UL82C中文资料NON ISOLATED BUCK CONSTANT CURRENT LED DRIVER IC数据手册UTC规格书

描述 Description

UL82C is a high precision LED BUCK constant current driverchip. The chip operates in the inductor current critical continuousmode, which is suitable for the non isolated buck LED constantcurrent power supply with 85Vac~265Vac full range input voltage.UL82C chip integrated 500V power switch by patentdemagnetization detection technology and high voltage powersupply technology, without detection and power supply for auxiliarywinding, the peripheral devices are more simple, saving the costand volume of the system.UL82C chip with high precision current sampling circuit, whilethe use of patented constant current control technology to achievehigh accuracy of the LED constant current output and excellent linevoltage regulator. The chip operates in the critical mode of inductorcurrent and the output current is not changed with the increase ofthe inductance and the working voltage of LED.UL82C has a variety of protection

特性 Features

, including LED shortcircuit protection, under voltage protection, over temperatureadjustment function and so on. FEATURES The integrated 500V power mos. The integrated high voltage power supply function. The inductor current critical continuous mode. Without auxiliary winding detection and power supply. The wide voltage input voltage. ±5% LED output current accuracy. The LED short circuit and open circuit protection. The chip power supply under voltage protection. The regulating function of overheating