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