DS1233A-10/T&R

PMIC (Power Management Integrated Circuit) supervisors are integrated circuits designed to protect powered systems against catastrophic malfunctions. They are the primary source of protection in many scenarios, from processor-based to specialty and embedded systems. The DS1233A-10/T&R is a supervisor IC from Maxim Integrated Products that offers both system reset and dedicated supervisor functions for monitoring device steady-state performance. This article outlines the application field and working principle of the device.

Application Field

The DS1233A-10/T&R is designed for use in low-voltage/low-power applications that require system reset and extended supervisor functions. The device is commonly used in consumer electronics, medical instrumentation, telecom/telephony, networking and industrial equipment. The device’s extended feature set reduces the need for additional external circuitry, allowing it to be used in space-constrained applications. In addition, the device can be configured to fit the specific requirements of an application, providing flexibility and scalability.

Working Principle and Features

The device works by constantly measuring and monitoring system voltage levels and activating an internal reset signal when levels are outside the established specifications. This serves to protect the system from malfunctioning components or environment-induced disruptions. The supervisor module also provides various configuration options to tune the device’s operations. This includes the ability to adjust the trip points and reset duration, as well as the ability to trigger a reset based on the presence of signals such as a bus pause or loss of clock signal.

The DS1233A-10/T&R also offers extended features that can be used to further enhance system reliability. These include a watchdog input to detect system hangs or insufficient activity, as well as an external reset input to manually force a system reset. It also provides hardware clock lockout, an enable input to power cycle the reset line, and a power-on reset (POR) circuit for system initialization.

The device is also capable of generating a manual reset signal when required. This can be done by asserting the reset input by a certain amount of time, or asserting a flag from the system that indicates that a reset is needed. The reset flag will be cleared once the device has detected that the reset had been successful.

Conclusion

The DS1233A-10/T&R supervisor IC from Maxim Integrated Products is a reliable device designed to protect powered systems against catastrophic malfunctions. It offers a wide range of configuration options and extended features, making it suitable for various applications in consumer electronics, industrial equipment, medical instrumentation and more. It provides system reset protection, as well as dedicated supervisor functions to ensure steady-state system performance.