UC3524ADWTRG4

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The UC3524ADWTRG4 is a monolithic IC designed for use as a low power, adjustable frequency DC to DC converter, included in the PMIC - Voltage Regulators - DC DC Switching Controllers category. The circuit conducts and then turns off the current through an inductor when the output voltage is greater than the input voltage, thus acting like a current limiter. This circuit also includes a adjustable current limit and on-off control with a current limit feedback.

The UC3524ADWTRG4\'s application field is mostly in battery-dependent systems such as back-up power supplies and machines, where low power consumption and high efficiency are of critical importance, thanks to its advanced switching technique, implemented with a comparable low quiescent. It can also be used as a voltage regulator in automotive/ industrial applications, as it provides a power supply and offers a reliable, cost-efficient and low-power solution.

The UC3524ADWTRG4 features an on-chip oscillator, with adjustable switching frequency up to 500kHz, and an adjustable current limit up to 2A. The UC3524ADWTRG4 also includes a step up/down operational mode, a good load regulation and very low output noise. It works with supply voltages from 4V to 38V and it includes a precision reference and current limiter, over current protection and thermal shutdown.

The UC3524ADWTRG4 has been designed to act as a versatile step up/down DC to DC converter, providing users with adjustable output voltages and current limiting functions. The circuit works by adjusting the pulse width of the input signal, across an external switch. This switch is connected to an inductor, which in turn is connected to an input capacitance and an output capacitance. When the switch is closed, the current flowing through the inductor builds up. When the switch is opened, the current flowing through the inductor falls back to zero and the energy stored in the inductor is transferred to the input and output capacitances.

The UC3524ADWTRG4 current limit and on-off control is implemented with a current limit signal bucked from the output voltage to generate the control signal. The current limit signal is used to sense the voltage at the output and to adjust the pulse width of the input signal in such a way that the output voltage remains within a specified range. The current-limiting function is also used to provide a reset signal to the on-off control circuit, whenever an over current situation occurs.

The UC3524ADWTRG4 is an improved version of the UC3524 which includes the addition of a high-frequency output stage. This output stage helps reduce the inductance of the power stage, resulting in smoother switching and improved efficiency over a greater range of input voltages. Additionally, this high-frequency output stage helps to reduce the overall power dissipation, allowing the UC3524ADWTRG4 to operate in a more efficient manner.

In summary, the UC3524ADWTRG4 is a highly efficient DC to DC converter with adjustable switching frequency and adjustable current limit, both provide control over the power conversion process with minimal losses. Its versatile design allows it to be used in a variety of different applications, such as battery-dependent systems, automotive/industrial applications, as well as a reliable, cost-efficient and low-power voltage regulator. This improved version of the UC3524 also boasts a high-frequency output stage, allowing less power to be dissipated while improving the efficiency of the power conversion process.

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