MB3793-28APNF-G-JN-EF6E1

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Type:	Simple Reset/Power-On Reset
Number of Voltages Monitored:	1
Output:	CMOS Inverted
Reset:	Active Low
Reset Timeout:	30 ms Minimum
Voltage - Threshold:	2.8V
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	8-SOP

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MB3793-28APNF-G-JN-EF6E1 Application Field and Working Principle

Power Management Integrated Circuits (PMICs) are an important contributor in many consumer electronics, computing, and communication technologies. These integrated circuits provide maximum performance and reliability, and are highly cost-effective solutions. Supervisors, also known as Watchdog Timers, are a subset of PMICs that monitor and guarantee the correct functioning of system components. Specifically, the MB3793-28APNF-G-JN-EF6E1 is a low-voltage Supervisory Circuit that is commonly used in various kinds of microcontrollers.

Application Field

The MB3793-28APNF-G-JN-EF6E1 is most applicable in low-voltage digital design applications. Among them, microcontrollers are the device class that best utilizes the circuit’s features. The circuit is capable of single-bit, dual-bit, and triple-bit logic output, making it a versatile and compatible circuit for microcontroller systems. The MB3793-28APNF-G-JN-EF6E1 is a low-power circuit, with a minimum operating power supply voltage of 1.6V and a maximum of 5.6V. The typical quiescent current this circuit can support is 3mA. Its output is available in both open and active-high LVCMOS/CMOS compatible logic levels, which makes it relatively simple to integrate with existing MCU systems. Other special applications that make use of the MB3793-28APNF-G-JN-EF6E1 include:

• Hard-drive controllers;
• HDD and SSD storage devices;
• Microprocessors;
• Digital audio players;
• Embedded mobile applications.

Working Principle

The working principle of the MB3793-28APNF-G-JN-EF6E1 is very simple. It is essentially a watchdog timer that monitors a system’s power supply voltage and detects when the power drop exceeds a certain threshold. In such cases, the output is asserted to notify the system of the detected power drop. Additionally, an internal reference voltage circuit is used in order to ensure that the voltage is stable within certain limits. It will detect when the power supply falls below 1.1V and then reset itself, and the device will turn off automatically. This feature is built-in to prevent system malfunction in case of power drop. The circuit is equipped with low power consumption features and a wide operating voltage range. It also has a fast output switch time and CMOS compatible logic-level outputs. On top of that, the MB3793-28APNF-G-JN-EF6E1 comes with built-in ESD protection, which is important for system reliability and operation in harsh electrical environments.

Conclusion

The MB3793-28APNF-G-JN-EF6E1 is a very versatile Supervisory Circuit designed for low-voltage digital design applications. The circuit is well-suited for microcontroller systems due to its single-bit, dual-bit, and triple-bit logic output capability. In addition, the circuit has built-in protection features, such as low power consumption, a wide operating voltage range, fast output switch time, CMOS compatible logic-level outputs, and ESD protection. All these features make the MB3793-28APNF-G-JN-EF6E1 an ideal choice for various kinds of embedded applications.

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