S-817A48ANB-CVLT2G

The S-817A48ANB-CVLT2G is a low-voltage linear voltage regulator ideal for automotive applications, featuring a low operating current over the entire temperature range, including dropout voltage of the input, and a high ripple rejection ratio, which is critical for noise jitter reduction. In this paper, we will first present the application field for the device and then provide a comprehensive introduction to its working principle.

Application Fields

This device is used in various automotive applications that require stable supply voltages for various electronic components or circuits. It can be used for controlling the voltage of microcontroller ICs, Battery management systems, Motor control circuits, Audio systems, and other automotive systems that require a stable supply voltage. The S-817A48ANB-CVLT2G voltage regulator provides a low operating current over the entire temperature range, as well as dropout voltage of the input, and its high ripple rejection ratio helps to reduce noise jitter.

It can also be used to power automotive lights, as well as pre-sound systems, with a steady output voltage. Additionally, the device has a wide supply voltage range, which increases its flexibility, allowing it to be used in various automotive related applications.

Working Principle

The S-817A48ANB-CVLT2G is a three-terminal voltage regulator that provides a constant output voltage as long as the input voltage is higher than a certain voltage, known as the dropout voltage. The output voltage is determined by the two external resistors R1 and R2 and adjustable with a voltage divider.

In order to adjust the output voltage, a negative voltage applied to the output side will decrease the output voltage. Conversely, a positive voltage applied to the output side will increase the output voltage. The current flow in the regulator is kept constant by the Error Amplifier, which compares the output voltage with a reference voltage. If the output voltage is higher than the reference voltage, then the error amplifier sends a signal to decrease the voltage by reducing the current flow.

The S-817A48ANB-CVLT2G also features high ripple rejection, which reduces noise jitter, making it well-suited for automotive applications. The device also comes with short-circuit protection and over-temperature protection, which protect the device from external damage. Additionally, the device is designed to be used in extreme temperatures and under varying load conditions.

Conclusion

In conclusion, the S-817A48ANB-CVLT2G is an ideal choice for automotive-related applications that require a steady output voltage. The device can be used to generate supply voltages for various automotive components, such as microcontrollers and pre-sound systems. Additionally, it features a low dropout voltage, wide supply voltage range, and high ripple rejection, which helps reduce noise jitter. The device also provides over-temperature and short-circuit protections, making it well-suited for use in various automotive-related applications.