TLC5920
Versatile LED drivers with I2C bus support for lighting applications
Manufacturer： ['analog-devices', 'ti']
series introduction
# Introduction to the TLC5920 Product Series
## Overview
The TLC5920 product series is a remarkable collection of integrated circuits (ICs) developed by Texas Instruments, a global leader in semiconductor technology. These ICs are specifically designed to address the needs of various lighting and display applications, offering high - performance, flexibility, and ease of use.
## Key Features
### High - Current Sink Capability
One of the standout features of the TLC5920 series is its ability to sink high currents. Each output channel can handle a significant amount of current, which makes it suitable for driving high - brightness LEDs. This high - current capability ensures that the connected LEDs can achieve their maximum brightness levels, making the TLC5920 ideal for applications where vivid and intense lighting is required, such as in large - scale display panels or automotive lighting.
### Multiple Output Channels
The TLC5920 ICs typically come with multiple output channels. This allows for the control of multiple LEDs or LED segments simultaneously. For example, in a multi - color display, each channel can be assigned to a different color LED, enabling precise color mixing and control. The availability of multiple channels also simplifies the design process, as fewer ICs are needed to drive a large number of LEDs, reducing the overall component count and board space.
### Serial Interface
The series utilizes a serial interface for communication. This serial interface provides a convenient and efficient way to control the output channels. It allows for easy integration with microcontrollers or other control devices. By sending simple serial commands, users can adjust the current levels of each output channel, enabling dynamic lighting effects such as fading, blinking, and color cycling. The serial interface also reduces the number of control lines required, further simplifying the circuit design.
### Constant - Current Regulation
The TLC5920 ICs incorporate constant - current regulation technology. This ensures that the current flowing through each LED remains stable, regardless of variations in the supply voltage or the forward voltage of the LEDs. Constant - current regulation is crucial for maintaining the consistent brightness and color of the LEDs over time. It also helps to extend the lifespan of the LEDs by preventing over - current situations, which can cause premature failure.
### Thermal Management
To ensure reliable operation, the TLC5920 series is designed with effective thermal management features. The ICs are packaged in a way that allows for efficient heat dissipation. This is important because excessive heat can degrade the performance of the ICs and reduce the lifespan of the LEDs. By dissipating heat effectively, the TLC5920 series can operate in a wide range of environmental conditions without compromising its performance.
## Applications
### Automotive Lighting
In the automotive industry, the TLC5920 series finds extensive use in various lighting applications. It can be used for interior lighting, such as dashboard illumination and ambient lighting, to create a comfortable and visually appealing driving environment. For exterior lighting, it can drive high - brightness LEDs in headlights, taillights, and turn signals, providing enhanced visibility and safety on the road.
### Display Systems
The TLC5920 series is well - suited for display systems, including LED matrix displays, seven - segment displays, and dot - matrix displays. Its multiple output channels and precise current control capabilities enable the creation of high - resolution and dynamic displays. These displays can be used in information boards, scoreboards, and advertising displays, where clear and eye - catching visuals are essential.
### Signage and Architectural Lighting
For signage applications, the TLC5920 series can drive the LEDs in illuminated signs, ensuring bright and uniform lighting. In architectural lighting, it can be used to create decorative lighting effects in buildings, bridges, and other structures. The ability to control the brightness and color of the LEDs allows for the creation of unique and captivating lighting designs.
## Technical Specifications
### Supply Voltage Range
Images for reference
16-TSSOP
16-VFQFN
16-VQFN,RGY (exposed pad)