LD7830

LD7830 8/17/2012 High Power Factor Flyback LED Controller with HV Start-up REV: 01a General Description The LD7830 is a HV start-up Flyback PFC controller, specially designed for LED lighting appliances. It operates in transition(TM) mode and integrates with complete protections required for safety and therefore it’s an excellent solution to minimize the components counts. Those make it ideal 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 inside this IC, such as over voltage protection (OVP), over current protection (OCP), over load protection (OLP), over temperature protection (OTP), and short circuit protection (SCP), It enable the circuit to meet most safety requirements either in normal and abnormal test. Features  High voltage (600V) startup circuit  High Power Factor Flyback PFC controller  High-efficiency Transition mode operation  Wide UVLO (16Von and 7.5 Voff)  VCC OVP (Over Voltage Protection)  OLP (Over Load Protection)  OCP (Cycle by cycle current limiting) Vcs=0.5V  Internal OTP (Over Temperature Protection)  500/-800mA Driving Capability  Internal OTP function Applications  LED Power Supply  Flyback PFC Power Supply Typical Application LF1 AC Input EMI CF1ilter LED+ LED- VCC HV GATE CS LD7830 COMP ZC...