NCP1236AD65R2G

AC DC Converters, Offline Switchers Overview

The NCP1236AD65R2G is a fixed frequency current mode PWM controller designed for flyback converters. It operates at a switching frequency of 65 kHz with a maximum duty cycle of 85%. The device features a bootstrap supply capability, allowing operation up to 28 V without an auxiliary winding. It includes integrated brown-out latch functionality, overcurrent protection (OCP), and overvoltage protection (OVP). The component supports surface mount installation in an SOIC-7 package and functions within a temperature range of -40°C to +125°C.

AC DC Converters, Offline Switchers Feature Summary

• Integrates brown-out latch, overcurrent protection, and overvoltage protection mechanisms
• Utilizes bootstrap supply architecture to eliminate the need for auxiliary windings
• Employs fixed frequency current mode control topology for flyback applications

AC DC Converters, Offline Switchers Applications

• AC-DC adapters for laptop and notebook computers
• Power supplies for LCD displays
• Printer power systems
• Household consumer electronics

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix AD65R2G against official onsemi documentation to confirm the 65 kHz frequency rating and SOIC-7 packaging. Confirm RoHS compliance status through the manufacturer's environmental declaration. Check the product lifecycle status, as this series may be subject to obsolescence notices. Ensure the ordering quantity aligns with the factory reel pack size requirements specified in the official datasheet.

AC DC Converters, Offline Switchers Selection Notes

Select this controller for flyback designs requiring fixed frequency operation without auxiliary transformer windings. The integrated brown-out latch provides robust startup behavior under low input voltage conditions. The SOIC-7 package offers a compact footprint suitable for space-constrained adapter designs. Verify that the application does not require quasi-resonant or variable frequency modes, as this part is strictly fixed frequency.

AC DC Converters, Offline Switchers Part Context

This component belongs to the NCP1236 family of fixed frequency current mode controllers from onsemi. The family targets energy-efficient AC-DC power solutions for home electronics. Variants within the series differ primarily by switching frequency ratings and specific pinout configurations, such as the SOIC-7 package used in this model.

AC DC Converters, Offline Switchers Replacement Considerations

NCP1236BD65R2G: Confirmed substitute with identical 65 kHz frequency and SOIC-7 package. NCP1236DD65R2G: Alternative variant within the same family offering similar electrical characteristics.