Features
High-Voltage CMOS Process with Excellent ESD
protection
Very Low Startup Current (<1.5A)
Current Mode Control
Green Mode Control
UVLO (Under Voltage Lockout)
LEB (Leading-Edge Blanking) on CS Pin
Internal Frequency Swapping
Internal Slope Compensation
OVP (Over Voltage Protection) on Vcc Pin
Brownout Protection
OLP (Over Load Protection)
300mA/-500mA Driving Capability
Grouping Frequency Limitation for Audio Noise

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

General Description
The LD5532 is built with several functions, audio noise
prevention, protection and EMI-improved solution in a tiny
package. It takes less components counts or circuit space,
especially ideal for those total solutions of low cost.
It includes low startup current, green-mode power-saving
operation, leading-edge blanking of the current sense and
internal slope compensation. It also features protections
of OLP (Over Load Protection) and OVP (Over Voltage
Protection) to prevent circuit from damage under
abnormal conditions.
Furthermore, the Frequency Swapping function is also
built-in to reduce the noise level and thus helps the power
circuit designers to easily deal with the EMI filter design by
spending minimum amount of component cost and
developing time.