MIC79050-4.2YMM

Overview

The MIC79050-4.2YMM is a linear battery charger IC designed for single-cell Lithium-Ion and Lithium-Polymer batteries, manufactured by Microchip Technology. It features an on-chip pass transistor to deliver high-precision charging with an accuracy of ±0.75% over the Li-Ion battery charging temperature range. The device supports a maximum supply voltage of 16V and operates within a junction temperature range of -40°C to +125°C. Packaged in an 8-pin MSOP (0.118 inch / 3.00mm wide) format, it provides a cost-effective solution with zero off-mode current state.

Feature Summary

• Integrates an on-chip pass transistor for simplified high-precision charging circuitry
• Maintains ultra-high charging accuracy of ±0.75% across the specified temperature range
• Achieves zero off-mode current state to minimize power consumption when not actively charging

Applications

• Simple single-cell Lithium-Ion battery chargers
• Lithium-Polymer battery management systems
• Portable electronic devices requiring compact power management solutions

Procurement Notes

Verify the specific suffix 'YMM' corresponds to the 8-pin MSOP tube packaging variant. Confirm RoHS compliance status as some related variants may differ. Ensure the design accounts for the 16V maximum supply voltage limit and thermal requirements within the -40°C to +125°C operating range. Cross-reference official datasheets for exact pinout and electrical characteristics before finalizing procurement.

Selection Notes

Select this component for applications requiring a simple, low-component-count solution for single-cell Li-Ion or Li-Po batteries. The integrated pass transistor eliminates the need for external power switches. Consider the 8-pin MSOP package for space-constrained designs. Verify that the required charging precision meets the ±0.75% specification and that the operating environment falls within the stated temperature limits.

Part Context

This part belongs to the MIC79050 family of linear battery chargers from Microchip Technology. It is specifically configured for a 4.2V output suitable for standard single-cell Lithium-Ion chemistry. The 'YMM' designation indicates the 8-pin MSOP tube package option, distinguishing it from tape-and-reel or other package variants like SOIC-N or SOT-223 within the same functional family.

Replacement Considerations

MIC79050-4.2YMM-TR is a direct replacement offering the same functionality in tape-and-reel packaging instead of tubes.