DS1812-5/T&R

PMIC (Power Management IC) is a type of integrated circuit specifically designed to manage the power consumption of a system. Supervisors, a class of PMIC, monitor numerous voltage rail conditions within a system’s power supply and simplify the process of managing power across multiple external sources of electricity. DS1812-5/T&R is an example of a supervisor. This application note covers its application field, as well as its working principles.

DS1812-5/T&R Application Field

The DS1812-5/T&R is a supervisor designed specifically for 3.3V, 5.0V and 12V supply monitoring. It is best suited for telecom, computing, storage and industrial applications that require precise and precise power monitoring. It can monitor up to three input voltages with an accuracy of ±10 mV, which makes it an ideal choice for power-sensitive technologies. Additionally, it has an active-high reset output to ensure that the system is not compromised by sudden power fluctuations while running. It also includes a watchdog timer and power-on-delay circuit to ensure that the system is not malfunctioning due to faulty programming.

Furthermore, the DS1812-5/T&R is designed with low operating currents. This allows it to be used in a wide variety of applications, including low power applications such as medical, automotive and IoT. The comprehensive system monitoring and protection functionality offered in the DS1812-5/T&R can significantly reduce board complexity and cost across its application field.

DS1812-5/T&R Working Principle

The DS1812-5/T&R uses an analog-to-digital converter to monitor input voltage for accurate voltage monitoring. It is designed with an adjustable watchdog timer and reset threshold index to prevent system malfunctions due to incorrect shutdown procedures or programming errors. The reset output is activated when the monitored voltage falls below the pre-set threshold. It also has three power-on delay circuits to provide extra protection against voltage inrush.

Additionally, the DS1812-5/T&R is designed with over-current protection and fault timeout capability. This allows it to immediately shut down an overloaded voltage rail, preventing system damage due to excessive current draw. In addition, the fault timeout circuit allows the power system to continue running after a specific fault has been detected and the fault timeout circuit is engaged.

Overall, the DS1812-5/T&R supervisor provides comprehensive voltage monitoring and protection of 3.3V, 5.0V and 12V supplies. Its analog-to-digital converter allows it to monitor voltage with an accuracy of ±10 mV, making it suitable for power-sensitive applications. The adjustable watchdog timer and reset threshold index protectthe system from unnecessary power shut offs. Additionally, the over-current protection and fault timeout capability make the DS1812-5/T&R an ideal choice for modern-day applications that require wide conditions of power supply voltage.

Conclusion

The DS1812-5/T&R is an example of a supervisor PMIC designed for 3.3V, 5.0V and 12V supply monitoring. It uses an analog-to-digital converter to monitor input voltage, as well as adjustable watchdog timer and reset threshold index to ensure system protection. Additionally, it includes functions such as over-current protection and fault timeout capability to ensure protection against system malfunctions and other power-related issues. Its low operating current and comples system monitoring and protection functionality makes it an ideal choice for many power-sensitive application fields.