LTC4355CMS#TRPBF

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The LTC4355CMS#TRPBF is a member of the LTC4355 family of Power Management Integrated Circuit (PMIC) - OR Controllers, Ideal Diodes, available in an MS-8 package. This device includes built-in current and voltage monitoring, as well as a wide array of other features that can simplify system design and improve system reliability. In this article, we will discuss the LTC4355CMS#TRPBF application field and working principle.

Application Overview:

The versatile LTC4355CMS#TRPBF Power Management IC is designed for industrial, automotive, medical, and military applications. It can be used to provide battery monitoring, streamline system integration, reduce part count, and enable power optimization. The device can be configured to support a wide range of monitoring functions by using individual pins to select and enable features. These features can include voltage and current sensing, input current limiting, output over-current, and over-temperature protection, as well as other protections. The device can be used as an ORing controller for dual battery systems or to form an OR Gate for system power sequencing. In addition, the device can be used for bidirectional current sensing for monitoring and management of battery charge/discharge events.

Working Principle:

The LTC4355CMS#TRPBF is based on a dual-channel Power-Management IC that contains two OR Controllers and two Ideal Diodes. These two channels are connected in series with an external battery and an auxiliary power source, such as an AC/DC converter. The OR Controllers control the power flow through their respective channels, while the Ideal Diodes allow the current to flow only through the active channel. The OR Controllers are used to manage the power flow between the source and the battery, while the Ideal Diodes prevent any power flow through the inactive channel. The device can also be configured to support voltage and current monitoring and provide over-temperature and over-voltage protection.

The OR Controllers use an analog switch that is adjusted via a control input to control the output voltage. The control voltage can be either a fixed voltage, or can be a variable voltage, depending on the application. When the OR Controllers are enabled, the analog switch connects the output of the controller to the input of the channel. The Ideal Diodes (also known as \'Schottky\' diodes) block any current from flowing through the inactive channel, so that the active channel is able to carry the full load current. The OR Controllers are also able to monitor the input current, output voltage and temperature, which allows them to provide over-current, over-voltage and over-temperature protection.

Conclusion:

The LTC4355CMS#TRPBF is a versatile Power Management IC that can be used to manage power flow in a wide range of applications. It includes two OR Controllers and two Ideal Diodes, as well as built-in current and voltage monitoring. It can be used in a variety of configurations to provide over-voltage, over-current, over-temperature, and battery monitoring protection. This makes it an ideal choice for industrial, automotive, medical, and military applications.

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