IBL?

    • A good layout practice for the LM4890IBL includes keeping input and output traces short, using proper ground connections, and minimizing loop area.

  9. What is the thermal shutdown temperature of the LM4890IBL?

    • The LM4890IBL features a thermal shutdown protection at approximately 150°C to prevent overheating.

  10. Is the LM4890IBL available in different package options?

    • Yes, the LM4890IBL is available in a small 8-pin MSOP package, making it suitable for space-constrained designs.