NCP1077ABP100G

AC DC Converters, Offline Switchers Overview

The NCP1077ABP100G is an enhanced off-line switcher from onsemi, designed for flyback AC/DC converter topologies. It integrates a high-voltage startup circuit and a current mode controller within a single chip. The device operates with a fixed switching frequency of 100 kHz and supports a maximum duty cycle of 68%. Key electrical parameters include a breakdown voltage of 700 V, a startup voltage of 8.4 V, and a supply voltage range of 6.5 V to 20 V. It is housed in a 7-PDIP package and offers isolated output capabilities.

AC DC Converters, Offline Switchers Feature Summary

• Integrates high-voltage startup circuitry to eliminate the need for auxiliary winding.
• Includes comprehensive protection features such as overcurrent, overtemperature, and overvoltage protection.
• Utilizes current mode control for improved line regulation and transient response.

AC DC Converters, Offline Switchers Applications

• Low power offline AC/DC converters
• Flyback power supply designs
• Consumer electronics power adapters

AC DC Converters, Offline Switchers Procurement Notes

Verify component authenticity through authorized onsemi distributors or certified partners. Confirm RoHS compliance status and check for recent Product Change Notifications (PCN) regarding manufacturing site changes. Ensure storage conditions adhere to moisture sensitivity level guidelines prior to assembly.

AC DC Converters, Offline Switchers Selection Notes

Select this component for applications requiring a fixed 100 kHz switching frequency and integrated high-voltage startup. The 7-PDIP package suits through-hole mounting requirements. Evaluate thermal performance at the maximum operating temperature of 125°C junction temperature when designing the heat dissipation strategy.

AC DC Converters, Offline Switchers Part Context

This part belongs to the NCP1077 series of enhanced off-line switches. It is distinct from other variants like the NCP1077BBP100G which may offer different frequency options. The ABP suffix indicates specific pinout and packaging characteristics within the PDIP-7 form factor.

AC DC Converters, Offline Switchers Replacement Considerations

NCP1077STBT3G is listed as a manufacturer-recommended alternative, offering surface mount packaging in SOT-223-4.

AC DC Converters, Offline Switchers FAQ

What is the switching frequency of the NCP1077ABP100G?

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

Does the NCP1077ABP100G support isolated outputs?

Yes, the datasheet specifies that the product provides isolated output capabilities.