General Description
The LD7752 brings high performance, highly integrated
functions, protections and EMI-improve solution. It’s an
ideal solution for those cost-sensitive system, reducing
component count and overall system cost.
The LD7752 features high voltage startup circuit,
minimum loss and green-mode power-saving operation,
leading-edge blanking of the current sensing and internal
slope compensation. They also consist of more
protections of OLP (Over Load Protection) and OVP (Over
Voltage Protection) to prevent the circuit from damage
under abnormal conditions.
Furthermore, the proprietary frequency swapping function
can reduce the noise and help the power circuit designers
to enhance EMI performance with fewer components and
less developing time.

Features
 High-Voltage Startup Circuit
 UVLO (Under Voltage Lockout)
 LEB (Leading-Edge Blanking) on CS Pin
 Internal Frequency swapping
 Internal Slope Compensation
 Internal OCP Compensation
 OVP (Over Voltage Protection) on Vcc Pin
 OLP (Over Load Protection)
 +250mA/-500mA Driving Capability
 Soft-Driving
 Soft Start Time and Grouping Frequency Adjustment

Applications
 LCD Monitor/TV Power
 Switching AC/DC Adaptor and Battery Charger
 Open Frame Switching Power Supply