MIC6315-40D3UY-TR

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PMIC - Supervisors are designed to protect systems where continuous monitoring of power supply stability and integrity of digital signals is required. A commonly used component in this category is the MIC6315-40D3UY-TR, a low-cost voltage monitor in a small 8-pin surface mount (SMT) package.

The MIC6315-40D3UY-TR is an integrated Voltage Supervisor designed to monitor and compare the band gap voltage of an external input to a factory-trimmed reference voltage. This trim technology is precision-trimmed to ensure that the output trip voltage has high accuracy at temperatures ranging from -40°C to +125°C.

This device has high accuracy tolerance over the industrial temperature range, making it a suitable option for a range of different monitoring applications. It provides over-voltage protection and reset outputs, with a window detector (WD) feature for monitoring intermediate voltage levels in applications like temperature protection. The MIC6315-40D3UY-TR also features an adjustable reset timer, allowing for a selectable delay window between application supply reset and power-on reset events.

The MIC6315-40D3UY-TR is suitable for a wide range of applications where monitoring of power supply stability is required. This includes computers, communication devices, data storage systems, industrial machines, and embedded systems. It can be used as a power supply monitor, temperature protection device, and reset controller.

The working principle of the MIC6315-40D3UY-TR is centered around a band gap voltage reference. The band gap voltage reference is used, in conjunction with a comparator circuit, to compare the voltage of an external input voltage with a factory-trimmed reference voltage. The comparator is then configured to provide outputs which can be used to control reset signals in the application.

The reset output can either be an active low type (where the output is driven to a low voltage level when the band gap voltage is exceeded), or an active high type (in this case the output goes to a high voltage level when the band gap voltage is exceeded). The window detector can be used to monitor intermediate voltage levels in order to provide an added level of protection in applications with temperature dependencies.

The MIC6315-40D3UY-TR also features an adjustable reset timer, allowing for a selectable delay window between application supply reset and power-on reset events. This timer is designed to provide additional protection against system noise or glitches that could cause a reset signal to wrongly trip. This helps ensure that the system maintains stability in the event of a power supply glitch or interruption.

In conclusion, the MIC6315-40D3UY-TR is an effective Voltage Monitoring Supervisors. It provides reliable protection for a variety of applications and can be used as a power supply monitor, temperature protection device, and reset controller. It has a high accuracy tolerance over a wide temperature range, making it suitable for use in mission critical and industrial applications where precise monitoring of power supply stability is required.

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