General Description
The LD7577J integrated several functions of protections, and EMI-improved solution in a SOP-8/or DIP-8 package. It minimizes the component counts and the circuit space, and it’s perfect for the low cost of applications.
It provides functions of low startup current, green-mode power-saving operation, leading-edge blanking of the current sensing and internal slope compensation. Also, the LD7577J features more protections like OLP (Over Load Protection), OVP (Over Voltage Protection), and brownout protection to prevent the circuit being damaged from the abnormal conditions.
Furthermore, the LD7577J features frequency trembling to suppress the noise and is an excellent solution for EMI filter design.
Features
• High-Voltage (500V) Startup Circuit
• Current Mode Control
• Non-Audible-Noise Green Mode Control
• UVLO (Under Voltage Lockout)
• LEB (Leading-Edge Blanking) on CS Pin
• Internal Slope Compensation
• Internal Slope Compensation
• Internal Over Current compensation
• OVP (Over Voltage Protection) on Vcc Pin
• AC Input OVP (Over Voltage Protection)
• OLP (Over Load Protection)
• Brownout Protection
• 500mA Driving Capability
Applications
• Switching AC/DC Adaptor and Battery Charger
• Open Frame Switching Power Supply
• LCD Monitor/TV Power
Typical Application
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