NCP303LSN36T1

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The NCP303LSN36T1 is a low-dropout (LDO) passive supervisor device that is part of the PMIC -- Supervisors product family. It is designed to monitor and maintain the voltage levels in equipment, such as a computer system, to keep them within a designated range. In this way, the device ensures a reliable and safe operation for the device being monitored.

The device is composed of a 3-pin SOT-23 package and has a maximum output current rating of 36 mA. It provides an internal reference voltage dropout window of 0.2V to 1.2V and has an adjustable voltage supervisor that can be programmed to different voltage levels. The adjustable voltage supervisor allows for control of the voltage level within the range of 0.8V to 8V.

The device is equipped with a TTL compatible reset output and an open drain output that can be used to indicate an undervoltage fault condition. It has a fast detection time of typically 140 µs, making it suitable for use in high-performance applications. Furthermore, the device is capable of handling up to 6V input voltage and has an operating temperature range of -40°C to 125°C.

The NCP303LSN36T1 is primarily used in applications that require reliable power monitoring, such as computers, routers, switches, telecommunications, and storage systems. In these applications, it can be used to monitor the system’s voltage levels and to prevent over- or undervoltage faults, thereby ensuring a safe and reliable operation.

The working principle of the NCP303LSN36T1 is relatively straightforward. The three pins present in the SOT-23 package are the input voltage pin, the ground pin, and the reset output pin. The input voltage pin is connected to the system’s power source, while the ground pin is connected to ground. The reset output pin is connected to a reset line of the system, which is triggered when an undervoltage condition is detected. When the input voltage falls below the preset threshold, an internal comparator will force the reset output pin to a logic low level, triggering the reset line. Once the voltage is restored to the preset level, the reset pin will be released, restoring the system to its normal operation.

In conclusion, the NCP303LSN36T1 is a low-dropout passive supervisor device that is part of the PMIC - supervisors family. It is designed to monitor and maintain the voltage levels within a designated range and is primarily used in applications that require reliable power monitoring. Furthermore, it has a fast detection time, can handle up to 6V input voltage levels, and has an operating temperature range of -40°C to 125°C.

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