MAX14745FEWX+

Series:	Smart Power Selector™
Packaging:	Cut Strip
Part Status:	Active
Battery Chemistry:	Lithium-Ion
Number of Cells:	--
Current - Charging:	--
Programmable Features:	Voltage
Fault Protection:	--
Charge Current - Max:	--
Battery Pack Voltage:	3.6V
Voltage - Supply (Max):	5.5V
Interface:	--
Operating Temperature:	-40°C ~ 85°C (TA)
Package / Case:	36-WFBGA, WLBGA
Supplier Device Package:	36-WLP

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Introduction

Power Management Integrated Circuit (PMIC) Battery Chargers are one of the most critical components in any electronic device. PMIC Battery Chargers ensure optimal charging and discharging of a Li-Ion battery or other rechargeable power source. The MAX 14745FEWX+ is an advanced, high-performance PMIC battery charger designed specifically to handle Li-Ion and Li-Po batteries.

Application Field

The MAX 14745FEWX+ is ideal for a wide variety of applications ranging from notebook PCs and tablet PCs to cell phones and other portable devices. It is an efficient charger, converting up to 94.5% of the incoming AC power into the highest-speed charging available. This allows for quick and safe charging of Li-Ion batteries, as well as reducing heat dissipation from the system.The MAX 14745FEWX+ operates up to six Li-Ion/Li-Po cells for charging and controlling. This makes it very attractive for use in high-capacity packs with up to 4.2V charge voltage. The charger can also be used in low-power applications such as mobile phones and music players.

Working Principle

The MAX 14745FEWX+ uses a constant current/constant voltage charging algorithm to ensure safe and optimal charging of the battery. This algorithm was designed specifically to prevent damage to the battery due to overcharging and to ensure efficient energy utilization. The charger monitors the battery’s temperature, current and voltage to ensure the optimal charging cycle.When a device is connected to the MAX 14745FEWX+ via USB port, the charger begins by sensing the voltage of the battery and adjusting the current accordingly. This ensures that the battery is charged at a safe voltage. The charger then continues to monitor the battery’s temperature, current and voltage throughout the charging period.Once the voltage reaches 4.2V and the current drops below 1.5A, the charger switches over to a constant voltage charging mode. This mode keeps the battery charged at a constant voltage until the current drops below 0.6A. At this point, the charger switches to a trickle charge mode to maintain the battery’s charge level.

Conclusion

The MAX 14745FEWX+ is an efficient PMIC Battery Charger designed to meet the needs of mobile devices. Its advanced charging algorithm ensures optimal charging of Li-Ion and Li-Po batteries, and its multiple-cell control capability makes it suitable for high-capacity packs. The MAX 14745FEWX+ is a high-performance, reliable charging solution for any Li-Ion battery-powered device.

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