Infineon ILD4035 1W LED驱动解决方案

Infineon 公司的ILD4035是大功率LED驱动器,驱动电流高达350mA,输出电流可用外接电阻调整,输入电压4.5V-42V,具有过流和过压保护,LED开路保护,软起动,模拟电压和PWM调光,工作电压范围内关断电流小于100nA,输出电流精度3%,整个温度范文LED电流漂移非常低,主要应用在通用照明的LED驱动器,室内照明和住宅区照明,办公室照明以及建筑物照明.本文介绍了ILD4035主要特性,方框图, 应用电路图, 评估板电路图和评估板材料清单.

The ILD4035 is a hysteretic Step down LED converter IC for general lighting applications, which is capable to drive high power LEDs with currents up to 350 mA.

The IC incorporates a wide input voltage range and an internal power switch. The output current level can be adjusted with an external sense resistor.

According to the multifunctional control pin the IC can be switched on and off by an external signal, which is also suitable to regulate brightness of the LEDs by PWM or analog voltage dimming.

Depending on the value of the switching inductor the switching frequency and the voltage ripple can be set. The precise internal bandgap stabilizes the circuit and provides stable current conditions over temperature range.

To ensure a long lifetime of the LED system, the ILD4035 incorporates an overvoltage and an overcurrent protection.
..

查看全文