LTC2919HMS-5#TRPBF

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Power Management (PMIC) refers to a set of components that controller power needs from hardware such as circuit boards, operating systems or applications. They provide integrated power control and monitoring functions. Supervisors are a type of PMIC components that provide over-voltage, over-current and over-temperature protection. The LTC2919HMS-5#TRPBF is a supervisor chip from Linear Technology, suitable for automotive and industrial applications. This article is about the application fields and the working principle of the LTC2919HMS-5#TRPBF.

Applications

The LTC2919HMS-5#TRPBF was designed to provide over-voltage, over-current and over-temperature protection in automotive and industrial applications. It is particularly suited for automotive applications such as voltage regulation, battery monitoring, power distribution, and power sequencing. In industrial applications, the chip can be used to monitor status of current, temperature and voltage in surge protectors, and to provide shutdown protection in a broad range of electrical power conversion systems. The chip has an industry-standard form factor that makes it easy to use in existing designs.

Features

The LTC2919HMS-5#TRPBF chip has a number of features that make it a suitable and reliable candidate for automotive and industrial applications. The chip has a high temperature rating of 150 C, making it suitable for operation in high temperature environments. It has a wide operating voltage range of 1.2V to 5.5V, allowing for greater flexibility in design. It also has a wide range of Over Voltage (OV) and Over-Current (OC) thresholds, enabling it to be configured for various applications. The chip also has an active-low PGOOD signal, which tells a system that the chip is protected. This makes it easy to detect when the protections are active.

Working Principle

The LTC2919HMS-5#TRPBF chip works by detecting excessive voltage, current and temperature. When it detects that any of these conditions are exceeded, it shuts off the power supply. This is done by pulling the PGOOD signal low, which signal is sent to connected boards to inform them of the protections being activated. The chip also has a number of fault status registers that indicate which of the over-voltage, over-current and over-temperature protections have been triggered.

In addition, the chip also has a fail-safe function. This function is enabled when a fault is detected, and it prevents the system from restarting until the fault is cleared. This prevents the system from being damaged by the fault. This chip also has an AutoRetry feature that automatically retries a fault after it is cleared. This feature reduces the time required for system recovery by automatically retrying the fault when it is cleared.

The LTC2919HMS-5#TRPBF chip also has an adjustable monitoring window, as well as adjustable under-voltage (UV) thresholds. This allows the chip to be configured to fit the protection requirements of any system. The chip is also equipped with an open-drain push-pull driver (PMPC) that allows the PGOOD signal to be used to drive the power management control logic of other boards.

Conclusion

The LTC2919HMS-5#TRPBF is a supervisor chip from Linear Technology, suitable for automotive and industrial applications. The chip provides over-voltage, over-current and over-temperature protection in automotive and industrial applications, and is designed for use in existing designs. The chip has features such as adjustable monitoring window, adjustable under-voltage thresholds, a fail-safe function, and an AutoRetry feature. The chip\'s PGOOD signal can be used to drive the power management control logic of other boards. These features make the LTC2919HMS-5#TRPBF an ideal candidate for providing protection in power conversion systems.

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