XC6122C640ER-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:	1.6 s Typical
Voltage - Threshold:	4V
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	6-UFDFN Exposed Pad
Supplier Device Package:	6-USPC (1.8x2)

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Introduction to XC6122C640ER-G

XC6122C640ER-G is a low dropout regulator (LDO) by Xecom. It is a supervisor of battery power supply for consumer electronics and other handheld devices, such as mobile phones, PDAs and digital cameras. As LDO supervisor, it can operate from a wide input voltage range, providing up to 3A of current when a load is placed on it. It is also equipped with an internal pull-up resistor, digital fault protection circuit, user selectable slew rate and a low quiescent current of typical 50µA. In order to provide extra protection against unexpected events, the XC6122C640ER-G includes over current protection and over voltage protection.

Features and Benefits

XC6122C640ER-G provides extra protection against unexpected events. It features ultra low dropout voltage, over current protection, over voltage protection and reverse current blocking. It has an internally set current limit, and its quiescent current is very low - typically 50µA. This allows users to turn the device on and off without the need for an external logic or protection circuit.Its user selectable slew rate, combined with its low quiescent current, help minimize unwanted output voltage spikes and transients. It also prevents current spikes from arising during sudden changes of load. XC6122C640ER-G supports input voltages from approximately 2.2V to 16V. With its 3A current limit, it is ideal for powering small to medium loads at voltages between 3.0V to 13.5V.

Applications of XC6122C640ER-G

XC6122C640ER-G is a perfect fit in applications demanding maximized safety, reliability and efficiency under extreme environmental circumstances. It is widely used in a range of applications, including:

• Mobile phone & PDA power management:
This includes the regulation of the battery voltage and the intermittent switch between battery-mode and load-mode.
• Digital Cameras:
XC6122C640ER-G can be used for providing power to both the camera\'s digital and analog components.
• Digital Cameras:
XC6122C640ER-G can be used for providing power to both the camera\'s digital and analog components.
• Wearable devices:
XC6122C640ER-G is used for power management for wearables such as fitness trackers, heart-rate belts and wrist-mounted sensor systems. Its ultra low quiescent current prevents rapid power consumption, prolonging the battery life.
• Industrial and automotive applications:
XC6122C640ER-G is ideal for applications requiring high efficiency and a wide input voltage range. It is used for the management of the voltage when sensors, actuators and other electronic components need to be energized.

XC6122C640ER-G Working Principle

XC6122C640ER-G works in the following way:

• Input voltage:
It takes an input voltage between 2.2V and 16V.
• Gain Voltage:
The internal resistor divider creates a gain voltage of nominally 0.5V.
• Error Amplifier:
The error amplifier amplifies the difference between the output voltage and the reference voltage to the required gain and sends it to the power switch.
• Power Switch:
The power switch is enabled when the error amplifier output is higher than a certain threshold.
• Output Voltage:
The output voltage is then regulated to the set point.

The XC6122C640ER-G provides extra protection against unexpected events, such as a malfunctioning external circuit or an overcurrent. It has an internal pull-up resistor set at 3A and can automatically shut off when the current limit is exceeded. It also provides over-voltage protection at 16V.

Conclusion

The XC6122C640ER-G is an extremely versatile low dropout regulator (LDO) by Xecom that works as a supervisor of battery power supply for consumer electronics and other handheld devices such as mobile phones, PDAs and digital cameras. With its wide input voltage range, user selectable slew rate and low quiescent current, it is ideal for powering devices in a variety of applications. It also provides extra protection against unexpected events.

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