LTC695CSW-3.3#PBF

Supervisors Overview

The LTC695CSW-3.3#PBF is a microprocessor supervisory circuit manufactured by Analog Devices Inc., designed to monitor power supply voltages for system reliability. It operates within a supply voltage range of 2.0V to 5.5V and provides a precise reset threshold of 3.08V, ensuring accurate detection of out-of-tolerance conditions. The device features an open-drain or open-collector active-low reset output with a typical timeout duration of 140ms. It functions reliably across an industrial temperature range from -40°C to +85°C and consumes a maximum quiescent current of 600µA. Packaged in a 16-pin SOIC (Wide) format, it supports single-supply operation without external components.

Supervisors Feature Summary

• Provides complete power supply monitoring and battery control functions including microprocessor reset and watchdog timing
• Features a precise internal voltage reference and comparator circuit for accurate threshold detection
• Delivers an active-low reset signal with configurable timeout durations for stable system recovery

Supervisors Applications

• Microprocessor reset circuits requiring precise voltage supervision
• Battery backup systems with write protection capabilities
• CMOS RAM protection against power failure events
• Power failure warning systems in embedded controllers

Supervisors Procurement Notes

Verify the specific suffix and package variant against the official datasheet to ensure compatibility with design requirements. Confirm RoHS compliance status and manufacturing origin through authorized channels. Check for any product change notifications or lifecycle updates that may affect long-term availability. Ensure the supplier provides valid traceability documentation for quality assurance purposes.

Supervisors Selection Notes

Select this component when a dedicated supervisory circuit with integrated voltage reference and comparator is required. It is suitable for designs needing a fixed reset threshold without external resistor dividers. Consider the operating temperature range and quiescent current consumption relative to system power constraints. Verify that the open-drain output interface matches the logic levels of the connected microprocessor or controller.

Supervisors Part Context

This part belongs to the LTC690 family of microprocessor supervisory circuits, which includes variants like the LTC690, LTC691, LTC694, and LTC695. These devices share common functionalities such as power supply monitoring, battery backup control, and watchdog timing. The family is designed to provide comprehensive protection for digital systems against power-related faults using minimal external components.

Supervisors Replacement Considerations

Compatible substitutes include other parts from the LTC690 family with matching voltage thresholds and package types. Verify pinout compatibility and electrical specifications before substitution. Ensure the alternative device meets the same temperature range and output drive requirements.