XC6121C219MG-G

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The XC6121C219MG-G is an IC (integrated circuit) from the Supervisors range of power management ICs, also known as PMICs, from Diodes Incorporated. The IC, commonly found in a SOT-23-5 package style, is designed specifically to be used in dedicated batteries, standby power supplies and linear battery charger applications. It performs the functions of switching, current limiting, linear regulation and over-current protection, as well as offering short-circuit protection, battery reverse polarity protection and fault detection.

The XC6121C219MG-G’s main task is to monitor the charge and discharge of a battery as well as protect it against several faults/failures such as over-current, over-voltage and short-circuit. It also provides low battery detection. It is an ideal embedded system for managing power on battery-powered devices and ensuring their safe operations.

The XC6121C219MG-G includes a precision internal voltage reference which acts as the reference for the outer reference divider and internal charge current sense amplifier. The supply voltage and reference voltage are connected to the inner ring of the transformer, while the battery voltage is connected to the outer ring. The internal charge current sense amplifier can measure the current flowing in the battery, while the outer reference divider sets and adjusts the output voltage. The internal comparator compares the charge current and the voltage output, and accordingly, the device outputs the appropriate power to the battery.

The charging protection and fault detection functions of the XC6121C219MG-G provide strong protection for the battery and charger system. It seamlessly detects over-current conditions and automatically reduces the charge current. It also detects the occurrence of open or short on the input power and output line, and responds by suspending the charge supply. This prevents damage to the battery and other components, increasing the safety and reliability of the system.

The XC6121C219MG-G includes a low quiescent current and an adjustable current limit. The device has a switching frequency of up to 1MHz and can supply up to 500mA of charge current at 5V voltage output. The XC6121C219MG-G is designed to operate over a wide temperature range and offer superior electro-magnetic compatibility. This makes it ideal for use in high reliability applications, such as medical devices, consumer electronics and automotive applications.

In summary, the XC6121C219MG-G is a powerful and reliable IC which offers a number of features and functions. It is designed for use in battery charging and protection systems, as well as other power management applications. Its low quiescent current, wide operating temperature range, fault detection, low battery protection, and other features make it an ideal choice for a range of consumer, automotive and medical systems.

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