NCP1070P100G

AC DC Converters, Offline Switchers Overview

The NCP1070P100G is an integrated AC-DC controller and 700 V MOSFET designed for low-power offline applications. It operates in a fixed-frequency current mode at 100 kHz with a maximum duty cycle of 69%. The device features dynamic self-supply (DSS) to eliminate auxiliary windings, incorporating soft-start, frequency jittering, and peak current limiting. Protection mechanisms include overvoltage protection (OVP), short-circuit protection (SCP), and thermal shutdown (OTP). It supports flyback topology within a PDIP-7 package.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a 700 V high-voltage MOSFET with a fixed-frequency current-mode controller
• Features dynamic self-supply operation that removes the need for auxiliary windings
• Incorporates comprehensive protection including overvoltage, short-circuit, and thermal shutdown
• Supports frequency jittering and skip-cycle modes for enhanced efficiency under light loads

AC DC Converters, Offline Switchers Applications

• Low power offline AC/DC converters
• Standby power supplies
• Adapters and chargers

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'P100' confirms the 100 kHz switching frequency variant. Confirm the PDIP-7 through-hole package matches the target PCB footprint. Ensure compliance with RoHS directives if required by the end application. Cross-reference the manufacturer's latest datasheet for any recent product change notifications or pinout updates.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring high integration and minimal external components. The absence of an auxiliary winding requirement simplifies transformer design. Consider the 250 mA peak current limit when sizing the output stage. Evaluate the thermal performance requirements given the integrated MOSFET structure.

AC DC Converters, Offline Switchers Part Context

This part belongs to the NCP107x family of highly integrated offline switchers. These devices combine a controller and power switch to reduce solution size. The NCP1070 variant specifically targets lower power applications compared to higher current siblings in the series.

AC DC Converters, Offline Switchers Replacement Considerations

Direct substitutes within the same family include NCP1071P100G and NCP1072P100G, which share the 100 kHz frequency but offer different peak current ratings.