The OB2300CPA is a highly integrated and cost-effective PWM power switch IC optimized for off-line flyback converter applications. It features high precision CV/CC control, comprehensive protection features and high efficiency, making it an ideal solution for battery chargers and adapters.

Applications:

• AC/DC Adapters for mobile phones, tablets, and other portable devices.
• Battery chargers for various battery chemistries (Li-ion, Ni-MH, etc.).
• LED Lighting Power Supplies.
• Standby Power Supplies for consumer electronics.
• Small power supplies for IoT devices.

Features:

• Primary-Side CV/CC Control: Eliminates the need for optocoupler and secondary control circuitry, reducing BOM cost.
• Built-in High Voltage Power MOSFET: Simplifies design and reduces external component count.
• Accurate Constant Voltage (CV) and Constant Current (CC) Control: Ensures precise output voltage and current regulation.
• Low Startup Current: Minimizes power consumption during startup.
• Cycle-by-Cycle Current Limiting: Protects the power MOSFET from overcurrent conditions.
• Over Voltage Protection (OVP): Protects the load from excessive output voltage.
• Over Temperature Protection (OTP): Protects the IC from overheating.
• Short Circuit Protection (SCP): Protects the power supply from short circuit conditions.
• Open Loop Protection: Prevents damage in case of an open loop condition.
• Frequency Jittering for Improved EMI Performance: Reduces electromagnetic interference, simplifying system design.
• Available in DIP-8 Package: Provides a compact and cost-effective solution.

Benefits:

• Reduced BOM Cost: Primary-side control and integrated MOSFET minimize external components.
• High Efficiency: Optimized design and control algorithms ensure high efficiency.
• Reliable Operation: Comprehensive protection features ensure reliable operation under various conditions.
• Simplified Design: Primary-side control simplifies power supply design and reduces development time.
• Improved EMI Performance: Frequency jittering reduces electromagnetic interference.

Additional Details:

The OB2300CPA is designed for primary-side CV/CC control, eliminating the need for an optocoupler and secondary control circuitry. This significantly reduces the Bill of Materials (BOM) cost and simplifies the power supply design. The integrated high voltage power MOSFET further reduces the external component count. The accurate constant voltage (CV) and constant current (CC) control ensures precise output voltage and current regulation, which is essential for battery charging applications. The IC also features a low startup current, which minimizes power consumption during startup. Comprehensive protection features, including cycle-by-cycle current limiting, over voltage protection, over temperature protection, and short circuit protection, ensure reliable operation under various conditions. Furthermore, the incorporation of frequency jittering significantly reduces electromagnetic interference, simplifying system design and EMC compliance. The device is available in a compact DIP-8 package, providing a cost-effective and easy-to-implement solution.