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:

VDD: Power supply voltage
GND: Ground
SDA: Serial Data Line (I2C)
SCL: Serial Clock Line (I2C)
INT: Interrupt output
OUT0: LED channel 0 output
OUT1: LED channel 1 output
OUT2: LED channel 2 output
OUT3: LED channel 3 output
OUT4: LED channel 4 output
OUT5: LED channel 5 output
OUT6: LED channel 6 output
OUT7: LED channel 7 output
REXT: External resistor for current setting
NC: Not connected
NC: Not connected
NC: Not connected
NC: Not connected
NC: Not connected
NC: Not connected
NC: Not connected
NC: Not connected
NC: Not connected
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:

LED displays and signage
Backlighting for LCD panels
Automotive interior lighting
Portable electronic devices
Industrial control panels
Medical equipment

Detailed and Complete Alternative Models

AS1113B-BQFT: Similar to AS1112B-BQFT but with 16 channels instead of 8.
AS1114B-BQFT: Similar to AS1112B-BQFT but with 12 channels instead of 8.
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.

Перелічіть 10 типових запитань і відповідей, пов’язаних із застосуванням AS1112B-BQFT у технічних рішеннях

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

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.
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.
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.
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.
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.
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.
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.
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.
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.
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.