XC6119C20A7R-G

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Voltage Detector
Number of Voltages Monitored:	1
Output:	Push-Pull, Totem Pole
Reset:	Active Low
Reset Timeout:	Adjustable/Selectable
Voltage - Threshold:	2V
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	4-UDFN
Supplier Device Package:	4-USPN (0.90x1.2)

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Introduction
The XC6119C20A7R-G is a supervisor integrated circuit (IC) from the XC6119 series which provides battery backup, power-on reset and overvoltage protection. It is a dedicated power management IC (PMIC) which is specially designed for embedded systems, with features ranging from basic reset to sophisticated power sequencing and monitoring. This paper will focus on the application field and working principle of the XC6119C20A7R-G.

Application Field
The XC6119C20A7R-G can be applied to various applications due to its versatility and cost-effectiveness. It provides comprehensive protection for embedded systems including automotive and industrial applications that utilize batteries, AC/DC converters, relays, power supplies and other power-intensive elements.

In automotive applications, the XC6119C20A7R-G offers protection from overvoltage, overcurrent and reverse polarity. It features an adjustable pre-delay for avoiding false triggering of reset and a low quiescent current. These features enable it to integrate smoothly with automotive systems, providing reliable safety for their operation.

The XC6119C20A7R-G is also used in 4G/5G base station systems and other network communications, where it is able to detect short circuit and surge voltage with the additional protection features. Additionally, the XC6119C20A7R-G supports smart power sequencing, making it suitable for use in industrial automation and semi-permanent products such as appliances, vending machines and other electronic systems requiring selectable and/ or adjustable power-up and power-down sequencing.

Working Principle
The XC6119C20A7R-G operates on a 3.0V to 5.5V operating voltage and can manage a supply current of up to 2A. Its operation consists of 4 key components: reset control, power supply system control, overvoltage protection and battery/backup control.

The reset control block monitors the CON pin voltage and activates a reset signal when the voltage drops below a certain threshold. This threshold is adjustable from 0.5V to 5.0V in 10mV increments. The power supply system control monitors the PWR and EN pins to control the power supply on/off. When the voltage is above the threshold, the power is activated, and when the voltage is below the threshold, the power is shut off. The overvoltage protection block monitors the IN pin voltage and cuts off the power supply when it exceeds a certain voltage.

The battery/backup control block is responsible for providing a backup system in the event of a power outage. It monitors the battery voltage and activates an output signal when it drops below a certain voltage. The output signal can be used to turn on a backup power source and also to indicate that a power failure has occurred.

Conclusion
The XC6119C20A7R-G is a versatile series of PMICs which is suitable for a variety of applications. It contains various components, such as reset and power control, overvoltage protection, and battery/backup control, which provide comprehensive and reliable protection for embedded systems.

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