MCP1321T-46CE/OT

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Power management integrated circuits (PMICs) are one of the most important components of any device. They are designed to regulate and monitor the power supply of a device, ensuring that it operates consistently and with the appropriate amount of power. A PMIC is a compact integrated circuit which contains both analog and digital circuit elements which are optimized to intelligently control and optimize power flow. Each of the functions in a PMIC is dedicated to direct, monitor and control power within a device. PMICs are mostly used in mobile, portable and wearable applications.The PMIC range includes devices for power supply management, power sequencing, power switches, and power monitoring such as current protection, voltage monitoring and thermal protection. Among these, a new member of the PMIC family is the MCP1321T-46CE/OT supervisor, a device designed to protect embedded systems. The MCP1321T-46CE/OT supervisor is a low-cost, ultra-low power, low-input voltage supervisor suitable for a wide range of applications.

Application Fields of MCP1321T-46CE/OT

The MCP1321T-46CE/OT supervisor is a low-cost, ultra-low power, low-input voltage supervisor designed to protect embedded systems, such as portable electronics and industrial applications. The device is a precision voltage detector that can provide reliable protection of a powered device from unexpected power supply anomalies by allowing software to take appropriate action in the event of a power supply fault. It is a mature, cost-effective solution for embedded systems requiring good voltage precision, accurate reset delay delay, low power consumption, and high-temperature operation.

The MCP1321T-46CE/OT supervisor is suitable for powering and supervising digital systems in harsh environments. Examples of applications include industrial and automation systems, handheld and wearable devices, automotive systems, and IoT equipment. The device offers various features that make it suitable for a variety of applications. It has a wide operating voltage range of 2V to 5.5V, and a low standby quiescent current of less than one microampere. It also features an ultra-low response time of 12ns, a minimum pulse width of 200ms, a reset asserted voltage of 2.18V, and a reset de-asserted voltage of 3.13V.

Working Principle

The MCP1321T-46CE/OT supervisor is a precision voltage detector used to protect embedded systems from unexpected power supply anomalies. The device monitors the VCC voltage of a system and issues a reset when the internal VCC voltage drops below a predetermined voltage level. This reset is an active low signal and when it is asserted, it causes the reset signal of all system peripherals to be held low until the reset signal is de-asserted. The reset output can also be easily connected to the microcontroller’s reset pin, ensuring that all devices are initialized properly. The supervisor includes an internal bandgap reference and a precision comparator that can accurately detect the VCC voltage.

The device offers various features which make it suitable for a variety of applications. It has an ultra-low response time of 12ns, a minimum pulse width of 200ms, a reset asserted voltage of 2.18V, and a reset de-asserted voltage of 3.13V. It also has two frequency configuration pin selections to enable the detection of low frequency input voltages and support manual reset function. In addition, there are built-in watchdogs to reset the system in the event of a crash. The MCP1321T-46CE/OT supervisor also offers a wide operating temperature range of -40°C to +85°C, making it suitable for use in extreme temperature environments.

Conclusion

The MCP1321T-46CE/OT is a cost-effective, low-input voltage supervisor designed to protect embedded systems from unexpected power supply anomalies. It is suitable for a wide range of applications, including industrial and Automation systems, handheld and wearables, automotive systems, and IoT equipment. The device features a wide operating voltage range of 2V to 5.5V, a reset asserted voltage of 2.18V, a reset de-asserted voltage of 3.13V, a low quiescent current of less than one microampere, a minimum pulse width of 200ms, and a wide operating temperature range of -40°C to +85°C. This makes it an ideal choice for powering and supervising systems in harsh environments.

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