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AS1112B-BQFT
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AS1112B-BQFT

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: LED Driver
  • Characteristics: High precision, low power consumption
  • Package: QFN (Quad Flat No-Lead)
  • Essence: Control and drive LEDs efficiently
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Input Voltage Range: 2.7V to 5.5V
  • Output Current Range: 5mA to 40mA
  • Number of Channels: 8
  • Communication Interface: I2C
  • Dimming Control: PWM (Pulse Width Modulation)
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The AS1112B-BQFT has a total of 24 pins. The pin configuration is as follows:

  1. VDD: Power supply voltage
  2. GND: Ground
  3. SDA: Serial Data Line (I2C)
  4. SCL: Serial Clock Line (I2C)
  5. INT: Interrupt output
  6. OUT0: LED channel 0 output
  7. OUT1: LED channel 1 output
  8. OUT2: LED channel 2 output
  9. OUT3: LED channel 3 output
  10. OUT4: LED channel 4 output
  11. OUT5: LED channel 5 output
  12. OUT6: LED channel 6 output
  13. OUT7: LED channel 7 output
  14. REXT: External resistor for current setting
  15. NC: Not connected
  16. NC: Not connected
  17. NC: Not connected
  18. NC: Not connected
  19. NC: Not connected
  20. NC: Not connected
  21. NC: Not connected
  22. NC: Not connected
  23. NC: Not connected
  24. NC: Not connected

Functional Features

  • Precise current control for each LED channel
  • Individual PWM dimming control for each channel
  • Internal oscillator for PWM generation
  • Low power consumption in standby mode
  • Built-in thermal shutdown protection

Advantages and Disadvantages

Advantages

  • High precision LED current control
  • Efficient PWM dimming capability
  • Compact QFN package for space-constrained applications
  • Wide input voltage range allows flexibility in power supply selection

Disadvantages

  • Limited number of channels (8)
  • Requires external resistor for current setting

Working Principles

The AS1112B-BQFT is designed to control and drive LEDs efficiently. It utilizes an internal oscillator to generate PWM signals, which are used to control the brightness of individual LED channels. The IC provides precise current control for each channel, ensuring consistent and accurate illumination.

The device communicates with a microcontroller or other host device through the I2C interface, allowing for easy integration into various systems. The AS1112B-BQFT also features built-in thermal shutdown protection, which safeguards the IC and LEDs from overheating.

Detailed Application Field Plans

The AS1112B-BQFT is suitable for a wide range of applications, including:

  1. LED displays and signage
  2. Backlighting for LCD panels
  3. Automotive interior lighting
  4. Portable electronic devices
  5. Industrial control panels
  6. Medical equipment

Detailed and Complete Alternative Models

  1. AS1113B-BQFT: Similar to AS1112B-BQFT but with 16 channels instead of 8.
  2. AS1114B-BQFT: Similar to AS1112B-BQFT but with 12 channels instead of 8.
  3. AS1115B-BQFT: Similar to AS1112B-BQFT but with 24 channels instead of 8.

These alternative models offer expanded channel options for applications that require more LED control.

In conclusion, the AS1112B-BQFT is a high-precision LED driver IC with efficient PWM dimming control. Its compact package and wide input voltage range make it suitable for various applications. While it has a limited number of channels, alternative models are available to cater to different requirements.

Luettele 10 yleistä kysymystä ja vastausta, jotka liittyvät AS1112B-BQFT :n soveltamiseen teknisissä ratkaisuissa

Sure! Here are 10 common questions and answers related to the application of AS1112B-BQFT in technical solutions:

  1. Question: What is AS1112B-BQFT?
    Answer: AS1112B-BQFT is a specific model of LED driver IC (Integrated Circuit) designed for controlling and driving LED displays.

  2. Question: What is the purpose of AS1112B-BQFT?
    Answer: The purpose of AS1112B-BQFT is to provide a compact and efficient solution for driving LED displays, enabling control over individual LEDs or groups of LEDs.

  3. Question: What types of LED displays can AS1112B-BQFT be used with?
    Answer: AS1112B-BQFT can be used with various types of LED displays, including alphanumeric displays, dot matrix displays, and segment displays.

  4. Question: How many LEDs can AS1112B-BQFT control?
    Answer: AS1112B-BQFT can control up to 144 LEDs, making it suitable for small to medium-sized LED display applications.

  5. Question: What communication interface does AS1112B-BQFT support?
    Answer: AS1112B-BQFT supports the I2C (Inter-Integrated Circuit) communication interface, allowing easy integration with microcontrollers or other devices.

  6. Question: Can AS1112B-BQFT dim or adjust the brightness of LEDs?
    Answer: Yes, AS1112B-BQFT provides built-in features for dimming and adjusting the brightness of LEDs, offering flexibility in display design.

  7. Question: Does AS1112B-BQFT have any power-saving features?
    Answer: Yes, AS1112B-BQFT includes power-saving features such as automatic shutdown and low-power standby mode, helping to conserve energy.

  8. Question: Can AS1112B-BQFT handle multiplexing of LEDs?
    Answer: Yes, AS1112B-BQFT supports multiplexing, allowing efficient control of multiple LEDs using fewer pins and reducing overall system complexity.

  9. Question: Is AS1112B-BQFT suitable for battery-powered applications?
    Answer: Yes, AS1112B-BQFT is designed to operate with low power consumption, making it well-suited for battery-powered applications where energy efficiency is crucial.

  10. Question: Are there any application examples where AS1112B-BQFT is commonly used?
    Answer: Yes, AS1112B-BQFT is commonly used in applications such as digital clocks, panel meters, portable instruments, and other devices requiring LED display control.

Please note that the answers provided here are general and may vary depending on specific implementation details and requirements.