[电子相关] 大功率调光IC支持PWM占空比调光线性模拟调光无频闪!

[复制链接]

签到天数: 13 天

连续签到: 4 天

[LV.3]③大理平民

发表于 5 天前 | 显示全部楼层 |阅读模式
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
选型表1.png
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。

1523956922-39956.png 1523956938-67795.png
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.

Features
Ø 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

Applications
Ø 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。

发表回复

您需要登录后才可以回帖 登录 | 注册一灯

本版积分规则

关闭

站长推荐 上一条 /1 下一条

返回顶部快速回复上一主题下一主题返回列表调戏客服手机访问
快速回复 返回顶部 返回列表