LD7831中文资料LED 应用产品 : AC/DC LED照明控制器/驱动器数据手册Leadtrend规格书

描述 Description

The LD7831 is a high power factor primary side Flyback LED controller with HV start-up, specially designed for LED lighting.The LD7831 provides constant current (CC) operation requiring neither photo-coupler nor secondary control circuit. It minimizes the components counts in a SOP-7. Those make it easy to design for cost- effective applications.With HV start-up technology, high power factor and TM control, the start-up time and resistor loss could be minimized efficiently.The circuit can easily achieve PF>0.90 to meet most of the international standard requirements.With completed protection built in this IC, such as over voltage protection (OVP), over current protection (OCP) and short circuit protection (SCP), the device is capable to meet the safety requirements.

特性 Features

·High Voltage (700V) Startup Circuit
·High Power Factor Flyback Primary Side PFC Controller
·High Efficiency Transition Mode Operation
·28V VCC OVP (VCC Over Voltage Protection)
·OCP (Cycle by Cycle Current Limiting)
·SCP (Output Short Protection)
·OTP (Over Temperature Protection)
·CS Short Protection
·Adjustable Output OVP
·250/-500mA Driving Capability
·Internal OTP Function

应用 Application

·LED Power Supply
·LED Light Bulb/Tube