General Description
The LD7510/J is an excellent primary side feedback controller, which integrates 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 LD7510/J features OLP (Over Load Protection) and 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 LD7510/J consists of dedicated load regulation compensation circuit to improve it.
+patent pending
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
• OLP (Over Load Protection)
• 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
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