MN13821SHP

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Type:	Simple Reset/Power-On Reset
Number of Voltages Monitored:	1
Output:	Open Drain or Open Collector
Reset:	Active High
Reset Timeout:	100 µs Typical
Voltage - Threshold:	2.5V
Operating Temperature:	-20°C ~ 70°C (TA)
Mounting Type:	Surface Mount
Package / Case:	TO-236-3, SC-59, SOT-23-3
Supplier Device Package:	MINI-3DC
Base Part Number:	MN138*

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Introduction

MN13821SHP is a low voltage compliant supervisor in the power management integrated circuit (PMIC) family of logic compatible devices. It is a Micrel, Inc. single-output high-precision voltage monitor and reset generator. This device works to ensure that when the power supply voltage is too low or reaches a predetermined voltage threshold, the device will reset the monitored voltage internally, externally and internally.The device utilizes a precision 2.0V voltage monitor and is powered from a 3.3V and 5V input range. This device also features an adjustable reset and power-on-reset pin and has low standby current for reduced power consumption.

Application fields

The MN13821SHP is a very versatile device with a wide range of applications. It is well suited for applications such as handheld communication, industrial, consumer and automotive electronics, microcontrollers, and other embedded systems.In handheld communication, it can be used to monitor cell phone power voltages, to detect out of range voltages, and reset the system before the system fails. In consumer applications, it can be used to monitor voltage output and reset the system when the power supply reaches a minimum voltage threshold.In automotive applications, the device can be used to monitor the voltage level of the electronic system and reset when power supply when the power level is too low. It can also be used in industrial applications to detect out of range voltages and reset the system before system failure.

Working principle

The MN13821SHP is a single output supervisor device with a voltage monitor and reset generator. It utilizes a precision 2.0V voltage monitor, which is powered from a 3.3V and 5V input range. This device has low standby current for reduced power consumption.The device features an adjustable voltage reset pin, the RESET pin, which signals when the power supply voltage is too low or reaches a predetermined voltage threshold. Upon reaching the threshold, the controller is reset, and the customers electronics are reset as well.The RESET pin is open-drain output and can be used with a pullup resistor for external reset. The device also features an adjustable power-on-reset pin, the POR pin, which programs the customer’s system to reset upon a specified voltage threshold.The MN13821SHP also has a built-in power-on delay function which can be adjusted by an external capacitor. This function allows the customer’s system time to initialize before power is applied.

Conclusion

The MN13821SHP is a very versatile device with a wide range of applications. It can be used in many applications such as handheld communication, industrial, consumer and automotive electronics, microcontrollers, and other embedded systems. It utilizes a precision 2.0V voltage monitor and is powered from a 3.3V and 5V input range.It has an adjustable voltage reset pin, the RESET pin, which signals when the power supply voltage is too low or reaches a predetermined voltage threshold. The device also features an adjustable power-on-reset pin, the POR pin, which programs the customer’s system to reset upon a specified voltage threshold. It also has a built-in power-on delay function which can be adjusted by an external capacitor.The MN13821SHP is a powerful and reliable tool for applications that require a degree of accuracy and control of the system’s voltage. It is well suited for many applications because of its low standby current, its adjustable reset and power-on-reset pins, and its many features and functions.

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