MP5493GJ-Z

Overview

The MP5493GJ-Z is a specialized power management IC from Monolithic Power Systems, designed for smart meter backup power applications. It integrates a synchronous buck converter and a supercapacitor charger/boost regulator in a single TSOT-23-8 package. The device supports an input voltage up to 36V and delivers a continuous output current of 0.6A. Operating at a fixed switching frequency of 550kHz, it provides regulated outputs of 2.65V or 3.3V. The component functions within a temperature range of -40°C to +125°C and features low quiescent current of 450µA.

Feature Summary

• Integrates synchronous buck and boost topologies for seamless transition between normal operation and backup modes
• Supports direct charging of supercapacitors while regulating system voltage during input loss events
• Includes comprehensive protection mechanisms such as overcurrent, short circuit, overvoltage, and overtemperature safeguards

Applications

• Smart meter backup power supply systems
• Supercapacitor charging and boosting circuits
• PLC mode power management solutions

Procurement Notes

Verify the specific suffix and package variant against the manufacturer's latest datasheet to ensure compatibility with design requirements. Confirm RoHS compliance status and lead times through authorized distributors. Validate that the selected component matches the required thermal performance and electrical specifications for the target application environment before finalizing procurement orders.

Selection Notes

Select this component when a compact solution is needed for smart meters requiring both main power regulation and supercapacitor backup management. The integrated architecture reduces bill of materials cost and board space compared to discrete three-chip solutions. Ensure the input voltage range and load current requirements align with the device's 36V and 0.6A limits respectively.

Part Context

This part belongs to the MP5493 series of specialized power management ICs from Monolithic Power Systems. It is engineered specifically to simplify power architectures in utility metering devices by combining multiple functions into one small footprint. The series addresses the need for reliable data retention during power outages using supercapacitor technology.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.