S-817B42AY-B-G

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S-817B42AY-B-G Application Field and Working Principle

S-817B42AY-B-G, belonging to PMIC (Power Management IC) and classified as Linear Voltage Regulator, is a high precision and low temperature drift voltage regulator which is widely used in various high-end electronic equipment. It adopts an adjustable current source for its high accuracy calibration, with superior thermal performance, ultra low temperature drift and high precision.

The S-817B42AY-B-G consists of an adjustable current source (ACS), a low-drift precision voltage reference, a band-gap reference and a transconductance amplifier (TGA). The ACS is connected to the low-drift voltage reference and a band-gap reference. The voltage between them is determined by the setting of the current source. The output of the band-gap reference is then filtered by the TGA and converted into a linear output.With the parameters of the ACS and the TGA correct, the output voltage of the S-817B42AY-B-G can be easily adjusted. The output characteristics of the S-817B42AY-B-G can be further enhanced by using a programmable feedback loop.

The primary application of S-817B42AY-B-G is to provide a constant, stable and accurate output voltage in the areas of DC-DC power conversion, LED lighting systems, battery-backed power supplies, AC-DC power supplies and power supplies for automotive systems. The wide range of supply voltage (3.3V to 20V), combined with high accuracy and very low temperature drift make it an ideal choice for many applications in these areas.

S-817B42AY-B-G can also be used in a variety of other applications. It can be used as a voltage regulator for electronic devices such as computers and communication systems, as well as for regulating the charge of batteries and providing precision power for high-accuracy systems. It can also be used in motor controller applications to provide precise drive current for motors, as well as in monitoring and measuring devices to ensure accuracy.

The working principle of S-817B42AY-B-G is fairly simple. First, its adjustable current source sets the output voltage to a desired level. This voltage is then fed back to the high-accuracy voltage reference and compared with the band-gap reference. The difference in these two voltages is then filtered by the transconductance amplifier and converted into a linear output voltage. The output voltage is then regulated by the feedback loop until it meets the desired level.

The output voltage of S-817B42AY-B-G is accurate and stable over a wide range of operating conditions. With its built-in protection features and low temperature drift, it is especially suitable for both stationary and portable applications. Moreover, the adjustable current source allows for easy adjustment and customization of its output characteristics. All these features make S-817B42AY-B-G an ideal choice for many applications.

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