LTC3554EUD-2#PBF

Series:	PowerPath™
Packaging:	Tube
Part Status:	Active
Applications:	Handheld/Mobile Devices
Current - Supply:	10µA
Voltage - Supply:	2.7 V ~ 5.5 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	20-WFQFN Exposed Pad
Supplier Device Package:	20-QFN (3x3)
Base Part Number:	LTC3554

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Introduction

The LTC3554EUD-2#PBF is a unique power management integrated circuit (PMIC). It is a specialized power management IC (PMIC) offering numerous features and benefits that assist in managing power efficiently within a wide range of applications.

Applications

The LTC3554EUD-2#PBF is designed for a variety of applications including mobile phones, tablet. It is used for single cell Li-ion/Li-polymer battery charging, for portable consumer electronics, automotive, and industrial devices. This PMIC can be used to provide distributed power and voltage regulation for the entire system. It provides system-level power management, allowing design flexibility and saving critical board space. The IC can also be utilized in situations where it is necessary to charge up to four Li-ion/ Li-polymer batteries and also switch between multiple power supply sources.

Working Principle

This IC works by taking in the input power, transforming it into a usable form and then distributing it to the appropriate points. It works by regulating the voltage, managing battery charge, and providing additional power when necessary.The main feature of the LTC3554EUD-2#PBF is the 3-step charge cycle that helps optimize the charging of the battery. In step 1, the pre-charge phase, the IC regulates the charge current to a pre-defined level. This phase is necessary to minimize the inrush of current into the battery and to prevent over stochastic charging. In the 2nd step, the ICC phase, the IC monitors the battery voltage, adjusting the charge current accordingly. The 3rd phase, the T Topoff phase, is used to adjust the charging voltage. This phase is designed to top off the battery so that it does not overcharge.The LTC3554EUD-2#PBF is also equipped with over current, over voltage and temperature protection features. These features make sure that if the input voltage is too high, if there is a high current being drawn from the power supply, or if the temperature of the system exceeds a certain temperature, the IC will shut down the entire system, thereby protecting it from damage.

Conclusion

In conclusion, the LTC3554EUD-2#PBF is an excellent choice for power management in various mobile and consumer applications. It is especially suitable for distributed voltage and power regulation. The IC\'s 3-step battery charge cycle ensures optimal battery charging, and its numerous features like temperature, voltage and current protection, make sure that the battery and the system is protected from damage.

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