XC6121E742MR-G

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Watchdog Circuit
Number of Voltages Monitored:	1
Output:	Open Drain or Open Collector
Reset:	Active Low
Reset Timeout:	800 ms Typical
Voltage - Threshold:	4.2V
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	SC-74A, SOT-753
Supplier Device Package:	SOT-25

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Introduction

XC6121E742MR-G is a voltage supervisor, which belongs to PMIC - Supervisors. It is designed to provide a single, low cost, low power solution to protect against uncontrolled power up and power down events. It monitors the VCC voltage to detect out of range values and can trigger a reset upon such occurrences. It also features the ability to reset itself upon power up or when the reset signal is pulled high. XC6121E742MR-G can be used in a variety of applications and systems such as embedded processors, middle level products, and PCs.

General Description

XC6121E742MR-G is a low drop out (LDO) voltage supervisor IC with a built-in over-voltage protection function. It is able to maintain a stable output voltage over a wide input voltage range, making it suitable for use in all types of systems. XC6121E742MR-G is designed to provide a single and cost-effective, low-power solution to protection against unexpected and uncontrolled power events, including power up and power down. It also features a low current consumption, enabling its use in portable systems and devices.

ApplicationFields

XC6121E742MR-G is suitable for a wide applications and systems such as embedded processors, middle level products, and PCs. It can also be applied to automotive systems, as it is able to provide a safeguard from short or long duration power glitches. In addition, XC6121E742MR-G is used in applications that require voltage monitoring, such as those that utilize a microcontroller or other control device in order to monitor and control system voltages.

Working Principle

The XC6121E742MR-G voltage supervisor works by monitoring the VCC voltage to detect out of range values and will automatically trigger an output reset if the voltage goes higher or lower than the preset voltage range. This product is designed with a low current consumption, enabling its use in portable systems and devices. It features an active low (RESET) output, which is pulled high when normal operating conditions are met, and pulled low upon an out of range voltage detection.XC6121E742MR-G also features the ability to reset itself upon power up, as well as upon the reset signal being pulled high by the user. The RESET signal is active low and its rising edge is synchronization with the device’s VCC pin, indicating that the device is in a calibrated state. The RESET signal stays low as long as the VCC is within the predefined range, allowing for safe system entry.The XC6121E742MR-G includes an adjustable over-voltage protection function which monitors the VCC voltage at all times, to detect over-voltage conditions. When an over-voltage condition is detected, the RESET signal is pulled low to indicate an error.

Conclusion

The XC6121E742MR-G has been specially designed as a low cost, low power, voltage supervisor, to provide protection from unexpected and uncontrolled power events. It is suitable for a wide range of applications, including embedded processors, middle level products, PCs, and automotive systems. The XC6121E742MR-G checks for out of range voltages and can trigger a reset on detection. It also includes a adjustable over-voltage protection function, and can reset itself on power up or when the reset signal is pulled high.

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