MAX6775LTC+T

Series:	--
Packaging:	Cut Tape (CT)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Function:	Battery Monitor
Battery Chemistry:	Multi-Chemistry
Number of Cells:	1
Fault Protection:	--
Interface:	--
Operating Temperature:	-40°C ~ 85°C (TA)
Package / Case:	6-WFDFN
Supplier Device Package:	6-uDFN (1.5x1.0)

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Introduction to MAX6775LTC+T

MAX6775LTC+T is an advanced battery management IC that combines multiple features including a power-on reset (POR), timer, temperature monitor, over-current protection circuit, fail-safe charger, cell Balancer, and cell health monitoring. It is designed for maximum effectiveness in battery management applications, particularly in portable and automotive designs.

Application Field of MAX6775LTC+T

MAX6775LTC+T is designed for use in portable and automotive battery chemistries, such as Lithium-ion, Nickel-Cadmium, and Nickel-Metal Hydride. It supports multiple cell configurations, providing flexibility for different application requirements. The built-in power-on reset, timer, over-current protection circuit, and cell health monitoring make it an ideal solution for multi-cell battery systems. For instance, a system can benefit from the MAX6775LTC+T if it has multiple serial- and parallel-connected cells and needs active monitoring with diagnostic features, over-temperature and over-current protection, and fail-safe charge accuracy.The MAX6775LTC+T is also highly suitable for automotive battery management applications. It supports up to 11 cells, including up to four 12V cells and up to seven cells in series with adjustable cell balancing. With its extended supply voltage range, it can be used in more complex applications. The integrated logic and timer features provide additional functions such as sleep mode, power-down protection, and fail-safe charging.

Working Principle of MAX6775LTC+T

The MAX6775LTC+T IC operates by combining conventional and digital control to manage the charge, discharge, and balance of the battery. The conventional control is based on an adjustable voltage feedback, comparator, and amplifier combination. This combination sets the threshold above which a cell is determined to be charging, discharging, or balanced.The digital control logic is responsible for interpreting the status of the cells to determine what actions need to be taken to maintain cell balance. It also provides signals to capacity, current, temperature, and voltage protection circuits, preventing cells from overcharging, over-discharging, and overheating.The MAX6775LTC+T has an integrated clock generator and timer circuit to facilitate accurate timing and cell balancing. This timer monitors the voltage of each cell, and when the time-dependent criterion is met, the cell balancer will be activated. The balancer will adjust the existing current distribution among the cells, which effectively redistributes the energy and helps to bring the cells back into balance.

Conclusion

The MAX6775LTC+T battery management IC is an ideal solution for multi-cell battery systems, providing effective battery management with a range of inbuilt features such as power-on reset (POR), timer, temperature monitor, over-current protection circuit, and cell health monitoring. It is suitable for a variety of battery chemistries, such as Lithium-ion, Nickel-Cadmium, and Nickel-Metal Hydride. The MAX6775LTC+T combines conventional and digital control, working by interpreting the status of the cells and adjusting the current distribution among them when necessary.

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