LTC4155IUFD#PBF

Series:	PowerPath™
Packaging:	Tube
Part Status:	Active
Battery Chemistry:	Lithium-Ion/Polymer
Number of Cells:	1
Current - Charging:	Constant - Programmable
Programmable Features:	--
Fault Protection:	Over Voltage
Charge Current - Max:	3.7A
Battery Pack Voltage:	4.2V
Voltage - Supply (Max):	5.5V
Interface:	I²C, USB
Operating Temperature:	-40°C ~ 125°C (TJ)
Package / Case:	28-WFQFN Exposed Pad
Supplier Device Package:	28-QFN (4x5)
Base Part Number:	LTC4155

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LTC4155IUFD#PBF Application Field and Working Principle
The LTC4155IUFD#PBF is a Power Management Integrated Circuit (PMIC) designed for battery chargers and related applications. It has a wide range of features and advantages that make it an ideal choice for many different applications. In this article, we will discuss the applications and working principle of LTC4155IUFD#PBF.The LTC4155IUFD#PBF PMIC is designed for battery applications such as portable devices, tablet computers, medical devices, and wearables. It enables efficient charging and pre-charging of batteries while providing constant, safe power supply to the device. Additionally, the device features programmable, adjustable current and voltage parameters to facilitate the fast charging of various battery types.In terms of its working principle, the PMIC features a buck-boost configuration which helps to optimize power supply and battery charging. This is achieved by inputting either a DC or AC input voltage and configuring the system to draw the optimal current and voltage parameters. The integrated buck-boost regulator works in tandem with an embedded current-sensing FET to ensure a precise current delivery and safe transfer of power. Additionally, the device also supports high-impedance pre-charge output and an adjustable pre-charge current.The LTC4155IUFD#PBF PMIC also offers a range of safety and protection features to ensure safe power delivery. The device is equipped with over temperature protection and low battery detection to limit the current output, thus protecting the device from potential damage. In addition, the device also has protection against over voltage, over current, and short circuit conditions.Overall, the LTC4155IUFD#PBF is an excellent Power Management Integrated Circuit which is designed specifically for battery applications. Its buck-boost regulator coupled with current-sensing FET and safety features allows for efficient and safe transfer of power. It is an ideal solution for a range of devices including portable electronics, medical devices, tablet computers, and wearables.

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