MAX6381LT44D3+T

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The MAX6381LT44D3+T regulator is aSupervisors product in Power Management and Interface (PMICs) category. It is used to improve system reliability and protection, and provides fault protection for digital and analog components in applications such as telecommunications, computers, and other related electronic products. This paper will discuss the application field and working principle of the MAX6381LT44D3+T regulator.

The MAX6381LT44D3+T is manufactured by Maxim Integrated and is specified for the 3V to 6V voltage range. It is the ideal solution when either a regulated voltage or a reset signal, or both, are needed. The device features reset functions, power-up/power-down sequencing, supply monitoring and system shutdown. It has a 26K ohm monitor resistor, an active low reset, a 2.15V threshold, a 600ms reset timeout duration, and an active high reset lockout pin that can be used to lock out reset during system initialization.

The MAX6381LT44D3+T is adaptable for a wide range of applications, including cellular phones, navigation systems, medical devices, and other consumer and industrial electronics. The device also features one-, two-, and three-level system reset and power-on reset time delays. It is also extremely flexible and can be used for voltage monitoring and reset functions of various devices.

The working principle of the device is quite simple. A voltage source is connected to the input terminal of the device, while the output terminal is connected to an external digital logic device or supply. The device monitors the voltage at the input terminal and sets an active low reset when the voltage drops below the specified threshold. When the input voltage returns to the normal range, the reset is de-asserted and the digital logic device is reset.

The device also features an active high reset lockout. When the lockout pin is set to high, the device will ignore any reset requests until the lockout pin has been released. This is useful for preventing inadvertent resets during system initialization. Additionally, the device features an adjustable power up/down delay. This allows the user to control the timing of reset, ensuring that all the system components are powered up in the correct order.

In summary, the MAX6381LT44D3+T is a compact and flexible power supervisor. Its advanced features, such as adjustable reset time delays and reset lockout, make it the ideal choice for applications that require reliable overvoltage and/or undervoltage protection. It is widely used in mobile, consumer and industrial devices and is a cost-effective choice for reliable power supply protection.

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