MAX6314US47D2+T

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As part of the PMIC - Supervisors family, the MAX6314US47D2+T device is used to supervise the main power supplies. It provides the best features and performance in its class of microprocessor supervisors, designed to facilitate proper system initialization, reset generation, power-on sequencing, and system reset. The features such as its accurate power-on reset (POR) timing, excellent reset voltage accuracy, low power consumption and very small package size make it the ideal choice in a wide range of applications requiring sophisticated power management.

Features

• Accurate power-on reset (POR) timing
• 1.8V to 5.5V input operating range
• Low-power consumption: 200 µA (typical) at 3V
• Very small package size: 2.4 mm x 1.8 mm SMT-8
• Excellent reset voltage accuracy
• Reset assertion when VCC falls outside of its operating range

Application

The MAX6314US47D2+T is designed for power-on reset in a wide range of microprocessor-based systems, such as home office systems, access control, industrial, automotive and networking systems. The MAX6314US47D2+T is also used in battery-backed systems, providing reliable protection of restart cycles, enabling a safe shutdown and power-on reset of the system.

Working Principle

The MAX6314US47D2+T uses an internal comparator to monitor the input voltage levels. When the input voltage level is below the reset threshold, the device will assert a reset signal for the microprocessor. When the input voltage level is above the reset threshold, the device will de-assert the reset signal, allowing the microprocessor to start up. The reset threshold is adjustable and can be set to the most optimal voltage level for the application.

In addition, the MAX6314US47D2+T also provides an output signal for delayed power-on reset. The delayed power-on reset feature enables the device to delay reset assertion until the power supplies have stabilized and all system components have had plenty of time to turn on. This feature is especially important in systems that require multiple power supplies in order to operate. The length of the reset delay is adjustable and can be adjusted to meet the desired length of time.

The MAX6314US47D2+T also features an integrated watchdog timer (WDT) to provide an additional layer of protection against system malfunctions. In case of an unexpected system hang-up, the WDT will force a system reset and thus prevent any further damage. The timer has a 14-bit programmed time-out that can be set to the desired reset timeout.

Conclusion

The MAX6314US47D2+T is an ideal device for providing effective and reliable power-on reset and system reset. With its excellent reset voltage accuracy and low power consumption, this device is an excellent choice for a wide range of applications that require sophisticated power management. Its excellent reset timing, adjustable reset delay and watchdog timer provide an additional layer of protection for system malfunctions.

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