XC6123E644ER-G

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PMIC (Power Management Integrated Circuit) supervisors are electric circuits that are used to protect integrated circuits and their systems from damage due to a variety of external stresses such as overvoltage, overcurrent, and temperature fluctuations. They are designed to monitor the system’s voltage, current, and temperature and open, shut down, or reset the circuitry to ensure only safe voltages, current levels, and temperatures are used and maintained. The XC6123E644ER-G is a supervisor IC that is specifically designed to operate over a wide range of supply voltages from 2.5V to 40V. It is used in a variety of applications, including industrial and automotive for power supply, motor drive, and charging systems.

The XC6123E644ER-G has an internal voltage supervisor circuit which is composed of a voltage supervisor and an input latch. It also has an internal current supervisor circuit which is composed of a current protection circuit, a temperature protection circuit and a current sense circuit. The voltage supervisor is composed of a control circuit, an exclusive-OR gate, a reference voltage, and a flip-flop in a series connection. It monitors the voltage of the power supply and responds to any sudden changes in it. If the voltage drops below or exceeds a predetermined voltage, the voltage supervisor will shut down the circuit. The input latch stores the state of the voltage level when the supervisor is activated.

The current protection circuit is composed of two comparators and two transistors. It monitors the current in the system, and turns on or off the transistors according to the state of the comparators. If the current exceeds a predetermined limit, the circuit will shut off, protecting the system from overcurrent damage. The temperature protection circuit is used to protect the circuit from overheating and dangerous temperatures. It consists of a temperature sensor, amplifier, and latch circuit. If the sensed temperature exceeds a predetermined range, the circuit will shut off.

The current sense circuit is used to detect overcurrent conditions in the system. It is composed of a voltage divider, voltage converter, and current comparator. When the current in the system exceeds the predetermined limit, the voltage divider will divide the voltage, and the converter will convert the divided voltage into a current value. Then the comparator will detect the value and output a signal to shut down the system.

The XC6123E644ER-G is a versatile supervisor IC that combines all these circuits together to provide complete protection for a variety of systems and applications. It is ideal for use in industrial and automotive power supplies, motor drives, and charging systems, and provides a reliable system for controlling power supply voltages, current levels, and temperatures.

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