LT1579CGN-3.3#TRPBF

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Function:	Power Management
Battery Chemistry:	Multi-Chemistry
Number of Cells:	1
Fault Protection:	Over Current, Over Temperature, Reverse Battery, Reverse Current
Interface:	--
Operating Temperature:	0°C ~ 125°C (TJ)
Package / Case:	16-SSOP (0.154", 3.90mm Width)
Supplier Device Package:	16-SSOP
Base Part Number:	LT1579

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LT1579CGN-3.3#TRPBF Application Field and Working Principle

LT1579CGN-3.3#TRPBF (hereafter LT1579) is a low-dropout voltage regulator from Linear Technologies. It belongs to the family of progressions from other low-dropout regulators, such as LT1758, LT1759, LT1762 and LT1763, but with one significant difference – it can be used for battery management purposes.LT1579 is categorized as a PMIC – Battery Management device since it can be used to monitor, manage and optimize power dissipation in battery operated systems. It is designed to ensure high efficient and safe charging of the battery while optimizing its capacity over time, thus prolonging the life of the battery.The LT1579 is a two-terminal low-dropout voltage regulator which functions as an adjustable current source. It has an operating voltage range of 2.7V to 6.5V and a standard output voltage range of 0.8V to 4.5V. The device is capable of supplying a maximum current of 130mA. The LT1579 also has a Thermal Shutdown feature, which protects the integrated circuit from excessive power dissipation due to short-circuit conditions.The LT1579 is most suitable for being used in battery-operated systems, like cellular phones and other handheld devices, as its design is optimized for efficient operation when coupled with a low-current battery.The LT1579 works by having the input current converted to an average by its internal switching frequency, resulting in a controlled output current. The circuit has an adjustable current limit and alternating current measurement functionality, which work together to allow highly efficient power dissipation.When the load current exceeds the adjustable current limit, the circuit will begin to limit the current flowing from the input supply to the load, thus preventing possible damage to the integrated circuit. The alternating current measurement allows a programmable current-sense resistor to be used, allowing for precise measurement and resetting of the current limit.The LT1579 also includes a number of features, such as weak current-sense protection and power-saving shutdown mode, which allow for a highly efficient operation.In conclusion, the LT1579CGN-3.3#TRPBF device from Linear Technologies is a two-terminal low-dropout voltage regulator which can be used for battery management purposes. It has a wide operating voltage range and provides an adjustable current limit with alternating current measurement capabilities. The LT1579 is an ideal solution for battery operated systems, such as cellular phones, where safety and efficient power dissipation are essential.

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