MAX6313UK40D2-T

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Type:	Multi-Voltage Supervisor
Number of Voltages Monitored:	2
Output:	Push-Pull, Totem Pole
Reset:	Active High
Reset Timeout:	20 ms Minimum
Voltage - Threshold:	4V, Adj
Operating Temperature:	0°C ~ 70°C (TA)
Mounting Type:	Surface Mount
Package / Case:	SC-74A, SOT-753
Supplier Device Package:	SOT-23-5
Base Part Number:	MAX6313

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Introduction to MAX6313UK40D2-T

The MAX6313UK40D2-T is a power management integrated circuit (PMIC) from Maxim Integrated which is used as a system supervisor for use in hot-swap applications. The device is optimized for point-of-load or server applications and provides a combination of overvoltage, undervoltage, overcurrent, undercurrent, over-temperature, and crowbar (short-circuit) protection. This PMIC is designed to deliver a high level of protection and accurate reset timing in a small, low-cost package. It has a user-programmable reset threshold voltage range that is adjustable between 1.2V and 5.5V.

Applications

The MAX6313UK40D2-T is a highly integrated PMIC designed for use in a wide variety of applications. It is especially suitable for processors and systems that require a high level of protection, such as those used in consumer electronics, embedded systems, medical, and industrial control. The device can be used as an alternative to a MOSFET-based supervisor in board-level protection applications. It is also suitable for use in hot-swap protection applications.

Features

The MAX6313UK40D2-T includes several features that make it an ideal solution for application in modern power management systems. These features include:* Up to 60V of power supply voltage protection* Undervoltage, overvoltage, overcurrent, over-temperature, and crowbar protections* Reset threshold voltage range of 1.2V to 5.5V in 0.05V increments* 14ns maximum reset pulse width* Internal circuitry to minimize external components* Small 2mm x 2mm 8-lead TDFN package

Working Principle

The MAX6313UK40D2-T is an overvoltage/undervoltage supervisor and crowbar protection circuit for hot-swap applications. It monitors power supply (VCC) and system power rails for overcurrent, overvoltage, undervoltage, overtemperature, and crowbar overload. When an overload is detected, the device triggers a system reset, latch off its outputs, and holds the output in a latched state until the fault condition is removed. The reset pulse width duration is user-programmable between 1.5 ms and 10 ms with an accuracy of +/-10 ns. Once the values of VCC and OVP have been programmed, the reset threshold will be triggered as soon as the voltage exceeds the programmed threshold. This ensures that all power rails are held at their correct operating conditions, thus preventing system malfunctions. The MAX6313UK40D2-T also features an internal charge pump circuit to boost the external reference (VCC) voltage. This helps to increase the accuracy of the reset threshold voltage. The built-in delay allows the voltage to settle before the supervisor output is asserted, thus preventing false reset signals from being issued.

Conclusion

The MAX6313UK40D2-T PMIC from Maxim Integrated is a highly integrated device that is ideal for hot-swap applications, and provides a high level of overvoltage, undervoltage, overcurrent, undercurrent, over-temperature, and crowbar protection. The PMIC\'s adjustable reset threshold voltage and tight reset pulse width accuracy make it ideal for use in modern processor-based power management applications. The device\'s internal circuitry and charge pump simplify the design process, making it a cost-effective solution for system designers.

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