CAT1025YI-25-GT3

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Simple Reset/Power-On Reset
Number of Voltages Monitored:	1
Output:	Open Drain or Open Collector
Reset:	Active High/Active Low
Reset Timeout:	130 ms Minimum
Voltage - Threshold:	2.55V
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	8-TSSOP (0.173", 4.40mm Width)
Supplier Device Package:	8-TSSOP
Base Part Number:	CAT1025

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PMIC - Supervisors: CAT1025YI-25-GT3 Application Field and Working Principle

Power management integrated circuits (PMICs) are an integral component in many electronic circuits. PMICs such as the CAT1025YI-25-GT3 are designed to provide system management, power monitoring, and power protection functions. This particular device is a system supervisor IC, providing overvoltage and low-voltage protection as well as system reset functionality.The CAT1025YI-25-GT3 is a monolithic IC designed for use in a wide variety of system management applications, all of which require a guarantee of reliable system operation in the face of power supply or user-induced faults. The device is designed with a wide input voltage range, and can operate from 2.7V to 5.5V. It is guaranteed to work over the full -40°C to 85°C temperature range in multiple market segments, from desktop computers to industrial and medical equipment.The CAT1025YI-25-GT3 system supervisor contains several functions, all of which are used to protect the system in the case of an unexpected condition such as an over- or under-voltage spike. These functions include overvoltage protection, undervoltage protection, power-on reset, reset control, and fault timeout. To begin with, the overvoltage protection feature keeps the system from operating in situations where the voltage is too high. This feature works by monitoring the input voltage, comparing it to the user-set voltage level, and if it exceeds this level, the device will assert a reset output.Similarly, the undervoltage protection feature works by monitoring the input voltage and asserting an output reset signal if the input voltage drops below a user-set level. This feature is essential in systems that may be exposed to instability in the power supply - or due to user input.The reset control feature of the CAT1025YI-25-GT3 system supervisor ensures that the reset output is asserted at the proper time and interval. This allows for the proper operation of the system, which could otherwise be delayed due to a slow-response reset.Finally, the fault timeout feature of the CAT1025YI-25-GT3 system supervisor limits the length of time a fault is allowed to persist before the system must reset. This feature is especially useful in systems with large power swings, such as those found in motor control systems and other industrial applications. When the fault timeout threshold is exceeded, the system will reset.In summary, the CAT1025YI-25-GT3 system supervisor is an integral component in many system management applications. It is designed with a wide input voltage range and is guaranteed to work over the full -40°C to 85°C temperature range. The device contains several safety features that work together to protect the system in the case of an unexpected condition such as an over- or under-voltage spike, and ensures that the system is properly reset in a timely manner.

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