NCP1012ST100T3

AC DC Converters, Offline Switchers Overview

The NCP1012ST100T3G is a monolithic switcher designed for offline flyback converters. It integrates a high-voltage power MOSFET and control circuitry in a single package. The device operates at a fixed switching frequency of 100 kHz with a maximum duty cycle of 67%. It features an internal 700V breakdown voltage switch. The supply voltage range is specified from 8.5V to 10V. The component supports surface mount installation in an SOT-223 (TO-261) package. It includes comprehensive protection mechanisms against overload, overtemperature, and overvoltage conditions.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a high-voltage power switch and controller for compact offline AC-DC conversion
• Provides robust fault protection including overload, thermal, and overvoltage safeguards
• Utilizes a fixed-frequency architecture to simplify transformer design and EMI filtering

AC DC Converters, Offline Switchers Applications

• Offline flyback power supplies
• AC-DC converter designs
• Low-power SMPS applications

AC DC Converters, Offline Switchers Procurement Notes

Verify the exact suffix for ordering as the provided model lacks the 'G' RoHS indicator present in distributor listings. Confirm current availability status as multiple sources indicate this specific part number may be obsolete or end-of-life. Cross-reference the datasheet revision to ensure compatibility with existing design specifications before procurement.

AC DC Converters, Offline Switchers Selection Notes

Select this component for cost-sensitive flyback designs requiring integrated switching capabilities. Ensure the input voltage and power requirements align with the 100 kHz fixed frequency operation. Verify that the SOT-223 thermal performance meets the application's dissipation needs. Compare against newer series if long-term supply stability is a critical project requirement.

AC DC Converters, Offline Switchers Part Context

This device belongs to the NCP101x family of monolithic switchers from onsemi. These components are engineered to reduce external component count by integrating the power switch directly with the control logic. The family typically targets low-power offline applications where size and cost efficiency are prioritized over variable frequency optimization.

AC DC Converters, Offline Switchers Replacement Considerations

NCP1014ST100T3G

AC DC Converters, Offline Switchers FAQ

What is the switching frequency of the NCP1012?

The device operates at a fixed switching frequency of 100 kHz.

Does the NCP1012 include internal protection features?

Yes, it integrates protection against overload, overtemperature, and overvoltage conditions.