AS1122-BQFM

Product Overview

Category

AS1122-BQFM belongs to the category of integrated circuits (ICs).

Use

AS1122-BQFM is commonly used in electronic devices for controlling and driving LED displays.

Characteristics

• AS1122-BQFM is a highly efficient LED driver IC.
• It supports multiplexing of LED segments, enabling control of multiple LEDs simultaneously.
• The IC offers excellent brightness control and uniformity across the display.
• It operates at low power consumption, making it suitable for battery-powered devices.
• AS1122-BQFM has built-in protection features to prevent damage from overvoltage and overtemperature conditions.

Package

AS1122-BQFM is available in a compact surface-mount package.

Essence

The essence of AS1122-BQFM lies in its ability to efficiently drive and control LED displays, providing accurate and reliable performance.

Packaging/Quantity

AS1122-BQFM is typically packaged in reels or tubes, with varying quantities depending on the manufacturer's specifications.

Specifications

• Supply Voltage: 2.7V - 5.5V
• Maximum Output Current: 25mA per segment
• Number of Segments: Up to 32
• Communication Interface: I2C
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

AS1122-BQFM features the following pin configuration:

1. VDD: Power supply voltage input
2. GND: Ground reference
3. SDA: Serial data input/output for I2C communication
4. SCL: Serial clock input for I2C communication
5. SEGx: Segment outputs for LED control
6. COMx: Common cathode outputs for LED control

Functional Features

• Multiplexing: AS1122-BQFM supports multiplexing of LED segments, reducing the number of required pins and simplifying circuit design.
• Brightness Control: The IC offers precise brightness control for each LED segment, ensuring uniform illumination across the display.
• Error Detection: AS1122-BQFM incorporates error detection mechanisms to identify and handle faulty LED segments.
• Low Power Consumption: The IC operates at low power levels, making it suitable for energy-efficient applications.

Advantages and Disadvantages

Advantages

• Efficient LED driving with multiplexing capability
• Accurate brightness control and uniformity
• Built-in protection features
• Low power consumption

Disadvantages

• Limited maximum output current per segment (25mA)

Working Principles

AS1122-BQFM utilizes an I2C interface to receive control signals and data from a microcontroller. It then processes the received information to drive the connected LED segments. The IC employs multiplexing techniques to control multiple LEDs simultaneously, achieving efficient operation and reducing pin count.

Detailed Application Field Plans

AS1122-BQFM finds applications in various electronic devices that require LED displays, including: - Consumer electronics (e.g., smartphones, tablets) - Automotive instrument clusters - Industrial control panels - Medical equipment - Home appliances

Detailed and Complete Alternative Models

Some alternative models to AS1122-BQFM include: - AS1115-BQFT: Similar LED driver IC with additional features like key scanning and keypad control. - MAX7219: LED driver IC with cascading capabilities, suitable for larger display arrays. - TLC5940: High-current LED driver IC with grayscale control for advanced lighting effects.

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