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大功率调光IC支持PWM占空比调光线性模拟调光无频闪!

菜鸟
2018-10-12 10:49:12    评分
功率调光IC支持PWM占空比调光线性模拟调光无频闪!AP7158B是以恒定关断时间模式工作的平均电流模式控制LED驱动器IC。 AP7158B不会产生峰均比误差,因此大大提高了LED电流的准确度,线路和负载调整率,而无需进行环路补偿或高端电流检测。输出LED电流精度为±2%。AP7158B可由8.0 - 100V电源供电。提供PWM调光输入,可接受外部控制TTL兼容信号。输出电流可由内部250mV基准电压源进行编程,或通过0.2 - 1.5V调光输入进行外部控制。特征快速平均电流控制内部8至100V线性稳压器线性和PWM调光功能跳过模式输出短路保护需要很少的外部元件进行操作应用

DC/ DC LED驱动器

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应用LED路灯平板显示器的背光照明通用恒流源标志和装饰LED照明景观灯驱动IC   植物生长灯驱动IC联系曾生:13410492646  QQ:3004825478可提供IC测试板和配套方案。

大功率调光IC支持PWM占空比调光线性模拟调光无频闪!


General Description


The AP5169Bis an average current mode control LED driver IC operating in a constant off-time mode. AP5169Bdoes not produce a peak-to-average error, and therefore greatly improves accuracy, line and load regulation of the LED current without any need for loop compensation or high-side current sensing. The output LED current accuracy is ±2%.


The AP5169Bcan be powered from an 8.0 - 100V supply. A PWM dimming input is provided that accepts an external control TTL compatible signal. The output current can be programmed by an internal 250mV reference, or controlled externally through a 0.2 – 1.5V dimming input.


FeaturesØ Fast average current control


Ø Internal 8 to 100V linear regulator


Ø Linear and PWM dimming capability


Ø Output short circuit protection with skip mode


Ø Requires few external components for operation


ApplicationsØ DC/DC LED driver applications


Ø LED street lighting


Ø Back lighting of flat panel displays


Ø General purpose constant current source


Ø Signage and decorative LED lighting


Ø Chargers


联系曾生:13410492646  QQ:3004825478可提供IC测试板和配套方案。





关键词: 大功率     调光     支持     占空     线性     模拟     无频    

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