MAX6865UK36D2S+T

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MAX6865UK36D2S+T is a low power supervisor circuit designed to monitor system power supplies, the input voltage and temperature, and the status of an external reset signal from a microprocessor, microcontroller, or ASIC. The device can also be used to detect changes in power supply voltage and to generate reset signals for voltage monitoring and over-temperature protection. The MAX6865UK36D2S+T offers excellent protection against undervoltage, overvoltage and over-temperature faults. It provides a maximum of four independent voltage and temperature thresholds, along with monitoring of a discrete reset input to detect an unintended system reset.

The MAX6865UK36D2S+T has multiple power supply and temperature monitoring options, including dual voltage and temperature detection inputs and a reset active-low output. It is available in a TDFN8 package and supports an operating temperature range of -40°C to +85°C.

Features
• Dual supply and temperature monitoring
• Dual voltage detection inputs
• Dual temperature detection inputs
• Supply voltage range from 1.8V to 5.5V
• Temperature range of -40°C to +85°C
• Overvoltage, undervoltage and over-temperature protection
• Reset active-low output
• TDFN8 package

Application Field
The MAX6865UK36D2S+T is well suited for a variety of applications, including embedded system designs, which require voltage and temperature monitoring and protection. It is used in applications such as mobile phones, digital cameras, portable audio players, PDAs, and other handheld devices. It can also be used in automotive and industrial products, where it can help protect against voltage and temperature transients.

Working Principle
The MAX6865UK36D2S+T operates by monitoring two user-defined power supply rails and two temperature channels. It then generates a reset signal to the system when the monitored voltage exceeds predetermined thresholds. The voltage threshold values are adjustable from 1.275V to 5.5V. The temperature threshold is adjustable from -40°C to +85°C. The device features an active-low reset signal output, which is triggered when either the supply voltage or temperature reaches the respective threshold. The reset signal is then sent to the microprocessor or microcontroller to reset the system.

The MAX6865UK36D2S+T also features a discrete reset input to detect an intended system reset. The reset signal is active low and needs to be externally driven low in order to meet the MAX6865UK36D2S+T detection threshold. Once detected, the reset output is asserted, triggering the microprocessor or microcontroller to reset the system.

In addition, the MAX6865UK36D2S+T is designed to provide protection against overvoltage and over-temperature conditions by blocking output signals in case of an unexpected power supply or temperature fault. This ensures that the system remains stable and continues to operate normally even in extreme conditions.

The MAX6865UK36D2S+T operates from a single 1.8V to 5.5V supply and comes in a TDFN8 package for compact design. This makes it easy to integrate into a wide range of systems, providing a high level of protection against unexpected power supply and temperature transients.

Overall, the MAX6865UK36D2S+T is an ideal solution for many applications and can provide reliable operation in both industrial and consumer electronic applications. It is a versatile device that is well suited for monitoring of large or small systems, and provides protection against overvoltage, undervoltage and over-temperature conditions.

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