LTC2960HTS8-3

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Power management integrated circuit (PMIC) is an integrated circuit that aims to reduce the system power consumption and ensure reliable power supply for the microelectronic circuits. PMIC supervision is an important part of it. Supervisors are designed for low power system to monitor and protect power supply and reset microprocessors, which usually detect and sense the power source and produce various signals for reset and power supply control. The LTC2960HTS8-3, integrated into the PMIC Supervisors, is a device designed with triple supply voltage monitor and controller. Its high accuracy and power supply protection functions provide powerful support to the safety and stability of microelectronic circuits.

Features and Specifications of LTC2960HTS8-3

The main features and specifications of the LTC2960HTS8-3 include:

• Supply voltage range: 2.5V to 5.5V.
• Integrated programmable hot swap controller.
• On-board voltage detection and measurement of up to three power supplies.
• Configurable comparator trip points and hysteresis values.
• Over-voltage protection up to 6.5V.
• Low power of 6nA.
• Reset output and interrupt output.
• Compact 10-lead MSOP/TO-225 housing.
• +/-0.2% voltage detection accuracy.

Application Field

The LTC2960HTS8-3 is especially suitable for the following applications:

• Microprocessor reset and power management.
• Programmable input power voltage monitoring and control.
• Power supply reset in medical, automation and industrial microelectronic applications.
• Hot swap monitoring and protection in data center and server applications.

In addition, this device can also be used in distributed current/voltage monitoring and system safety control as well as any high-precision needed in power supply measurement and control.

Working Principle

The LTC2960HTS8-3 consists of two parts: the voltage monitor and the comparator. The voltage monitor measures the input voltage coming from the power supply, which can be configured for two, three, or four external reference voltages using the pins VREF1, VREF2, VREF3, and VREF4. The voltage monitor also has an internal reference voltage generated from a band-gap reference configured internally at 2.5V. The comparator consists of a pair of comparators, with each one having an adjustable trip point, VCT, and a hysteresis, VTH.The comparator indicates whether the input voltage (VIN) is within the range of VCT, (VIN > VCT + VTH) or VCT (VIN < VCT − VTH).The output signal of the comparator is then used to control the safety shutdown signal and reset signal.

The LTC2960HTS8-3 also provides an additional reset feature, which is a unique feature to this device that supports an independent RESET# pin for system reset.The voltage measure input has one range that supports up to 6.5V on the VIN pin. This range is used to detect overvoltage conditions of up to 6.5V and the device will shut down when the voltage exceeds the preset voltage levels. The device offers an adjustable power-up delay time that both monitors and programs the startup sequence of the power supply.

The LTC2960HTS8-3 is designed for easy operation and has various features that enhance the protection of the microelectronic circuits. The voltage monitor and the comparator, connected in cascade, provide the necessary power supply protection. The dual-channel comparator provides reliable over-voltage detection and shut down protection. The integrated hot swap controller with adjustable delay time allows proper startup sequences of the power supplies while preventing any current overloads. The integrated reset signal of the device can be used for resetting the microelectronic circuits, thus preventing any system failures.

Conclusion

The LTC2960HTS8-3 is a triple supply voltage monitor and controller, integrated into the PMIC Supervisors, which is mainly used for microprocessor reset and power management, programmable input power voltage monitoring and control, as well as hot swap monitoring and protection. It has a wide range of features and configurations which provide reliable power supply protection and reset signals to microelectronics circuits. In conclusion, the LTC2960HTS8-3 is a robust device, which is widely applicable and provides users with the highest level of safety and reliability.

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