MP163BGS-33

AC DC Converters, Offline Switchers Overview

The MP163BGS-33 is a non-isolated offline switching regulator from Monolithic Power Systems, designed for applications requiring up to 3W of output power. It integrates a high-voltage startup circuit and an internal 700V power switch, eliminating the need for external components typically required in flyback designs. The device features a fixed 3.3V output with a maximum output current of 420mA. It supports Buck, Boost, and Flyback topologies and includes an integrated LDO for auxiliary supply regulation. Operating parameters include a minimum input voltage of 5.1V, a typical operating supply current of 720uA, and a shutdown function. The component operates within a temperature range of -40°C to +125°C and is housed in an SOIC-8-B-7 package.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a 700V high-voltage startup circuit and internal power switch for simplified design
• Includes an integrated LDO for stable auxiliary supply generation
• Supports multiple converter topologies including Buck, Boost, and Flyback configurations

AC DC Converters, Offline Switchers Applications

• Non-isolated offline power supplies
• Auxiliary power circuits for AC/DC converters
• Low-power isolated or non-isolated adapter designs

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix (e.g., -P, -Z) against official MPS documentation to confirm packaging type and moisture sensitivity level. Ensure the selected variant matches the required tape-and-reel quantity and handling specifications. Cross-reference the exact part number with the manufacturer's latest datasheet to confirm availability status and compliance certifications such as RoHS before finalizing procurement orders.

AC DC Converters, Offline Switchers Selection Notes

Select this component when a compact solution for low-power offline regulation is required without isolation barriers. The integrated 700V switch and startup circuit reduce external bill-of-materials compared to discrete solutions. Consider the 420mA output limit and 3.3V fixed voltage when sizing the load. Verify that the application topology aligns with the supported Buck, Boost, or Flyback modes and that the thermal performance meets the +125°C junction temperature requirement.

AC DC Converters, Offline Switchers Part Context

The MP163BGS-33 belongs to the MP163 series of non-isolated offline regulators manufactured by Monolithic Power Systems. This family is characterized by high integration levels, combining high-voltage startup, power switching, and control logic into a single IC. The series targets cost-sensitive, low-power applications where board space is limited and external component count must be minimized while maintaining reliable operation across varying line conditions.

AC DC Converters, Offline Switchers Replacement Considerations

• MP163BGSE-33-Z