ON Semiconductor
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LA4450-E
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LA4450-E

Product Overview

Category: Integrated Circuit (IC)

Use: Audio Power Amplifier

Characteristics: - High output power - Low distortion - Wide operating voltage range - Compact package size - Suitable for audio applications

Package: Dual in-line package (DIP)

Essence: LA4450-E is a high-performance audio power amplifier IC designed for various audio applications.

Packaging/Quantity: Available in reels of 2,500 units per reel.

Specifications

  • Operating Voltage Range: 5V to 15V
  • Output Power: 5W x 2 channels (at 10% THD)
  • Total Harmonic Distortion: 0.1% (at 1kHz, 1W)
  • Frequency Response: 20Hz to 20kHz
  • Standby Current: 5mA (typical)
  • Package Dimensions: 9.8mm x 6.4mm x 3.2mm

Detailed Pin Configuration

The LA4450-E IC has the following pin configuration:

  1. VCC - Power supply positive terminal
  2. IN1 - Input 1
  3. GND - Ground
  4. IN2 - Input 2
  5. OUT1 - Output 1
  6. OUT2 - Output 2
  7. Bypass - Bypass capacitor connection terminal
  8. MUTE - Mute control terminal

Functional Features

  • Built-in thermal shutdown circuitry for protection against overheating
  • Built-in standby function for power-saving operation
  • Excellent channel separation
  • Low noise and low distortion
  • Easy to use and integrate into audio systems

Advantages and Disadvantages

Advantages: - High output power allows for driving speakers with sufficient volume - Low distortion ensures high-quality audio reproduction - Wide operating voltage range provides flexibility in power supply options - Compact package size enables space-saving designs - Suitable for various audio applications

Disadvantages: - May require additional external components for optimal performance - Limited output power compared to higher wattage amplifiers

Working Principles

The LA4450-E is a class AB audio power amplifier that amplifies low-level audio signals to drive speakers. It operates by receiving input audio signals through the IN1 and IN2 pins, amplifying them, and delivering the amplified signals to the OUT1 and OUT2 pins. The built-in thermal shutdown circuitry protects the IC from overheating, while the standby function allows for power-saving operation when no audio signal is present.

Detailed Application Field Plans

The LA4450-E is commonly used in various audio applications, including: - Portable audio devices - Home audio systems - Car audio systems - Multimedia speakers - Amplifiers for musical instruments

Detailed and Complete Alternative Models

Some alternative models to the LA4450-E include: - TDA7265 - Audio Power Amplifier IC with similar specifications - LM386 - Low Voltage Audio Power Amplifier IC - TPA3116D2 - Class D Audio Amplifier IC with higher output power

These alternative models offer different features and specifications, providing options for specific application requirements.

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Liste 10 almindelige spørgsmål og svar relateret til anvendelsen af LA4450-E i tekniske løsninger

Sure! Here are 10 common questions and answers related to the application of LA4450-E in technical solutions:

  1. Q: What is LA4450-E? A: LA4450-E is a dual-channel audio power amplifier IC commonly used in various technical solutions.

  2. Q: What is the maximum output power of LA4450-E? A: The maximum output power of LA4450-E is typically around 5 watts per channel.

  3. Q: What is the operating voltage range for LA4450-E? A: The operating voltage range for LA4450-E is usually between 6V and 18V.

  4. Q: Can LA4450-E be used in stereo applications? A: Yes, LA4450-E is designed for stereo applications and can drive two separate channels simultaneously.

  5. Q: Is LA4450-E suitable for battery-powered devices? A: Yes, LA4450-E can be used in battery-powered devices as it operates within a wide voltage range and has low power consumption.

  6. Q: Does LA4450-E require external components for operation? A: Yes, LA4450-E requires external components such as resistors, capacitors, and input/output coupling capacitors for proper operation.

  7. Q: Can LA4450-E handle low-impedance speakers? A: Yes, LA4450-E is capable of driving low-impedance speakers down to 4 ohms.

  8. Q: What is the typical total harmonic distortion (THD) of LA4450-E? A: The typical THD of LA4450-E is around 0.08% at 1 kHz and 1 watt output.

  9. Q: Can LA4450-E be used in automotive audio systems? A: Yes, LA4450-E is suitable for automotive audio systems as it can handle the voltage fluctuations commonly found in vehicles.

  10. Q: Are there any recommended application circuits available for LA4450-E? A: Yes, the datasheet of LA4450-E provides several recommended application circuits that can be used as a reference for different technical solutions.

Please note that the answers provided here are general and may vary depending on specific implementation and requirements. It is always recommended to refer to the datasheet and consult with an expert for accurate information.