HVLED807PF中文资料Off-line LED driver with primary-sensing and high power factor up to 7W数据手册ST规格书

描述 Description

The HVLED807PF is a high-voltage primary switcher intended for operating directly from the rectified mains with minimum external parts and enabling high power factor (> 0.90) to provide an efficient, compact and cost effective solution for LED driving. It combines a high-performance low-voltage PWM controller chip and an 800 V, avalanche-rugged Power MOSFET, in the same package. There is no need for the optocoupler thanks to the patented primary sensing regulation (PSR) technique. The device assures protection against LED string fault (open or short).

特性 Features

• High power factor capability (> 0.9)
• 800 V, avalanche rugged internal 11 Ω power MOSFET
• Internal high-voltage startup
• Primary sensing regulation (PSR)
• +/- 5% accuracy on constant LED output current
• Quasi-resonant (QR) operation
• Optocoupler not needed
• Open or short LED string management
• Automatic self supply

简介

HVLED807PF属于集成电路（IC）的LED驱动器。由制造生产的HVLED807PFLED 驱动器器件属于 LED 驱动器电源管理集成电路 (PMIC) 系列，可通过标称固定电压的电源为负载（通常为发光二极管）提供电流，并且电流可控。它与用于电压调节的类似产品的主要区别在于，这类器件提供较低的反馈电压（以提高系统能效），而且通常可对器件工作点进行外部控制，可在照明应用中用于实现调光功能。