L4971

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L4971 is a high-performance DC/DC adjustable converter switch regulator controller manufactured by STMicroelectronics. It is designed to offer high efficiency, regulated output and protection against short circuits and output over-Current/Voltage. The L4971 is suitable for a wide range of input and output voltages and currents. It has an adjustable output voltage up to 45V and an adjustable output current limit up to 6A (depending on the application).

The L4971 is a DC to DC switching regulator controller. It utilizes an internal high-voltage oscillator to drive an external power MOSFET switch to convert DC sources. Depending on the input voltage and output requirements, the L4971 can be used as either a buck (step-down) converter or a boost (step-up) converter. The L4971 has adjustable operating frequency and can handle input voltages from 6V to 45V and output voltages from 0.59v to 42V. It also offers adjustable output current limit settings that can be set according to the application.

The L4971 has a wide range of applications. It is used in battery-operated consumer electronics, digital photography, automotive electronics, and networking applications. Additionally, it can also be used in solar panel based applications to regulate the solar panel output voltage and current for charging batteries or for powering other circuits. Furthermore, the L4971 can be used for motor speed control and motion control applications.

The working principle of the L4971 is simple and based on switching converter topology. The L4971 operates by controlling the switching of an external MOSFET power switch to regulate the output voltage. It is based on a pulse width modulation (PWM) technique. The L4971 generates a high-voltage oscillator signal which is used to switch the MOSFET. Depending on the input voltage, the L4971 can be used as a buck or boost switching converter. It regulates the output voltage by varying the pulse width of the oscillator signal.

The L4971 incorporates a variety of built-in protection features to safeguard the device and its application. These include short circuit protection, output over-voltage protection, adjustable switching frequency, and adjustable output current limit. It also has an integrated temperature monitor which helps to protect the device against overheating.

In conclusion, the L4971 is a versatile and high-performance DC/DC adjustable converter switch regulator controller manufactured by STMicroelectronics. Its wide range of applications include charging batteries, powering electronics, motor speed control and motion control. The L4971 utilizes a high-voltage oscillator to drive an external MOSFET power switch for converting DC sources. It also features a number of protection features to protect the device and its application.

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