TEA1733BT/N2,118

AC DC Converters, Offline Switchers Overview

The TEA1733BT/N2,118 is an AC/DC converter IC from NXP Semiconductors, designed for flyback topologies. It operates at a switching frequency of 123 kHz and utilizes an 8-SOIC package. The device supports fixed frequency operation with continuous conduction mode (CCM) capabilities. Key electrical parameters include a maximum duty cycle of 72% and a minimum operating temperature of -40°C, extending to a maximum of +150°C. The component is classified under the GreenChip SMPS control IC series, intended for low-cost power supply applications.

AC DC Converters, Offline Switchers Feature Summary

• Integrates EMI optimization through frequency dithering technology to reduce electromagnetic interference.
• Features adjustable soft-start and slope compensation suitable for continuous conduction mode operation.
• Includes over-power protection (OPP) allowing short-time operation during fault conditions.
• Supports input undervoltage protection (UVP), overvoltage protection (OVP), and over-temperature protection (OTP).

AC DC Converters, Offline Switchers Applications

• Low-cost switched-mode power supply designs
• Flyback topology converters
• Offline AC/DC conversion systems

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'N2' against official NXP documentation to confirm pinout and functional compatibility, as ordering suffixes may indicate variations in packaging or tape/reel specifications. Confirm that the part status is obsolete before finalizing procurement plans, as availability may be limited. Ensure the selected variant matches the required thermal and electrical ratings for the target application environment.

AC DC Converters, Offline Switchers Selection Notes

Select this controller for applications requiring a fixed-frequency flyback solution with integrated EMI reduction features. The device is suitable for designs prioritizing low external component count and cost efficiency. Consider the 123 kHz switching frequency when designing transformer and filter components. Verify that the 8-SOIC package fits the PCB layout constraints and thermal management requirements of the system.

AC DC Converters, Offline Switchers Part Context

The TEA1733BT belongs to the TEA173x family of GreenChip SMPS controllers, which are optimized for high efficiency and reliability in low-power AC/DC converters. This family integrates advanced protection features and EMI mitigation techniques directly into the silicon, reducing the need for additional external circuitry compared to earlier generations of flyback controllers.

AC DC Converters, Offline Switchers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided data. Consult NXP technical support for direct replacements or cross-reference options for the obsolete TEA1733BT/N2,118.