MAX6337US16D3+T

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The MAX6337US16D3+T is an advanced microprocessor supervisory circuit (PMIC - Supervisors) designed to monitor MCU activity and system power, providing reset signal in case of a power or software fault. It features a low quiescent current, latched reset output, low reset threshold and tolerance to latency, making it the perfect choice for monitoring the power supply of complex solutions.

Overview of MAX6337US16D3+T

The MAX6337US16D3+T is a voltage supervisor IC with a wide operating voltage range of up to 16VDC. It offers a typical reset threshold of 0.7VDC, reset timeout limits of 8 minutes and 2 seconds, low active supply current of only 5µA and a low quiescent supply of 200µA. It also offers excellent reset accuracy and guaranteed minimum reset timeout while keeping latched reset output during power-down. The supervisory circuit has an integrated low-noise comparator input Pin 3 and an output Pin 1 that drives a reset signal whenever the voltage at input drops below the reset threshold. It also supports industrial and automotive temperature ranges of -40°C to +125°C.

Features of MAX6337US16D3+T

• Wide operating voltage range: from 0.9VDC to 16VDC
• Latched reset output
• Low quiescent current: only 200µA
• Low reset threshold of 0.7VDC
• Integrated low-noise comparator input
• Guaranteed minimum reset timeout
• Temperature range: -40°C to +125°C

Applications

The MAX6337US16D3+T is ideal for applications that require precise monitoring of the power supply system such as servers, embedded systems, mechanical, electrical and industrial control systems, etc. It is also used in automotive and medical applications such as diagnostic and monitoring systems where safe operation requires the reset of the MCUs or ASICs in case of system power or software fault.

Workings of MAX6337US16D3+T

The MAX6337US16D3+T is a voltage monitoring device that continuously compares an input voltage to a fixed threshold level of 0.7VDC. The control circuit inside the IC is designed to monitor the voltage supply and throw an output at the reset pin whenever it drops below the preset threshold. By doing this, it ensures that any drift in the power supply or faults in the system are detected instantly and reset is generated. This reset signal then actuates the system reset mechanism and triggers a new start up cycle, preventing any potential damages that could have been caused due to the minor power glitches.

The MAX6337US16D3+T also implements a delay timer with an adjustable RESET_timeout up to 8 minutes. The reset pin is removed whenever there has been an interruption in the power supply for prolonged periods. The integrated low-noise comparator ensures a precise detection of voltage drop, even when noise levels are high due to switching power supplies. This ensures that false system resets are not triggered and the optimum reset resolution is achieved.

Conclusion

The MAX6337US16D3+T Microprocessor Supervisor Circuits are a cost-effective solution for controlling the power supply of any system. It ensures the safety and stability of any system by maintaining the power supply levels and resetting the MCUs and ASICs in case of power or software failure. It is widely used in industrial, automotive, and medical applications and offers a wide operating range of up to 16VDC, low active supply current of only 5µA, and excellent reset accuracy with guaranteed minimum reset timeout.

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