MP5418AGQG-Z

Overview

The MP5418AGQG-Z is a Monolithic Power Systems switching voltage regulator featuring a negative charge pump and an adjustable linear regulator. It operates within a 2.3 V to 5 V input range, delivering a fixed -3.3 V output from the charge pump and an adjustable output from the second regulator. The device supports a switching frequency of 30 kHz to 550 kHz and maintains a static current of 960 uA. It provides 0.01% load regulation and functions across a temperature range of -40 C to +125 C. Packaged in a QFN-10 footprint, it includes shutdown functionality for power management.

Feature Summary

• Integrates a negative charge pump with a fixed -3.3 V output alongside an adjustable linear regulator for dual-output capability.
• Supports wide switching frequency adjustment from 30 kHz to 550 kHz to optimize efficiency and external component size.
• Features low static current consumption of 960 uA and precise load regulation of 0.01% for stable performance.
• Includes a dedicated shutdown pin for effective power management and extended battery life in portable applications.

Applications

• High-speed optical communication modules requiring negative bias generation
• Portable electronic devices utilizing single-cell lithium-ion or lithium-polymer batteries
• Battery-powered systems needing efficient negative voltage rails for analog circuits

Procurement Notes

Verify the specific suffix 'Z' indicates RoHS compliance when placing orders. Confirm the QFN-10 package dimensions match your PCB footprint requirements. Ensure the input voltage supply remains strictly between 2.3 V and 5 V to prevent operational faults. Check datasheet thermal guidelines for adequate heat dissipation given the 125 C maximum junction temperature rating.

Selection Notes

Select this component when a compact solution is needed for generating negative voltages from a single positive rail. The adjustable regulator allows flexibility for varying logic levels, while the fixed charge pump simplifies design for standard negative bias needs. Consider the 960 uA quiescent current impact on standby power budgets compared to lower-power alternatives.

Part Context

This part belongs to the MP5418 series of PMICs designed for space-constrained applications. It complements other MPS regulators by providing specialized negative voltage generation capabilities. The QFN-10 package aligns with modern surface-mount assembly trends for high-density circuit boards.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing control loops if substituting with similar charge pump regulators from other manufacturers.