General Dcription
The LD7530/LD7530A are specifically digned for the low total system cost by integrating many functions, protections, and the EMI-improved solution in a tiny SOT-26 package which usually need a lot of extra components or circuits on the general digns.
Furthermore, the LD7530/ 7530A featur green mode operation, leading edge blanking time, internal slope compensation and adjustable over load protection (OLP) delay time to minimize the component counts for switching power supply.
And to satisfy different digns, 2 versions of OVP levels are implemented as ---
• LD7530 --- 28.0V &plun; 1.2V.
• LD 7530A --- 21.0V &plun; 1.2V
Featur
• High-Voltage CMOS Procs with Excellent D protection
• Very Low Startup Current (< 20uA)
• Current Mode Control
• Non-audible-noise Green Mode Control
• UVLO (Under Voltage Lockout)
• LEB (Leading-Edge Blanking) on CS Pin
• Internal Slope Compensation
• OVP (Over Voltage Protection) on Vcc Pin
• OLP (Over Load Protection)
• 300mA Driving Capability
• Adjustable OLP Delay Time
Applications
• Switching AC/DC Adaptor and Battery Charger
• Open Frame Switching Power Supply
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