MAX6717AUKRVD6+T

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Multi-Voltage Supervisor
Number of Voltages Monitored:	2
Output:	Open Drain or Open Collector
Reset:	Active Low
Reset Timeout:	560 ms Minimum
Voltage - Threshold:	1.575V, 2.625V
Operating Temperature:	-40°C ~ 125°C (TA)
Mounting Type:	Surface Mount
Package / Case:	SC-74A, SOT-753
Supplier Device Package:	SOT-23-5
Base Part Number:	MAX6717A

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MAX6717AUKRVD6+T PMIC - Supervisors Application Field and Working Principle

PMIC (Power Management IC) supervisors are widely used to monitor and control power supply in the world of electronics. As a widely used PMIC - supervisors, MAX6717AUKRVD6+T has extensive applications and unique working principle.

1.Application Field

MAX6717AUKRVD6+T mainly applies to battery-powered systems in industrial and consumer electronics. It supervises battery power and provides system power reset when voltage between theSOURCE and GND pins drops. Moreover, it offers overvoltage reset protection when the voltage inSOURCE pin exceeds its threshold. The supply voltage of MAX6717AUKRVD6+T is 3.0V to 6.5V, and it provides a high-accuracy positive output with an adjustable reset delay period up to 200 seconds.The MAX6717AUKRVD6+T has various application fields, including PC systems, peripherals, cellular phones, handheld computers, automotive applications, communications equipment and battery-charger control. Firstly, by offering timeouts on power-on-reset (POR) it prevents failures due to noise transients. Secondly, it can constantly supervise the temperature of power supplies and report changes in system temperature. Moreover, providing an adjustable delay period up to 200 seconds allows it to swallow spike up to 200-milliamps. Finally, MAX6717AUKRVD6+T is also used for automotive and low-cost, “green” systems where power-fail and power-OK signals can eliminate hot-swapping.

2.Working Principle

The controlling unit of MAX6717AUKRVD6+T is a differential amplifier that serves as an operational amplifier when no reset input is present. The operational amplifier compares the voltage from SOURCE and GND pins, and turns into the resetting state if the SOURCE voltage drops. It takes 510ms delay until the reset signal is asserted and the system can come out the resetting state. The reset is re-asserted when voltage between SOURCE and GND pins drops below 1.25V.The MAX6717AUKRVD6+T also provides additional protection when SOURCE voltage exceeds its protection threshold (4.4V). The reset signal is asserted during the non-hinging period and remains until the voltage is brought below 4.4V.

3.Conclusion

MAX6717AUKRVD6+T is a powerful PMIC - supervisors that can monitor and control power supply in various applications. It has a wide range of application fields, including PC systems, peripherals, cellular phones, handheld computers, automotive applications, communications equipment and battery-charger control. By providing a high-accuracy positive output and adjustable reset delay period, the MAX6717AUKRVD6+T can reset the system power when voltage between theSOURCE and GND pins drops and provide protection when SOURCE voltage exceed its protection threshold. The MAX6717AUKRVD6+T works by controlling a differential amplifier that compares the voltage from SOURCE and GND pins and turns into resetting state when voltage drops. In conclusion, the MAX6717AUKRVD6+T offers reliable supervision and protection for power supply.

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