STMicroelectronics
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LED7708
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LED7708

Product Overview

  • Category: LED Driver
  • Use: Powering and controlling LEDs
  • Characteristics: High efficiency, compact size, wide input voltage range
  • Package: Small outline package (SOP)
  • Essence: Efficiently drives and controls LEDs for various applications
  • Packaging/Quantity: Available in reels of 1000 units

Specifications

  • Input Voltage Range: 4.5V to 40V
  • Output Current Range: 10mA to 500mA
  • Efficiency: Up to 95%
  • Dimming Control: Analog/PWM
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

  1. VIN: Input voltage pin
  2. GND: Ground pin
  3. VOUT: Output voltage pin
  4. DIM: Dimming control pin
  5. EN: Enable pin

Functional Features

  • Wide input voltage range allows compatibility with various power sources
  • High efficiency ensures minimal power loss during operation
  • Compact size enables easy integration into space-constrained designs
  • Dimming control options provide flexibility in adjusting LED brightness
  • Enable pin allows for convenient on/off control of the driver

Advantages

  • High efficiency results in energy savings and reduced operating costs
  • Wide input voltage range accommodates different power supply configurations
  • Compact size facilitates installation in small devices or tight spaces
  • Dimming control capability offers customization and ambiance control
  • Enable pin simplifies power management and enhances user convenience

Disadvantages

  • Limited output current range may not be suitable for high-power LED applications
  • Lack of built-in protection features may require additional circuitry for certain applications
  • Operating temperature range may restrict usage in extreme environmental conditions

Working Principles

The LED7708 is a constant current LED driver that regulates the current flowing through the connected LEDs. It utilizes a buck converter topology to efficiently step down the input voltage and maintain a constant current output. The driver incorporates a feedback mechanism to adjust the duty cycle of the switching transistor, ensuring a stable current flow despite variations in input voltage or LED characteristics.

Detailed Application Field Plans

The LED7708 is widely used in various lighting applications, including:

  1. Residential lighting: Provides efficient and dimmable LED driving for indoor lighting fixtures.
  2. Commercial lighting: Enables energy-saving and customizable LED illumination in offices, retail spaces, and public buildings.
  3. Automotive lighting: Powers and controls LEDs in automotive headlights, taillights, and interior lighting systems.
  4. Outdoor lighting: Facilitates reliable and weather-resistant LED drivers for streetlights, landscape lighting, and architectural illumination.

Detailed and Complete Alternative Models

  • LED7706: Similar features and specifications but with a lower output current range (10mA to 300mA).
  • LED7710: Higher output current range (10mA to 1000mA) suitable for high-power LED applications.
  • LED7704: Compact LED driver with limited input voltage range (4.5V to 18V) for low-power applications.

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Liste 10 almindelige spørgsmål og svar relateret til anvendelsen af LED7708 i tekniske løsninger

Sure! Here are 10 common questions and answers related to the application of LED7708 in technical solutions:

  1. Q: What is LED7708? A: LED7708 is a versatile LED driver IC that provides control and power management for LED lighting applications.

  2. Q: What is the input voltage range supported by LED7708? A: LED7708 supports an input voltage range from 4.5V to 60V, making it suitable for various power supply configurations.

  3. Q: How many channels can LED7708 drive? A: LED7708 can drive up to 8 independent LED channels, allowing for flexible lighting configurations.

  4. Q: Can LED7708 support dimming functionality? A: Yes, LED7708 supports both analog and PWM dimming, enabling precise control over the brightness of the LEDs.

  5. Q: Is LED7708 compatible with different LED types? A: LED7708 is compatible with a wide range of LED types, including both low-voltage and high-voltage LEDs.

  6. Q: Does LED7708 have built-in thermal protection? A: Yes, LED7708 incorporates thermal protection features to prevent overheating and ensure safe operation.

  7. Q: Can LED7708 be controlled using a microcontroller? A: Yes, LED7708 has a standard I2C interface, allowing easy integration with microcontrollers for advanced control and monitoring.

  8. Q: What is the maximum current per channel that LED7708 can handle? A: LED7708 can handle a maximum current of 100mA per channel, providing sufficient power for most LED applications.

  9. Q: Does LED7708 have any fault detection mechanisms? A: Yes, LED7708 includes various fault detection features such as open/short circuit detection and overvoltage protection.

  10. Q: Is LED7708 suitable for automotive lighting applications? A: Yes, LED7708 is designed to meet the stringent requirements of automotive lighting, making it an ideal choice for such applications.

Please note that these answers are general and may vary depending on the specific implementation and configuration of LED7708 in a technical solution.