General Description
The LD7510A is an excellent primary side feedback controller, integrated with several functions of protections. It minimizes the components counts and is available in a tiny SOT-26 package. Those make it an ideal design for low cost 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 LD7510A features OVP (Over Voltage Protection) to prevent the circuit being damaged from the abnormal conditions.
In most cases, the power supply with primary-side feedback controller would accompany with some serious load regulation effect. To deal with this problem, the LD7510A consists of dedicated load regulation compensation circuit to improve it.
Features
• Primary-side feedback control
• Built-in Load Regulation Compensation
• Built-in Slope Compensation with 75% max duty-cycle
• Low Startup Current (<20µA)
• Current Mode Control with Cycle-by-Cycle Current Limit
• Non-audible-noise Green Mode Control
• UVLO (Under Voltage Lockout)
• LEB (Leading-Edge Blanking) on CS Pin
• OVP (Over Voltage Protection) on Vcc
• 300mA Driving Capability
Applications
• Replace for Linear Transformer and RCC SMPS.
• Switching AC/DC Adaptor and Battery Charger
• Open Frame Switching Power Supply
• Auxiliary Power Supply
Typical Application
Typical Application
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