The NCP1027P100 from ON Semiconductor offers an ideal solution for low-power, highly efficient switched-mode power supplies. With its integrated fixed-frequency current-mode controller and under-voltage lockout, this PWM controller is designed to deliver consistent performance for a wide range of applications, including AC-DC adapters, offline battery chargers, and auxiliary supplies.

Key Features

• Adjustable Switching Frequency: The NCP1027P100 allows designers to choose a switching frequency up to 100 kHz, providing flexibility in the design of the power supply.
• High-Voltage Startup: This device features a high-voltage startup circuit that enables the power supply to start up under full load conditions without the need for additional external components.
• Integrated Protections: To ensure the longevity and reliability of the power supply, the NCP1027P100 includes various protection features such as overvoltage, overload, and short-circuit protection, along with an auto-recovery function.
• Low Standby Power: The controller is optimized for low standby power, which is essential for energy-saving regulations and for applications that require extended battery life.
• Soft-Start Function: The soft-start feature minimizes stress on the power supply during startup by gradually increasing the output voltage, which enhances the overall stability and lifespan of the system.

Applications

The versatility of the NCP1027P100 makes it suitable for a variety of applications, including but not limited to:

• Consumer electronics
• Standby and auxiliary power supplies
• Industrial power systems
• Off-line battery chargers

Package and Availability

The NCP1027P100 is available in a PDIP-7 package, which is designed for easy integration into a wide range of power supply designs. Its compact size and leaded format make it suitable for both automated and manual assembly processes. Check with ON Semiconductor for the latest availability and pricing information.

Conclusion

ON Semiconductor's NCP1027P100 PWM controller is a robust and reliable choice for designers looking to create efficient and compact power supply solutions. Its integrated features and protections ensure a high level of performance while simplifying the design process.