DS1819CR-20+T&R Integrated Circuits (ICs)

PMIC - Supervisors can be used in various applications. The DS1819CR-20+T&R is one type of PMIC - Supervisors that has a variety of usages. This article will explain the application field and working principle of this specific device.

Application Field

The DS1819CR-20+T&R is an integrated supervisor chip used to monitor the power supply or system reset condition of high-end servers and portable computers. This device provides intelligent power-on reset, an external-reset pin, an internal voltage detector, an additional voltage detector, an adjustable delay timer, and an internal temperature sensor.

These features of the device allow it to be used in various application fields. For instance, it can be used for key management, system voltage monitoring, as a reset controller, and for over/under voltage detection. This device can also be used for overclocking which utilizes the adjustable delay timer.

Working Principle

The DS1819CR-20+T&R is an intelligent power-on reset device wherein it uses to control the system reset conditions such as power-on reset, external reset, voltage low, voltage high, and over-temperature. The integrated features allow the device to handle these inputs independently.

When the power supply voltage enters a specific range of values, the device activates the integrator circuit. The integrator then sets a flag indicating the low power state. When the power supply is within the operating range, the integrator is reset, and the corresponding flag is then set. The control circuit additionally provides a reset signal to the reset pin, which generates a reset pulse. This pulse drives the reset output, indicated by the RESET pin.

The internal voltage detector feature of this device is used to detect the voltage value of the power supply and it sets the low voltage thresholds. The additional voltage detector feature is used to detect the input voltage value from an external source. This feature sets an adjustable voltage monitor, used in situations with an adjustable voltage.

The adjustable delay timer is used to delay the power-on reset signal. This can also be used for particular applications such as overclocking. The internal temperature sensor of the device is used to detect temperature levels, and it throttles the clock speed if the sensed temperature is too high.

Conclusion

In conclusion, the DS1819CR-20+T&R is an integrated supervisor device used for various applications such as key management, system voltage monitoring, as a reset controller, and for over/under voltage detection. This device utilizes the internal voltage detector, adjustable delay timer, and internal temperature sensor to handle these inputs independently. Additionally, the device can be used for overclocking which utilizes the adjustable delay timer.