MAX6307UK26D2-T

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The MAX6307UK26D2-T is a 3.3-V, 10-pin microprocessor (µP) reset supervisor with an active-low, manual-reset input, Push button and open drain reset output. This reset supervisor is part of Maxim Integrated’s family of PMIC (Power Management ICs) designed to protect microprocessors from deleterious effects during power-up, power-down, and faults. The MAX6307UK26D2-T is a high-performance supervisor IC that offers a reset-output monitor, dedicated open-drain reset that is asserted for a minimum duration of 72 ms for power-on reset (POR) protection and superior reset-monitor accuracy of ± 350-mV from reset threshold to reset assertion. It provides a controlled reset pulse width of 8 ms (typical) during power-on reset, power-down reset, and manual reset. It is equipped with a high-accuracy, low-power dual high-threshold voltage monitoring circuitry with a 0.25% accurate monitor voltage, making it an ideal solution for various computer and consumer applications.

The MAX6307UK26D2-T can be used to guarantee a minimum reset-margin for µP systems, regardless of final voltage stability (or lack thereof). This provides a power-supply supervisor that reset the microprocessor whenever the power supply falls below the reset threshold. It also provides power-on reset protection that increases the likelihood of system initialization. It also monitors voltage brownouts by maintaining that the microprocessor has restarted correctly in the event of an undervoltage shutdown. The MAX6307UK26D2-T also features low-voltage detect with hysteresis that can be used to detect and alert the user of an input voltage drop.

The MAX6307UK26D2-T also features programmable reset timeout feature, where the output will stay asserted as long as the input voltage is less than the reset threshold plus the timeout voltage. This ensures that the reset output asserts low after a period of undervoltage, even if the input voltage eventually recovers. In addition, the manual reset input (MR) can be used to initiate a reset sequence. The combination of these features allows the MAX6307UK26D2-T to provide comprehensive system reset functionality.

The MAX6307UK26D2-T is designed for applications such as portable computers, digital cameras, high-definition television sets, and many other applications requiring a reset supervisor IC. It is capable of providing fast, reliable µP reset for several applications and is offered in small, lead-free packages. By optimizing the on-chip feature sets, including the POR sequence and timeout feature, the MAX6307UK26D2-T is an ideal solution for microprocessor systems needing protection from voltage brownouts and overvoltage conditions.

The working principle of the MAX6307UK26D2-T is based on dual monitor circuitry. The upper and lower threshold circuits monitor the power supply voltage while the reset circuit asserts a reset signal whenever either of the two monitor inputs voltage dips below the reset threshold voltage. A timeout circuit is also included to delay the de-assertion of the reset pulse. The reset timeout value can be programmed and adjusted via external resistors for precise timing.

In summary, the MAX6307UK26D2-T is a high-performance microprocessor reset supervisor designed for use in many different applications. It is equipped with a dual high-threshold voltage monitor, programmable reset timeout feature and manual reset input to provide comprehensive system reset protection. The MAX6307UK26D2-T is a low-power, high-accuracy device that offers configurable reset timing, improved reset accuracy and ample POR protection for various computer and consumer applications. It is offered in a lead-free package that decreases the cost and complexity of system design.

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