DS1232N

Series:	MicroMonitor™
Packaging:	Tube
Part Status:	Active
Type:	Simple Reset/Power-On Reset
Number of Voltages Monitored:	1
Output:	Open Drain, Push-Pull
Reset:	Active High/Active Low
Reset Timeout:	Adjustable/Selectable
Voltage - Threshold:	4.37V, 4.62V
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Through Hole
Package / Case:	8-DIP (0.300", 7.62mm)
Supplier Device Package:	8-PDIP
Base Part Number:	DS1232

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DS1232N Application Field and Working Principle

Power management integrated circuits (PMICs) are specialized electronic components capable of delivering power to different sections of a system while also monitoring their states, allowing efficient control of various subsystems in a wide range of applications. Supervisors are one type of PMICs, designed to monitor voltage levels to detect malfunction or resets and to take necessary corrective action. Amongst supervisors, the DS1232N is widely used for its superior power-saving abilities and accurate brown-out protection.

DS1232N Overview

The DS1232N is a supervisor IC from Maxim Integrated, widely used for its low power operation and system reset capabilities. It is designed with an under-voltage lock-out system that allows it to detect the voltage level at any given time, and to take corrective action whenever necessary. This makes the DS1232N an ideal choice for applications where reducing power consumption is important. The DS1232N is typically used for voltage monitoring, brown-out protection, and resetting the system when needed. It is also capable of power sequencing and power saving in sleep mode, allowing it to provide more efficient power management in critical situations. The low current consumption of the DS1232N and its integrated hardware watchdog timer, which can be used to detect software errors, further make it a dependable IC for system performance.

Features and Benefits of DS1232N

The DS1232N incorporates several effective features, providing reliable power management:

• Brown-Out Protection: The DS1232N is designed with an under-voltage lockout system that allows it to detect the voltage level at any given time and automatically trigger a reset whenever necessary. This helps to prevent system crashes due to sudden voltage drops.
• Low-Power Mode: The DS1232N is capable of power sequencing and reducing power consumption in sleep mode to conserve energy.
• Integrated Watchdog Timer: The DS1232N features an integrated hardware watchdog timer that can be used to detect software errors and reset the system accordingly.
• Extremely Low Current Consumption: With its low current consumption, the DS1232N ensures effective power management alongside reduced system costs.

Applications of DS1232N

The versatile design of the DS1232N makes it suitable for a wide range of applications, including:

• Consumer Electronics: With its power-saving capabilities, the DS1232N can be used to monitor voltage levels, providing brown-out protection in consumer electronic devices such as smartphones, televisions, and home appliances.
• Automotive: The DS1232N can also be used in automotive applications as an effective voltage monitor, providing reliable system reset during low-voltage situations.
• Industrial: For industrial applications, the DS1232N can also provide superior power-saving abilities, making it suitable for use in industrial robots, automated machines, and power management systems.
• Medical: The DS1232N can be used in medical devices such as ventilators, infusion pumps, and monitors, allowing it to provide precise power management while ensuring safety.

Working Principle of DS1232N

The DS1232N assumes two states while operating - active and low power. When in the active state, the DS1232N continuously monitors the supply voltage, triggering a reset whenever it drops below the specified level. The reset delay time is determined by an external capacitance at pin VRST. When in low-power mode, the DS1232N’s lower consumption levels ensure effective power management. It monitors the present value of the supply voltage during this time and triggers a reset if it drops below the specified level. It typically requires a few milliseconds to detect the voltage drop and trigger the reset.When the DS1232N triggers a reset, it holds the RST/ pin at logic high for a duration, whose length can be programmed by setting the external capacitors at the RESET/ pin. After the reset is triggered, the DS1232N returns to the active mode and continues to monitor the voltage levels.

Conclusion

The DS1232N is a highly reliable supervisor IC designed for efficient power management and brown-out protection. Its ultra-low power consumption and integrated hardware watchdog timer further make it an ideal IC for a wide range of applications, including consumer electronics, automotive, industrial, and medical devices. By continuously monitoring the supply voltage, the DS1232N can detect sudden drops and trigger a reset whenever necessary in order to prevent system crashes.

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