LT1579CS8-3#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:	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	8-SOIC
Base Part Number:	LT1579

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Introduction to LT1579CS8-3#TRPBF

LT1579CS8-3#TRPBF is a Linear Technology (LT) device which is a low-dropout (LDO) positive voltage regulator. The device is housed in an industry-standard TO-220-5 package and is an ideal option for providing voltage regulation in a variety of applications. It is designed to deliver a regulated output voltage up to 5.25V, depending on the device specified. The LT1579CS8-3#TRPBF provides excellent noise immunity, transient response and load regulation performance, making it an efficient and cost-effective solution for a variety of power management requirements.In addition to its voltage regulating abilities, the LT1579CS8-3#TRPBF also boasts a number of integrated safety features. These include an over-voltage protection circuit that limits the voltage to 5.5V and an automatic shutdown feature which cuts off the connection if the output voltage exceeds 6V. This makes the device a particularly good choice for applications such as Li-ion/ Li-polymer battery management.

Application Field of LT1579CS8-3#TRPBF

The LT1579CS8-3#TRPBF is ideally suited for use in battery management applications, particularly Li-ion/ Li-polymer chemistries. It can provide smooth, reliable low-dropout voltage regulation for a variety of power supplies and systems.The device is also well-suited to a number of other applications including regulation of main power, peripherals, stand-by power, and low-frequency, high-voltage spike protection. In addition, due to its high transient response, this regulator can be used to meet the voltage and ripple specifications of modern processors and digital signal controllers.

Working Principle of LT1579CS8-3#TRPBF

The LT1579CS8-3#TRPBF is a low-dropout (LDO) positive voltage regulator. This device uses an internal p-channel MOSFET and error amplifier in order to control the output voltage. It is a simple circuit that is able to provide an accurate and stable regulated voltage output.The LT1579CS8-3#TRPBF has an input and output current limit which works together with the over-voltage protection circuit to protect the device from over-current and over-voltage. The device also has a feature to limit the duty cycle (DMAX) in order to act as a soft start for the regulator.In normal operation, the LT1579CS8-3#TRPBF works to maintain a regulated voltage at the output by comparing the output voltage (VOUT) to an internally set reference voltage (VREF). If the output voltage is higher than the reference voltage, the device will reduce the duty cycle of the MOSFET, lowering the voltage at the output and preventing the device from over-voltaging.If the output voltage drops lower than the reference voltage, the error amplifier outputs a signal to the MOSFET gate, increasing the duty cycle and raising the output voltage. This output voltage regulation is enabled and controlled by the voltage error amplifier.

Conclusion

The LT1579CS8-3#TRPBF is a robust and efficient voltage regulator from Linear Technology. It is ideally suited for use in battery management applications, particularly Li-ion/ Li-polymer chemistries, as well as providing efficient low-dropout voltage regulation for a variety of power supplies and systems. The device also features a number of integrated safety features such as an over-voltage protection circuit, output current limit and an automatically shut-down feature. The working principle of this linear regulator relies on the comparison between the output voltage (VOUT) and an internally set reference voltage (VREF), with the error amplifier then outputting a signal to the MOSFET gate in order to adjust the voltage accordingly.

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