ILD6070参考设计电路|直流/直流LED驱动器应用电路

ILD6070直流/直流LED驱动器集成电路支持从700mA到1500mA的电流，使其成为一般照明应用中高功率及超高功率LED的理想选择。此篇主要介绍了ILD6070特性、应用范围、参考设计电路以及电路分析，帮助大家缩短设计时间。

ILD6070特性：从4.5到60V的宽幅可用输入电压；提供PWM或模拟两种调光选择；效率高达98%；无需外部NTC或PTC；高级热保护

ILD6070典型应用范围：一般照明用LED驱动器；零售、办公和住宅筒灯；街道和隧道照明；LED镇流器

ILD6070参考设计应用电路：

图1ILD6070内部结构图

The ILD6070 is suitable for LED applications with a wide range of supply voltages from 4.5 V to 60 V. A multifunctional PWM input signal allows dimming of the LEDs with an analog DC voltage or an external PWM signal. To minimize colorshifts of the LEDs an analog PWM voltage is converted to an internal 1.6 kHz PWM signal modulating the LED current.

图2ILD6070参考设计图

The ILD6070 incorporates an undervoltage lock-out that will shut down the IC when the minimum supply voltage threshold is xceeded. The over-current protection turns off the output stage once the output current is above the current threshold. An integrated over-temperature protection circuit will start to reduce the LED current by internal PWM modulation once the adjustable junction temperature threshold of the IC is exceeded. Realizing a thermal coupling between LED driver IC and LEDs this feature eliminates the need of external temperature senors as NTCs or PTCs.

ILD6070中文数据手册:点击下载

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