MIC79050-4.2YM

Overview

The MIC79050-4.2YM is a linear single-cell lithium-ion battery charger manufactured by Microchip Technology. It features an integrated on-chip pass transistor designed for high-precision charging applications. The device provides ultra-high accuracy of ±0.75% over the lithium-ion battery charging temperature range and maintains a zero off-mode current state. This component offers a simple, cost-effective solution for managing lithium-ion battery charging cycles.

Feature Summary

• Integrates an on-chip pass transistor to enable high-precision charging control without external components.
• Delivers ultra-high charging accuracy specified as ±0.75% across the operational lithium-ion battery temperature range.
• Achieves zero off-mode current state to minimize power consumption when the charging process is inactive.

Applications

• Simple single-cell lithium-ion battery chargers
• Lithium-polymer battery management systems

Procurement Notes

Verify the specific suffix YM indicates the 8-pin SOIC-N tube packaging configuration distinct from tape-and-reel variants. Confirm the -4.2 designation aligns with the required 4.2V output voltage setting for your target cell chemistry. Ensure compatibility with the intended thermal environment given the linear regulator topology.

Selection Notes

Select this part for designs requiring minimal external component count due to the integrated pass transistor. It is suitable for applications prioritizing charging precision within the standard lithium-ion temperature operating window. Consider the SOIC-N package constraints for PCB layout and thermal dissipation requirements compared to other available package options in the series.

Part Context

This component belongs to the MIC79050 family of linear battery chargers. Variants such as MIC79050-4.2YS, MIC79050-4.2YMM, and MIC79050-4.2YM share the same core functionality but differ in physical packaging formats including SOT-223, MSOP, and SOIC-N. The YM suffix specifically identifies the surface-mount SOIC-N tube version.

Replacement Considerations

Direct substitutes include MIC79050-4.2YM-TR (tape and reel), MIC79050-4.2YS (SOT-223), and MIC79050-4.2YMM (MSOP). Verify that the alternative package supports the required board space and manufacturing assembly methods.