Transition-Mode PFC Controller with Fault Condition Protection
The LD7592 is a voltage mode PFC controller operating on transition mode, with several integrated functions, such as OVP, OCP, and brown-in protection.
It reduces the components counts and is an ideal solution for cost effective applications.
The IC provides functions of low start up current, over voltage protection, open feedback protection, disable funtion, over current protection,
under voltage lockout and integrated LEB of current sensing.
The LD7592 adopts transition mode for power factor correction and realizes high efficiency and low switching noise by zero current switching.
The IC is available in SMD or THT. LD7592 GS in SOP-8 and LD7592 GN in DIP-8 package.
FEATURES
▲ Transistion mode of PFC pre-regulator
▲ Voltage mode control
▲ Programmable max. on-time
▲ ZCD Auxiliary winding is unnecessary
▲ Low startup current (< 1mA)
▲ UVLO (Under Voltage Lockout)
▲ LEB (Leading-Edge Blanking) on CS pin
▲ VCC OVP (Over Voltage Protection) on VCC pin
▲ VO OVP (Over Voltage Protection) on INV pin
▲ Bulk cap OVP (Over Voltage Protection) on OVP pin
▲ OCP (Cycle by cycle current limiting)
▲ 900/-1200mA driving capability
▲ Internal OTP (Over Temperature Protection)
APPLICATIONS
▲ 75W adaptor
▲ Open frame switching power supply
▲ LCD TV power supply
▲ LED power supply
Datasheet 
