General Description
The LD7535/LD7535A are low cost, low startup current, current mode PWM controllers with green-mode power- saving operation. The integrated functions include the leading-edge blanking of the current sensing, internal slope compensation and the tiny package of SOT-26. They provide the users a superior AC/DC power application of higher efficiency, low external component counts, and lower cost solution.
Furthermore, LD7535/LD 7535A features more protections like OLP (Over Load Protection) and OVP (Over Voltage Protection) to eliminate the external protection circuits. And to satisfy different designs, 2 versions of OVP levels are implemented as below.
And to satisfy different designs, 2 versions of OVP levels are implemented as ---
• LD7535 --- 28.0V ± 1.5V
• LD 7535A --- 21.0V ± 1.5V
Features
• High-Voltage CMOS Process with Excellent ESD 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
• Programmable Switching Frequency
• Internal Slope Compensation
• OVP (Over Voltage Protection) on Vcc Pin
• OLP (Over Load Protection)
• 300mA Driving Capability
Applications
• Switching AC/DC Adaptor and Battery Charger
• Open Frame Switching Power Supply
• 384X Replacemen
Typical Application
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