Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Type:	Simple Reset/Power-On Reset
Number of Voltages Monitored:	1
Output:	Push-Pull, Totem Pole
Reset:	Active Low
Reset Timeout:	140 ms Minimum
Voltage - Threshold:	3.08V
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	TO-236-3, SC-59, SOT-23-3
Supplier Device Package:	SOT-23-3
Base Part Number:	CAT859

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PMIC - Supervisors: CAT859TTBI-GT3 Application Field and Working Principle

PMIC, or power management ICs, are designed to regulate the flow of electrical power to the many circuits, components and devices found in a variety of systems. The goal of these power management ICs is ultimately to ensure that energy is efficiently and effectively converted from one form to another.Power management ICs, also known as supervisory ICs, are generally used in two main application fields: one to enhance system reliability and the other to protect against loss of power. CAT859TTBI-GT3 is currently one of the most widely used supervisor ICs around the world. The device is often chosen to power, protect and supervise an extensive array of digital circuit applications and devices. So, let’s dive into the main features of CAT859TTBI-GT3 and find out what makes it apart from other supervisor ICs.

Features

CAT859TTBI-GT3 is specially designed to monitor a wide input voltage range from 2.4V up to 15V. The device also boasts of an integrated Zener-Diode for input under-voltage cut-off. Moreover, it provides adjustable trip-points for an output on/off switching, thereby improving system flexibility in many applications. The other key features that make CAT859TTBI-GT3 stand out from the rest include its higher band-gap accuracy, lower power consumption, fast on/off switching, low quiescent current, improved hysteresis characteristics, and more.

Working Principle

The working principle of CAT859TTBI-GT3 is conceptually simple and straightforward. The device monitors the input voltage and switches the output voltage to either high or low, depending on the status of the input voltage. When the input voltage falls below the preset threshold, the device will switch the output voltage to a low logic level. On the other hand, when the input voltage rises above the preset threshold level, the device will switch the output voltage to a high logic level. The same concept applies to voltage monitoring, reset assertion, and trip-point detection. In addition to that, the device features temperature-compensated threshold voltage for further improved accuracy and hysteresis of the device’s trip-point detection without having to trim the device externally.

Applications

CAT859TTBI-GT3 can be used in a wide range of situations, from embedded applications to automotive systems. In embedded applications, the device can be used as a reset supervisor to ensure proper power/reset sequencing in small form-factor systems. In automotive applications, the device can be used for working on load-off monitoring and motor voltage protection. Other applications for the device include battery backed-up systems, data memory back-up, low-power systems, embedded systems in general, etc.

Benefits

The main benefits of using the CAT859TTBI-GT3 can be summarized as below: • Wide input voltage range – The device’s input voltage range allows it to be used efficiently in a wide variety of applications.• Low power consumption – The integrated Zener-Diode also provides lower power consumption is comparison to other supervisor ICs, thereby making it suitable for battery back-up systems.• Fast on/off switching – Thanks to its precise switching levels and hysteresis characteristics, CAT859TTBI-GT3 can fast switch the output voltage to either high or low for maximum output control in many applications.• Comprehensive monitoring – The device’s comprehensive input voltage, temperature-compensated threshold and hysteresis characteristics makes it ideal for use in battery backed-up systems, motor voltage protection, and load-off monitoring, among others.

Conclusion

CAT859TTBI-GT3 is a power management IC designed for use in a variety of applications, ranging from embedded systems to automotive systems. With its wide input voltage range, lower power consumption, precise switching levels and hysteresis characteristics, it is undoubtedly one of the best supervisor ICs in the market right now.

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