NCP1247AD065R2G

AC DC Converters, Offline Switchers Overview

The NCP1247AD065R2G is a fixed-frequency current-mode controller designed for flyback converters. It operates at a switching frequency of 65 kHz and supports a maximum duty cycle of 80%. The device features an output drive capability of 800 mA with rise and fall times of 30 ns and 20 ns, respectively. It functions within a supply voltage range of 8.8 V to 35 V and draws a typical operating supply current of 1.4 mA. The component is rated for operation between -40°C and +150°C and is housed in a SOIC-7 package.

AC DC Converters, Offline Switchers Feature Summary

• Fixed-frequency current-mode control architecture for flyback topologies
• Integrated multimode operation for enhanced efficiency
• Low consumption off mode with fault state retention for safety

AC DC Converters, Offline Switchers Applications

• Fixed-frequency flyback power supplies
• General-purpose isolated DC-DC conversion
• Offline AC-DC adapter designs

AC DC Converters, Offline Switchers Procurement Notes

Verify the lifecycle status as Obsolete before integration into new hardware designs. Confirm that the SOIC-7 package dimensions align with existing PCB footprints. Ensure compatibility with the 65 kHz switching frequency requirements of the target application. Review the datasheet for specific thermal management needs given the wide operating temperature range.

AC DC Converters, Offline Switchers Selection Notes

Select this component for applications requiring a simple, fixed-frequency current-mode solution. It is suitable where multimode efficiency benefits are desired without complex variable-frequency control loops. Consider the 800 mA peak drive current when sizing external MOSFETs. Verify that the 65 kHz frequency meets EMI constraints for the intended product.

AC DC Converters, Offline Switchers Part Context

This part belongs to the NCP1247 series of switching controllers from onsemi. It is specifically engineered for flyback converter implementations. The device integrates essential protection features and drive capabilities required for standalone power supply designs. It serves as a core control element in offline power conversion systems.

AC DC Converters, Offline Switchers Replacement Considerations

The manufacturer lists this part as Obsolete. No direct public substitute part numbers are confirmed in the provided documentation. Designers should consult official obsolescence notices or contact the manufacturer for recommended alternative components.