MAX6719UTMSD1+

Series:	--
Packaging:	Strip
Part Status:	Active
Type:	Multi-Voltage Supervisor
Number of Voltages Monitored:	3
Output:	Open Drain or Open Collector
Reset:	Active Low
Reset Timeout:	1.1 ms Minimum
Voltage - Threshold:	2.925V, 4.375V, Adj
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	SOT-23-6
Supplier Device Package:	SOT-6

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Introduction

MAX6719UTMSD1+ is a supervisor integrated circuit (IC) by Maxim Integrated. It is an automated system-management supervisor IC, specifically designed for ultra-low-power battery-operated applications such as industrial and medical. This IC enables implements a low power pre-conditioning circuit for post-power-on reset, for a battery-powered system.

Features

The features that makes the MAX6719UTMSD1+ popular among its users include its small size, low standby current, and low bill-of-materials cost. Some of its core features are: * Low current of 300nA* Low-voltage monitoring* Watchdog timer* Pin-programmable reset delay* Push-button power-on reset* Battery-backup output* Adaptable reset time* Multiple time-out detection* Ultra-small 3mm x 3mm package

Applications

MAX6719UTMSD1+ finds its application primarily in industrial, medical and portable electronics, where it is used to ensure stability of the circuit and maintaining low power consumption. Some of the application areas where MAX6719UTMSD1+ IC can be used include: * Home surveillance systems* IoT smart wearables* Building automation* Smart lighting systems* Security systems* Industrial automation* Wireless communication systems* Automotive

Working Principle

The main objective of the MAX6719UTMSD1+ IC is to monitor the system supply voltage and assert a reset signal if the voltage drops below the specified limit. This IC receives a regulated power supply and monitors it using a bandgap reference voltage.The MAX6719UTMSD1+ consists of a voltage supervisor, a power-on reset circuit and a watchdog timer. The voltage supervisor controls the system reset signal, therefore allowing microcontrollers to enter their low-power sleep cycles without resetting them. The power-on reset circuit ensures correct system start-up and prevents logic malfunction. The watchdog timer monitors the microcontroller performance and can issue resets automatically if the code hangs up.The MAX6719UTMSD1+ IC also includes several dedicated transistors to provide high power sinks for reset signal, battery backup and low power consumption, as well as two pins for direct connection of battery backup. The two pins for the battery backup are beneficial in case the power source fails or runs low, as they offer the necessary supply to enable system operations and eliminate the need of additional backup circuitry.

Conclusion

The MAX6719UTMSD1+ is an ultra-low-power and compact IC supervisor solution that has a wide range of industrial, medical, and consumer applications. It is designed to monitor system voltages and assert reset signals, thereby preventing system malfunction. Its small form factor and low standby current, along with its direct battery backup pins and multiple time-out detection options make it an ideal choice for a wide range of applications.

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