TPS3897ADRYR

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PMIC - Supervisors

Power management integrated circuit (PMIC) supervisors are an essential component of battery-operated devices in a variety of industrial, medical, and consumer applications. The TPS3897ADRYR from Texas Instruments is a power supervisor designed to help stabilize voltage output in order to safely and efficiently protect batteries and other components from damage due to voltage spikes or other power anomalies.

Application Field

The TPS3897ADRYR can be used on a wide range of systems and applications, including portable medical and industrial equipment, battery-operated electronics, and consumer electronics. It is a versatile device that can help protect power sources and associated components by providing protection against voltage spikes and power-related faults. Its features include an operating voltage range of 2.5–5.5 V, thermal shutdown and crowbar protection, adjustable reset timeout, and a precision 10 mV reference. Furthermore, it can monitor the positive and negative supply voltages separately and has up to five independent voltage monitoring pins.

Working Principle

The TPS3897ADRYR is a voltage supervisor that monitors the power supply and looks for any significant voltage variations. When a voltage variation is detected, it generates an active-low reset signal to reset the system. The reset signal is active as long as the monitored voltage remains outside the predetermined window of valid operation. This is referred to as the preset voltage window. Once the monitored voltage returns to an acceptable level, the reset signal is deactivated, and the system becomes operational again.

The TPS3897ADRYR also offers temperature protection, overvoltage protection, and short-circuit protection, depending on the configuration. The temperature protection prevents the system from reaching very high temperatures that can damage components, while the overvoltage protection shuts down the system when it detects a voltage that is too high. The short-circuit protection helps to protect the system from damage due to a short circuit.

Conclusion

The TPS3897ADRYR is a powerful and reliable power management supervisor IC designed for a variety of voltage-sensitive applications. Its wide operating voltage range, adjustable reset timeouts, and precision 10 mV reference make it an attractive choice for battery-operated systems. Along with its reset signal, it also offers temperature, overvoltage, and short-circuit protection to ensure safe and efficient operation.

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