MAX6454UT16S+T

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The use of power management integrated circuits (PMICs) is commonplace in modern electronic design, and among the many such PMICs available, supervisors provide some of the most important, specialized types of function. A prime example of this type of component is the MAX6454UT16S+T PMIC from Maxim Integrated. This component offers an adjusted reset and temperature monitor and is suitable for analog and digital systems. This article will look at the application field of the device and the main principles of its operation.

Application Field

The MAX6454UT16S+T is a supervisor integrated circuit (IC) that provides both integrated reset and temperature monitor functions in a single, compact package. It is designed to protect sensitive digital and analog systems from negative events such as under-voltage, over-voltage, open circuit and overtemperature conditions. It is intended to protect the power supply and digital components during system power-up, power-down and while in operation. The device is suitable for a wide range of applications, including industrial and communications systems, automotive electronics and portable (battery-operated) devices.

The MAX6454UT16S+T supervisors offer an adjustable reset function with an active-low RESET output, a selectable power-on-reset (POR) delay of less than 2µs, an adjustable reset threshold voltage of 2.20V, a reset output-to-input voltage hysteresis of 0.12V and an overvoltage lockout feature. In addition, the device also features an adjustable hysteresis for the temperature monitoring breakout point.

Working Principle

The basic operating principle of the MAX6454UT16S+T is relatively straightforward. The device has an input voltage sensing circuit and a temperature sensing circuit. Each of these circuits is continuously monitored and compared to their respective set thresholds. If either threshold is crossed, the device generates a reset signal to initiate a system reset, thus preventing potential damage.

The temperature monitoring circuit, which is based on a built-in temperature sensing diode, is programmed by the user to a specific temperature threshold. When the temperature increases beyond this threshold, the device will trigger an active-low RESET signal which is used to reset the system before the temperature rises beyond its safe operating range. This reset signal can also be triggered by an overvoltage condition.

The voltage monitoring circuit can be programmed by the user to a specific voltage threshold. When the voltage drops below or rises above this threshold, the device will trigger an active-low RESET signal which can be used to reset the system to a safe state. The reset signal still works even after the voltage has passed its safe operating range.

The MAX6454UT16S+T supervisor device also features an adjustable reset hysteresis which allows for a small voltage range before the reset signal is triggered, thus preventing false triggering. Additionally, the device features an overvoltage lockout feature, which helps prevent overvoltage conditions from damaging the system. This feature also prevents reset signals from being triggered at voltages beyond the specified threshold.

The MAX6454UT16S+T supervisor is a highly specialized component, designed to protect sensitive digital and analog systems from negative events such as under-voltage, over-voltage, open circuit and overtemperature conditions. With its adjustable reset and temperature monitoring features, the device is ideal for a wide range of applications, including industrial and communications systems, automotive electronics and portable (battery-operated) devices.

The specific data is subject to PDF, and the above content is for reference