MAX6385XS23D7-T

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Introduction

MAX6385XS23D7-T is an ultra-low-power system-level supervisor. It provides a two-level reset for protecting the power system and providing a start-up reset. It is designed to be used in applications requiring dual-supply processing, such as 3V3/3V5, 1V8/3V3, 1V5/3V5, and other dual-supply applications. It can monitor a wide variety of power systems, including buck and boost converters, AC/DC adapters, charge pumps, and other DC-power systems that are connected to the VCC power rail. This supervisor has several different functions, including a power-on reset, a brown-out reset, a watchdog timer, a power-fail detector, and an optional manual reset.

Application Fields

The MAX6385XS23D7-T is designed for use in a wide variety of applications, including telecommunications infrastructure, industrial automation and control, automotive, communications systems, medical electronics, netbooks, and other embedded systems. It is designed to be used in applications that require a two-level reset for protecting the power system and providing a start-up reset. It can also be used in dual-supply applications, such as 3V3/3V5, 1V8/3V3, 1V5/3V5, and other dual-supply applications.

Features

• Wide supply voltage range (1.8 V to 5.5 V)
• Two-level power-on reset (POR) (1st and 2nd-level)
• 2.2 ms to 633 ms power-on reset timeout
• Manual reset (MR) input
• Power failure detector (PFD) with digital output
• watchdog timer (WTD)
• Status register, indicating which of the power-on reset or manual reset is active

Working Principle

The MAX6385XS23D7-T consists of two main blocks, the supervisor and the power-fail detector (PFD). The supervisor contains a voltage monitor, a reset timer, and a status register. The voltage monitor detects changes in the power-supply voltage and generates a reset pulse when the supply voltage drops below the user-programmed reset threshold. The reset timer is activated when the voltage monitor detects a power-supply drop and prevents the reset pulse from becoming active until the reset timeout has expired. The status register is used to indicate which of the power-on reset or manual reset is active. The PFD is used to detect when a power fail of the system occurs. It will issue a reset signal to the reset pin when a power fail is detected.

The MAX6385XS23D7-T also has several optional features that can be used in certain applications. The manual reset input can be used to trigger a reset of the system manually. The watchdog timer can be used to detect when an error has occurred within the system and force a reset. And finally, the status register can be used to monitor the system\'s power-on and reset states.

Conclusion

The MAX6385XS23D7-T is an ultra-low-power system-level supervisor designed for use in applications requiring dual-supply processing. It provides two-level reset for protecting the power system and providing a start-up reset. It can monitor a wide variety of power systems, including buck and boost converters, AC/DC adapters, charge pumps, and other DC-power systems. It also has several optional features, such as a manual reset input and watchdog timer, which can be used in certain applications.

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