MAX6309UK30D4+T

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The MAX6309UK30D4+T is an advanced microcontroller supervisory circuit and reset generator designed specifically to monitor microprocessor core\'s VCC. This device is classified as a PMIC – Supervisors and is designed with various features that make it efficient and safe. The MAX6309UK30D4+T offers the flexibility of a system reset on low or high, single or dual supply operation. It also eliminates the need for an external reset pulldown or pullup resistor or supply disconnection and reconnection.

Application Fields

The MAX6309UK30D4+T is typically used in applications that require reliable Core voltage monitoring, such as microprocessor-based systems, communications systems, server systems, automotive engine control, and medical systems. In some applications, it is required to ensure proper start-up and reset of MCUs and other digital logic components, such as ASICs, FPGAs, and MCU cores, during power-up, power-down, brownout, and other critical events.

The MAX6309UK30D4+T is ideal for deciphering vital system data under conditions of high ambient temperature and low voltage operation. It also offers system designers the flexibility to adjust the reset voltage threshold, timeout period, timeout pulse width, and reset pulse width.

Working Principle

The MAX6309UK30D4+T uses a voltage comparator and a reset timer to detect power-up, power-down, or brownout conditions and generate a reset pulse accordingly. A microprocessor core\'s VCC is connected to the voltage divider network. The VDIN voltage is compared to the set threshold voltage (VTH) to determine whether to initiate the reset sequence by activating the reset timer. The timeout period is adjustable with a capacitor connected to the TIME pin. Once the timeout period is reached, the reset timer is triggered, and a reset pulse is issued.

The reset pulse width is adjustable by connecting a resistor between the PWRON pin and the RESET pin. The MAX6309UK30D4+T is also able to detect a fault condition on its VCC supply line, in which case no reset pulse is issued.

The MAX6309UK30D4+T also offers additional features such as under-voltage lockout, over-voltage lockout, and power fail output, as well as a fast response time and wide operating temperature range.

Conclusion

The MAX6309UK30D4+T is suitable for use in applications that require reliable Core voltage monitoring, such as microprocessor-based systems, communications systems, server systems, automotive engine control, and medical systems. It has been designed with various features that make it efficient and safe, such as adjustable reset voltage threshold, timeout period, timeout pulse width, and reset pulse width. Additionally, it offers additional features such as under-voltage lockout, over-voltage lockout, and power fail output, as well as a fast response time and wide operating temperature range.

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