MCP1316T-25LE/OT

The MCP1316T-25LE/OT is a supervisor which comes from Microchip’s supervisory range. It is part of the PMIC - Supervisors category of semiconductor components. The MCP1316T-25LE/OT is specifically designed for providing a power source for applications operating from a single power source (1.8V to 5.5V) and for detection/re-setting of open or short-circuit conditions for low-voltage circuits. The external connections to the MCP1316T-25LE/OT are minimal, making it easy to integrate and use in the development of various low power systems.

The MCP1316T-25LE/OT is designed for applications where power sequencing, power-on reset and thermal protection are necessary. The supervisor combines a high-accuracy reference voltages and monitoring comparators, a power-on reset generator, and a thermal protection circuit.

As far as the applications are concerned, the MCP1316T-25LE/OT is primarily used in portable devices. It ensures that the power-up sequencing is correctly performed and monitors the battery voltage level. It also provides reliable protection against voltage transients and over-current events.

The working principle of the MCP1316T-25LE/OT is based on the reference voltage generated by the internal +4.4V voltage reference, also known as the LDO (low drop-out) regulators. The LDO is designed to keep the reference voltage stable, even during large input voltage variations. The reference voltage (VREF) is then compared to two levels of thresholds (VTH1 and VTH2) to determine the reset output (RESET). If the VREF voltage falls below the VTH1 threshold, the reset output (RESET) will go low.

As for the thermal protection circuit, it sample the temperature of the device and will allow the user to set two levels of thresholds. The first threshold is considered the "warning" level (TWARN), which will cause the reset output (RESET) to go low when the temperature exceeds the set value. The second threshold (TSHUTDWN) will cause the device to completely shut down when the temperature reaches the set level.

The MCP1316T-25LE/OT supervisor can be extended using optional components such as the TEEFQ5701A29 Thermistor. The thermistor provides temperature measurement with 0.1°C accuracy and can be used to detect thermal conditions in the system, as well as for monitoring the temperature of the device.

In conclusion, the MCP1316T-25LE/OT supervisor is a powerful and reliable component which is perfect for a range of portable device applications, from power-up sequencer and power-on reset to thermal protection. With its highly accurate reference voltage generation and monitoring comparators, and its low-maintenance thermal protection circuit, the MCP1316T-25LE/OT supervisor provides reliable protection against open or short-circuit conditions and against surge and over-current events.