MAX6466UK31+T

Series:	--
Packaging:	Strip
Part Status:	Active
Type:	Simple Reset/Power-On Reset
Number of Voltages Monitored:	1
Output:	Open Drain or Open Collector
Reset:	Active Low
Reset Timeout:	150 ms Minimum
Voltage - Threshold:	3.1V
Operating Temperature:	-40°C ~ 125°C (TA)
Mounting Type:	Surface Mount
Package / Case:	SC-74A, SOT-753
Supplier Device Package:	SOT-23-5

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PMIC - SupervisorsThe MAX6466UK31+T is a precision protection device for overvoltage and overtemperature conditions in a variety of applications. It integrates overvoltage protection, as well as a temperature sensor, providing reliable protection for sensitive electronics.Overvoltage ProtectionThe MAX6466UK31+T is equipped with an overvoltage protection (OVP) circuit. This circuit is designed to detect an abnormally high power supply voltage and disconnect the power line. It utilizes a delta-sigma comparator to provide a robust and accurate OVP measurement. The OVP threshold is set by a single external resistor and is adjustable from 5.0V to 12.0V with ±1% accuracy. The voltage sensing range can be extended up to 17.0V using an additional series resistor. The OVP comparator has a 0.2V hysteresis and can be disabled by pulling the OVPEN pin low.Temperature SensorThe MAX6466UK31+T also features an onboard temperature sensing circuit. This block is able to detect temperatures from -55°C to 125°C with a ±2°C accuracy. It is triggered by an external NTC thermistor, which is connected between the VDD and GND pins. When the temperature reaches the threshold, the MAX6466UK31+T sends a reset signal, interrupting the power supply. The voltage level of the reset signal is adjustable from 1.5V to 6.3V using an external resistor.Output ControlThe MAX6466UK31+T also provides control of the output voltage using the OVPEN pin. This pin is connected to the VSENSE pin, and when it is pulled up, the OVP comparator is enabled. When this pin is pulled low, the comparator will be disabled and the output voltage will be disconnected. Additionally, the output voltage can be adjusted using a single resistor.ConclusionThe MAX6466UK31+T is an ideal solution for providing reliable overvoltage and temperature protection in a variety of applications. It offers a robust OVP circuit along with an accurate temperature sensing block, and is easy to set up and configure. The adjustable OVP threshold and reset signal voltage make it a versatile solution for any system. It provides a simple yet effective way to protect sensitive systems from the potentially damaging effects of overvoltage and overtemperature.

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