16位恒流LED驱动器的设计

2010 International Conference on Anti-Counterfeiting, Security and Identification Pub Date : 2010-07-18 DOI:10.1109/ICASID.2010.5551839

Yi Wang, Mingkun Gao, Donghui Guo

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引用次数: 10

摘要

本文介绍了一种16位恒流LED驱动集成电路(简称“驱动器”)。采用0.6-µm 2P3M CMOS工艺，在0.9mm × 0.9mm的有源面积上制作而成。驱动器提供16个开漏恒流下沉LED驱动器输出。所有的恒流输出由一个信号外部电阻一起编程。后置仿真结果表明，在−40°C至125°C的温度范围和3V至5.5V的电源范围内，每个输出通道可提供高达70mA的恒定电流。每个比特之间的电流匹配度为3%，每个技术角之间的电流匹配度通常小于6%。更重要的是，它包括上电复位和过热保护电路，有助于保护IC免受逻辑错误和烧毁。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Design of 16-bits constant-current LED driver

A 16-bits Constant-Current LED Driver Integrated Circuit (abbreviated as “Driver”) is presented in this paper. It is fabricated with 0.6-µm 2P3M CMOS process in an active area of 0.9mm × 0.9mm. The driver provides 16 open-drain, constant current sinking LED driver outputs. All the constant-current outputs are programmed together by a signal external resistor. Post simulation result shows that each output channel provides constant current up to 70mA within possible temperature range of −40°C to 125°C and power supply range of 3V to 5.5V. The current match between each bit is 3% and between each technical corner is less than 6% typically. More importantly, it includes the power-on reset and over-heating protection circuits, which help protect the IC against logic error and burnt up.

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2010 International Conference on Anti-Counterfeiting, Security and Identification

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