General Description
The LD7592S is a voltage mode PFC controller operating
on transition mode, with several integrated functions of
protection, such as OVP, OCP, and brown-in protection. It
reduces the components counts and is available in a
SOP-8 or DIP-8 package. Those make it an ideal design
for low cost applications.
It provides functions of low startup current, over voltage
protection, open feedback protection, disable function,
over current protection, under voltage lockout and
integrated LEB of current sensing. The LD7592S adopts
transition mode for power factor correction and realizes
high efficiency and a low switching noise by zero current
switching.

Features
 Transition Mode of PFC Pre-Regulator
 Voltage Mode Control
 Programmable Maximum on-time
 ZCD Auxiliary Winding is Unnecessary
 Low Startup Current (<1A)
 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 Limit)
 900/-1200mA Driving Capability
 Internal OTP (Over Temperature Protection)

Applications
 Adaptor of Output above 75W.
 LCD TV Power Supply