LTC2911HTS8-3#TRMPBF

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PMIC - Supervisors are an important class of power management integrated circuits (PMIC) used in microprocessor applications. The LTC2911HTS8-3#TRMPBF is a PMIC supervisor in the LTC2910 family. It is a multi-voltage and multi-function supervisor intended to develop, supervise, and protect systems and components powered by multiple supply voltages. In this article, the application field of LTC2911HTS8-3#TRMPBF and its working principle is discussed.

Application Field of LTC2911HTS8-3#TRMPBF

The LTC2911HTS8-3#TRMPBFchip is widely used in precision analog instruments and applications that rely on accurate monitoring and reporting of supply voltages. It supports multiple power systems, providing boot and shutdown functions, voltage and temperature monitoring, and fault protection for higher performance, greater reliability and longer device life cycles. Typical applications for this device include microprocessor-based systems, embedded systems, industrial control systems, battery powered electronics, automotive applications, and consumer electronics.

The LTC2911HTS8-3#TRMPBF chip is designed with high precision and accuracy in mind. It has 8 differential voltage monitor inputs, each with an accuracy of ±1.00%. This accuracy is achieved through specialized circuitry and a trim process, so the chip can respond quickly to overvoltage and undervoltage conditions as well as microprocessor errors. The chip also has low current consumption, with typical values of 290µA while active and 40nA while in sleep mode. This is an important feature in high power applications, where large currents are used to run the system.

The LTC2911HTS8-3#TRMPBF chip also includes an integrated 2.1V bandgap reference, which ensures that measurements are accurately referenced to ground. This allows the system to ensure the accuracy of power supply monitoring and alarm detection over time. Other features of the chip include an integrated watchdog timer for detecting timeouts, and fault protection logic for detecting open and shorted connections.

Working Principle of LTC2911HTS8-3#TRMPBF

The LTC2911HTS8-3#TRMPBF chip uses an on-chip trim process to achieve a ±1.00% accuracy over its full operating temperature range. This process involves trimming the reference voltage and setting pins for each voltage monitor. To begin the trim process, the chip is powered up and the reference is adjusted to the desired accuracy. Then, the chip is powered down and the trim pins are connected to voltage sources of the desired accuracy. The trim pins are then measured and compared to the standard trim settings, and the trim difference is applied to the chip’s reference voltage via a trimming algorithm. This process is repeated until the desired accuracy is reached.

The chip has 8 voltage monitor inputs, each with its own trim pin. These monitors can be configured to detect overvoltage, undervoltage, and microprocessor errors. When an event is detected, the chip sends an alert signal to the system. The chip also offers a variety of features designed to protect the system from fault conditions. This includes open/short detection, overvoltage/undervoltage protection, and an integrated watchdog timer.

The chip also has a low-power mode, which reduces current consumption and allows the system to remain in a low power state when it is not actively in use. This feature is especially useful in battery powered applications, where every bit of power savings is critical. Additionally, the chip has a wide temperature range, allowing it to work in both low and high temperature environments without sacrificing performance.

In summary, the LTC2911HTS8-3#TRMPBF is a high precision and accuracy PMIC supervisor designed for multiple supply voltage applications. It features an on-chip trim process for ensuring accuracy, 8 voltage monitors for monitoring and alarms, low-power mode for extending battery life, and fault protection for protecting the system from any conditions. This chip is widely used in precision analog instruments, high power applications, and embedded systems requiring accurate power supply management.

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