L4949DR2G

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The L4949DR2G is a linear voltage regulator from STMicroelectronics. It is part of the STMicroelectronics\' L4949 Power Management Series which includes products such as the L4949D, L4949BL, L4949CL, and L4949AP. The purpose of the L4949DR2G is to provide a regulated output voltage for the system, regardless of input voltage and load conditions. The device includes a wide range of features, including adjustable current limiting, over-temperature protection, input voltage range protection, and reverse current protection. It is ideal for applications such as controlling voltage in lighting and audio equipment, providing protection against over-voltages, and as a motor or fan control.

The L4949DR2G is designed to provide a regulated output voltage of 2V and features a high-precision output voltage reference of 1.0V. The device is capable of handling currents up to 1.0A and features an adjustable current limit range of 1mA to 10mA. The device also includes thermal protection and is capable of handling up to 65°C ambient temperature. The device also includes a low dropout voltage of around 0.9V, allowing it to operate with a wide range of input voltages. In addition, the device is able to withstand voltages up to 40V and reverse current protection of up to 8mA. The L4949DR2G is a surface mount device with a size of 7mm x 7mm.

The working principle of the L4949DR2G is fairly straightforward. The device includes an input voltage, which is supplied by the input power source. This input voltage is then regulated by the L4949DR2G to provide a regulated output voltage, based on the voltage reference. The output voltage is then passed to the load. The device is able to maintain a regulated output voltage regardless of input voltage, temperature or load conditions. The device also features a current limit, which protects the device from over-current conditions. The device also features a thermal protection circuit, which protects the device in the case of over-temperature conditions.

The L4949DR2G is an ideal device for applications such as lighting, audio, motor and fan control, as well as protection from over-voltages. The device is extremely reliable and includes a wide range of features such as adjustable current limiting, over-temperature protection, input voltage range protection, and reverse current protection. The device is also compact and easy to use, making it an ideal choice for a variety of applications.

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