世微AP5199外置宽电压8-220V 5A 降压恒流DC/DC LED电源驱动芯片

AP5 199

LED Driver

Description

The AP5199 is an average current mode control LED driver IC operating in a constant off-time mode. Unlike AP5160,this control IC does 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 ±3%. The IC is equipped with a current limit comparator for hiccup-mode output short circuit protection. The AP5199 can be powered from an 8.0 - 450V supply. A PWM dimming input is provided that accepts an External control TTL compatible **. The output current can be programmed by an internal 275mV reference, or controlled externally through a 0 - 1.5V dimming input.

特性：

快速平均电流控制

可编程恒定关闭时间开关

线性调光输入

PWM调光输入

具有跳跃模式的输出短路保护

环境工作温度-40至125度

与AP5199兼容引脚

应用：

● DC/DC or AC/DC LED driver applications

● LED backlight driver for LCD displays

● General purpose constant current source

● LED signage and displays

● Architectural and decorative LED lighting

● LED street lighting