NCP1053P136G

AC DC Converters, Offline Switchers Overview

The NCP1053P136G is a discontinued AC/DC converter IC from onsemi, designed for offline flyback applications. It integrates a 700V high-voltage switching transistor and operates without an auxiliary winding. The device features a fixed switching frequency of 100kHz and supports output power up to 40W. It utilizes a 7-pin PDIP package with internal current limiting, open-loop protection, overload handling, and overtemperature safeguards. The startup voltage is specified at 8.5V, with a supply voltage range of 7.5V to 10V.

AC DC Converters, Offline Switchers Feature Summary

• Integrated high-voltage switching transistor eliminating the need for external discrete components
• Fixed-frequency pulse width modulation control for stable operation
• Comprehensive fault protection mechanisms including current limit and thermal shutdown

AC DC Converters, Offline Switchers Applications

• Offline flyback power supplies
• AC/DC conversion systems requiring no auxiliary winding
• General purpose isolated power adapters

AC DC Converters, Offline Switchers Procurement Notes

This component is officially listed as discontinued by the manufacturer. Verification of availability should focus on remaining stock from authorized distributors or secondary market suppliers. Confirm the specific ordering suffix matches the required package and temperature rating. Ensure compliance with RoHS standards if applicable to the target application environment.

AC DC Converters, Offline Switchers Selection Notes

Engineers selecting this part must account for its discontinued status when designing new products. Consider the fixed 100kHz frequency and lack of auxiliary winding requirements during transformer design. Evaluate alternative modern equivalents that offer similar pinouts and electrical characteristics to ensure long-term supply chain stability for production runs.

AC DC Converters, Offline Switchers Part Context

The NCP1053 series belongs to onsemi's lineup of integrated power switches for offline converters. This specific model represents a cost-effective solution for low-to-medium power applications where simplicity and reliability are prioritized. It is part of a broader family of controllers designed to simplify power supply design by integrating high-voltage startup circuitry and protection features.

AC DC Converters, Offline Switchers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation due to the component's discontinued status. Engineers should consult official replacement guides or contact the manufacturer directly for validated cross-reference recommendations.