NCP1247CD065R2G

AC DC Converters, Offline Switchers Overview

The NCP1247CD065R2G is a fixed-frequency current-mode switching controller manufactured by onsemi. It operates at a constant frequency of 65 kHz and is designed for offline flyback converter topologies. The device features a 7-SOIC package and supports surface-mount installation. It includes integrated high-voltage startup circuitry and offers comprehensive protection mechanisms such as cycle-by-cycle current limiting, overvoltage protection, and thermal shutdown to ensure reliable operation in power supply applications.

AC DC Converters, Offline Switchers Feature Summary

• Fixed-frequency current-mode control architecture
• Integrated high-voltage startup circuit
• Comprehensive protection including OVP and thermal shutdown

AC DC Converters, Offline Switchers Applications

• Offline flyback power supplies
• Adapter and charger designs
• General-purpose isolated DC-DC conversion

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix R2G confirms the reel packaging configuration. Confirm RoHS compliance status through official datasheets. Ensure the SOIC-7 package dimensions match your PCB footprint requirements. Check for any recent lifecycle changes or obsolescence notices from onsemi before finalizing procurement plans.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring a simple, cost-effective fixed-frequency solution. It is suitable for medium-power applications where EMI filtering constraints allow for a 65 kHz switching frequency. Consider the internal startup current consumption and available protection features when evaluating system efficiency and safety requirements.

AC DC Converters, Offline Switchers Part Context

This part belongs to the NCP1247 series of current-mode controllers. It is distinct from variable-frequency or quasi-resonant counterparts in the onsemi portfolio. The device is specifically optimized for standalone flyback converters without the need for external oscillators or complex timing components.

AC DC Converters, Offline Switchers Replacement Considerations

Direct substitutes within the same family include variants with different voltage ratings or pin configurations. Verify compatibility with existing gate drive requirements and protection thresholds when considering alternative part numbers.