LTC2900-2IDD#TRPBF

Supervisors Overview

The LTC2900-2IDD#TRPBF is a supervisory circuit manufactured by Analog Devices Inc., designed for power-on reset and watchdog timer functions. It operates within a supply voltage range of 1.6V to 5.5V, consuming a typical quiescent current of 3µA. The device features an open-drain active-low reset output with a selectable timeout period ranging from 140ms to 700ms. It includes a manual reset input and a watchdog timer that triggers a reset if the input pulse train stops. The component is housed in an 8-lead DFN package and supports operation across industrial temperature ranges.

Supervisors Feature Summary

• Integrated power-on reset generator with configurable timeout duration
• Watchdog timer functionality requiring periodic input pulses to prevent false resets
• Manual reset input capability for system initialization control
• Low quiescent current consumption suitable for battery-powered applications

Supervisors Applications

• Microprocessor and microcontroller power supervision
• Embedded systems requiring reliable reset sequencing
• Industrial control units with watchdog monitoring needs
• Portable electronic devices prioritizing low power usage

Supervisors Procurement Notes

Verify the exact suffix and tape-and-reel specifications against the manufacturer's latest datasheet before ordering. Confirm that the 8-DFN package dimensions match your PCB footprint requirements. Ensure compatibility with the target system's voltage levels and reset polarity expectations. Cross-reference the part number with official Analog Devices distribution channels to avoid counterfeit components.

Supervisors Selection Notes

Select this component when a combined power-on reset and watchdog timer solution is required in a compact package. Consider the 1.6V minimum operating voltage for compatibility with low-voltage logic families. Evaluate the fixed timeout options against system startup timing requirements. Verify that the open-drain output interface aligns with the microcontroller's reset pin configuration.

Supervisors Part Context

This part belongs to the LTC2900 series of supervisory circuits, which are designed for monitoring power supplies and managing system resets. The series offers various configurations including different timeout periods and package options. The IDD suffix indicates a specific temperature grade and packaging variant within the broader product family.

Supervisors Replacement Considerations

Direct replacements include other parts within the LTC2900 series such as the LTC2900-1 or LTC2900-3, depending on the required timeout selection. Alternative supervisory circuits from Analog Devices like the LTC2902 may be considered if additional monitoring channels are needed. Always verify pinout compatibility and electrical parameters before substitution.