MAX6337US23D3-T

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Simple Reset/Power-On Reset
Number of Voltages Monitored:	1
Output:	Open Drain or Open Collector
Reset:	Active Low
Reset Timeout:	100 ms Minimum
Voltage - Threshold:	2.3V
Operating Temperature:	-40°C ~ 125°C (TA)
Mounting Type:	Surface Mount
Package / Case:	TO-253-4, TO-253AA
Supplier Device Package:	SOT-143-4
Base Part Number:	MAX6337

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MAX6337US23D3-T Application Field and Working PrincipleThe MAX6337US23D3-T is a Micro Power Supervisory and Sequencing Circuit that is classified as a part of Power Management IC (PMIC) – Supervisors. PMICs are devices that maintain an appropriate system power state according to the functioning of an embedded system or a supervisory system. The MAX6337US23D3-T’s main job is to help in maintaining an appropriate system power state by providing overvoltage protection and reset sequencing to the system.Application FieldThe MAX6337US23D3-T is specifically designed for application in high density, cost sensitive Networking systems and Embedded Applications. This tiny, low power device is suitable for use in application specifications where features such as protection against overvoltage conditions, system power sequencing, resetting reliably under a wide range of operating conditions, are of prime concern. The application range of MAX6337US23D3-T includes portable battery operated applications, automotive systems, and industrial control systems. Features and BenefitsThe MAX6337US23D3-T comes equipped with features that provide multiple benefits to its users. Its features include an accurate active-high reset output, 60mV to 120mV reset threshold window for resetting reliably, a low reset output active-high active-low reset and also inverse polarity protection. The MAX6337US23D3-T device also has an integrated timeout feature that provides a trusted reset event. Other beneficial features include low quiescent current (1µA max), low reset output voltage (Vreset = 0.7V max), reset active-high active-low pin with both level and pulse reset, reverse battery protection and an active-low Power-Good Output with an unfolded current range up to 60mA. The device also has an excellent voltage range (1.8V to 5.5V).Working PrincipleThe working principle of MAX6337US23D3-T lies in the power detection and processing circuit which comprises of Voltage Detectors, Comparators and a Delay circuit. The device monitors the input voltage for errors and/or faults such as power supply overvoltage, undervoltage, lost supply, and unexpected reset signals. In case of any error or fault, the device immediately sends out a reset pulse of about 135ms duration which ensures the reliable resetting of the system. The device typically comes in an 8-pin SOIC package. It has five voltage detector circuits, an adjustable RST input, an integrated timeout delay and two active-low outputs (RST and PWRGD). The PWRGD output is an active-low open-drain output with an unfolded current capacity of up to 60mA. The device also has an adjustable power-on reset feature with a reset-active threshold window between 60mV and 120mV and a reset output voltage between 0.7V and 0.8V across a temperature range of -40°C to +85°C. The MAX6337US23D3-T is also built with ESD protection fromhuman body model up to 4kV. ConclusionThe MAX6337US23D3-T is a tiny low-power device suitable for high density and cost-sensitive Networking systems and Embedded applications. It provides multiple safety features such as protection against overvoltage and undervoltage conditions and reset sequencing to the system. Its working is based on power detection and processing circuit which comprises of Voltage Detectors, Comparators and a Delay circuit. The device monitors the input voltage for errors and/or faults and sends out a reset pulse of about 135ms duration to reliably reset the system. It also has an excellent voltage range (1.8V to 5.5V), low quiescent current (1µA max), adjustable RST input and low reset output voltage (Vreset = 0.7V max). Due to the multiple features and low cost, the MAX6337US23D3-T is ideal for small, portable, battery operated and automotive systems as well as industrial control systems.

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