NCP1207AD SO8 - PWM Current-Mode Controller for Free Running Quasi-Resonant Operation

The NCP1207AD SO8 integrated circuit, a member of ON Semiconductor's PMICs family, is a PWM current-mode controller designed for free-running quasi-resonant operation. This chip combines a true current mode modulator and a demagnetization detector to ensure efficient operation across various load and line conditions.

Key Features

• Free-running borderline/critical mode quasi-resonant operation
• Current-mode operation with adjustable skip-cycle capability
• No auxiliary winding required for Vcc operation
• Auto-recovery overcurrent protection
• Latching overvoltage protection
• External latch triggering capability (e.g., via overtemperature signal)
• High current sourcing/sinking capability
• Soft-start functionality
• Adjustable skip level
• Internal temperature shutdown
• Direct optocoupler connection

Applications

The NCP1207AD SO8 is well-suited for a variety of applications where efficient and reliable power conversion is crucial. Typical applications include:

• AC-DC adapters for notebooks and other devices
• Offline battery chargers
• Consumer electronics (DVD players, set-top boxes, TVs, etc.)
• Auxiliary power supplies (USB, appliances, TVs, etc.)

Why Choose NCP1207AD SO8?

This device offers a robust and efficient solution for power management applications. Its features, such as quasi-resonant operation and integrated protection mechanisms, contribute to a reliable and compact design. The absence of the need for an auxiliary winding simplifies the design process and reduces component count.

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