TPS3705-33D

The TPS3705-33D is a Power Management Integrated Circuit (PMIC) - Supervisors. It provides overcurrent and overtemperature protection, voltage monitoring, fault reporting, and system reset for industrial and medical systems.

The TPS3705-33D features an adjustable overvoltage (OV) and undervoltage (UV) limit, plus an adjustable maximum allowable current (OVP) limit.

The OV, UV and OVP settings are independently adjustable by external resistor and voltage dividers. You can use it to detect the presence of a supply input and the output of a switch-mode power supply. The resistor and voltage dividers enable the supervisor to sense incremental changes in the voltage and current of the power supply and to report a fault condition when any of the thresholds are exceeded.

The TPS3705-33D offers a low-cost, highly integrated solution for system power management. It allows you to easily monitor and control power supply conditions, detect and isolate critical faults, and provide a reset response to the microprocessor upon system recovery.

The working principle behind the TPS3705-33D is simple. Internal analog circuits monitor the voltage and current levels of the power supplies, and detect any out-of-limit conditions. When an out-of-limit condition is detected, an internal fault flag is set, causing an active-low fault signal to go high. This fault signal can then be used to trigger a microprocessor reset that will bring the system back to a safe operating state.

The TPS3705-33D provides a wide operating temperature range, complete protection against current overloads, and an adjustable current sense. All these features make it ideal for applications in factory automation, medical systems, and other industrial environments.

In summary, the TPS3705-33D is a low-cost, highly integrated PMIC-Supervisors package that is ideal for the monitoring and protection of supply rails in industrial environments. It provides overcurrent and overtemperature protection, voltage monitoring, fault reporting, and system reset, making it a great choice for applications that demand reliability and safety.