NCP1240AD065R2G

AC DC Converters, Offline Switchers Overview

The NCP1240AD065R2G is a fixed frequency current mode PWM controller designed for flyback converters. It operates at a switching frequency of 65 kHz and features dual over-current protection with latching capability. The device supports direct connection of an NTC thermistor for over-temperature detection. It utilizes a SOIC-7 package and includes internal startup circuitry to minimize external component count.

AC DC Converters, Offline Switchers Feature Summary

• Fixed frequency current mode control architecture
• Dual over-current protection with latch-off functionality
• Integrated NTC thermistor input for thermal monitoring

AC DC Converters, Offline Switchers Applications

• Flyback converter designs
• Offline power supplies
• Battery chargers

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix AD065R2G against the manufacturer datasheet to confirm the 65 kHz frequency variant. Confirm RoHS compliance status as indicated in official documentation. Check for obsolescence notices or lifecycle announcements from onsemi prior to finalizing procurement plans.

AC DC Converters, Offline Switchers Selection Notes

Select this component for applications requiring fixed frequency operation at 65 kHz. Ensure the design accommodates the SOIC-7 package constraints. Verify that the required output current and voltage levels align with the controller's capabilities within the intended flyback topology.

AC DC Converters, Offline Switchers Part Context

This part belongs to the NCP1240 series of current mode controllers. It is distinct from other variants by its specific 65 kHz operating frequency, designated by the '065' in the model number. The series is generally used for cost-effective offline power solutions.

AC DC Converters, Offline Switchers Replacement Considerations

NCP1240AD100R2G offers similar functionality but operates at 100 kHz instead of 65 kHz.