MP172AGJ-Z

AC DC Converters, Offline Switchers Overview

The MP172AGJ-Z is a 700 V non-isolated off-line switching regulator from Monolithic Power Systems. It integrates a 700 V MOSFET and supports Buck, Boost, Buck-Boost, and Flyback topologies. The device provides up to 120 mA output current in CCM and 80 mA in DCM, with a maximum output power of 3 W. It features primary-side constant voltage regulation, eliminating the need for optocouplers. Key electrical parameters include a minimum operating temperature of -40°C, a maximum of +125°C, and a supply current of 720 µA. The component is housed in a TSOT-23-5 package.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a 700 V MOSFET and current source to simplify circuit design and reduce component count.
• Enables precise constant voltage regulation via primary-side control without requiring an optocoupler.
• Supports multiple converter topologies including Buck, Boost, Buck-Boost, and Flyback configurations.
• Incorporates frequency folding and peak current regulation to maintain high efficiency under light load conditions.

AC DC Converters, Offline Switchers Applications

• Low-power offline power supplies for household appliances
• Standby power units and auxiliary power sources
• Non-isolated AC-DC conversion systems

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'GJ' corresponds to the TSOT-23-5 package variant required for your layout. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure that the thermal management strategy accounts for the specified junction temperature range during operation.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring integrated high-voltage switching without external gate drivers. It is suitable for applications prioritizing cost reduction through the elimination of isolation components. Consider the 3 W power limit when determining suitability for the target load requirements.

AC DC Converters, Offline Switchers Part Context

This part belongs to the MP172 series of non-isolated offline regulators. It serves as an evolution of earlier models by offering improved EMI performance and enhanced protection features. The series targets low-power applications where compact size and simplified bill of materials are critical design constraints.

AC DC Converters, Offline Switchers Replacement Considerations

MP172A is listed as an alternative for new designs. Verify pin compatibility and electrical specifications before substitution. Other variants within the MP172 family may offer different packaging options but share similar core functionalities.