S-8521B33MC-ATST2U

The S-8521B33MC-ATST2U is a DC-DC switching controller that belongs to the class of DC-DC voltage regulators and provides the best solution for a wide range of applications. It has a wide array of features such as included frequency synchronization, overvoltage protection, and supports capacitor and inductive load applications.

Features

• High precision current limit (162mA)
• Wide range of input voltage (4.8V to 32V)
• Low standby current (<1mA)
• Voltage monitor with overvoltage protection (OVP)
• Integrated frequency synchronization
• Operating temperature range from -40°C to +85°C
• Thermal shutdown for protection
• Current-mode control
• Soft start

Application Field

The S-8521B33MC-ATST2U DC-DC switching regulator is suitable for use in a wide range of applications where robustness, high efficiency, and reliability are needed, such as automotive applications, home appliances, industrial, and computer systems. It can be used in DC input and AC input systems and can accept capacitive or inductive loads. It is also an ideal choice for simple non-isolated point-of-load (POL) applications.

Working Principle

The S-8521B33MC-ATST2U uses a current-mode control technique to generate a constant voltage output from a wide range of input supply voltages. This mode of operation involves measuring the output current and comparing it to the reference voltage to determine the output voltage. This voltage is then used to control the duty cycle of the switching element, thereby maintaining a stable voltage output.

To ensure quality performance, the S-8521B33MC-ATST2U also includes features such as frequency synchronization that allows the device to run in synchronous mode, overvoltage protection (OVP), and thermal shutdown. Furthermore, the device has a low standby current and is programmed for a wide input voltage range, making it the ideal choice for point-of-load applications.

Conclusion

The S-8521B33MC-ATST2U DC-DC switching controller is an ideal choice for a wide range of applications, from automotive to home appliances. It offers high efficiency, robustness, and a wide range of features such as overvoltage protection, thermal shutdown, and frequency synchronization.