UC3543DWG4

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UC3543DWG4 is a power electronic control integrated circuit of PMIC (Power Supply Controllers, Monitors) type developed by Texas Instruments. It is a programmable, high-current and wide-ranging power switch control circuit, primarily designed for load, digital logic, and line supply control.

Application Field

The UC3543DWG4 has been widely used in various applications due to its advantages, such as the AC/DC inverter, uninterruptible power supplies (UPS), programmable power supplies (PPS), voltage stabilizer, battery charger, power supplies for AC/DC and DC/DC.

The application fields of UC3543DWG4 are located in many fields involve the power control, like home applications, biomedical instrument, automotive electronics, communication industry, motor control, electronic equipment, digital applications, portable devices, etc.

Working Principle

In detail, the UC3543DWG4 can implement a wide range of load and line functions, it can be used as a switch control circuit with over-current/over-voltage/under-voltage protection, programmable voltage control and current limit. This makes it suitable for both motor control and load control applications.

The UC3543DWG4 has a separate control loop that can be used to compensate for variations in the load current, supplying a constant power or current to the circuitry. The circuit contains an adjustable current-limit circuit which will respond to both the input DC bus and the output load current, providing a power limit for a given application.

The UC3543DWG4 also features a comparator and an internal voltage reference which can be used to set the operating current threshold. This can be used to provide a constant current supply, with the limiting current setting being adjustable by the user. The circuit also has a wide input range, allowing it to operate from a wide range of DC power sources.

The UC3543DWG4 is equipped with a latch-up protection to prevent it from drawing excessive current from the AC/DC power source. This feature helps to reduce power transient issues, which can cause component damage and malfunction. The circuit can also be used to provide over-voltage, over-temperature and short-circuit protection.

Apart from the functions of constant power or constant current control, the UC3543DWG4 is also well equipped with reliability-enhancing measures such as the thermal shut-down andfoldback circuitry, as well as both input and output voltage monitoring.

The UC3543DWG4 is an ideal solution for controlling power supply systems in many applications. It features tight control, wide operating range, high load current handling capacity, enhanced reliability and protection measures. This makes the UC3543DWG4 the power electronic control integrated circuit of choice in a wide range of applications.

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