LTC2938HDE#PBF

Power Supply Controllers, Monitors Overview

The LTC2938HDE#PBF is a configurable supply monitor designed for systems requiring watchdog supervision. It features four monitored inputs with programmable voltage thresholds and an adjustable watchdog timer. The device operates within a supply voltage range of 1 V to 7 V and supports push-pull outputs. Packaged in a 12-lead DFN EP, it functions across temperatures from -40°C to +125°C with a maximum quiescent current of 80 µA.

Power Supply Controllers, Monitors Feature Summary

• Configurable monitoring for up to four supply voltages using external resistive dividers
• Integrated watchdog timer with timeout periods adjustable via external capacitors
• High accuracy preset voltage thresholds maintained over the operating temperature range
• Adjustable reset and watchdog timeout durations controlled by external components

Power Supply Controllers, Monitors Applications

• Processor supervisor circuits in embedded systems
• Multi-rail power management monitoring
• Automotive electronic control units
• Industrial equipment with watchdog requirements

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm package type and temperature grade. Confirm availability status as distribution channels may list limited stock or end-of-life conditions. Ensure the selected variant matches the required input count and output configuration for the target application design.

Power Supply Controllers, Monitors Selection Notes

Select this component when designing systems that require simultaneous monitoring of multiple voltage rails with integrated fault protection. The adjustable nature of the thresholds and timeouts allows customization without changing part numbers. Consider the DFN EP package for thermal performance and space-constrained layouts requiring surface mount installation.

Power Supply Controllers, Monitors Part Context

This part belongs to the LTC2938/LTC2939 family of configurable supply monitors. The HDE suffix indicates a specific industrial temperature grade and DFN EP package configuration. It serves as a specialized solution for applications needing precise voltage supervision and system integrity checks through watchdog functionality.

Power Supply Controllers, Monitors Replacement Considerations

LTC2938CMS#PBF offers similar functionality in an MSOP-12 package with commercial temperature ratings. LTC2938HMS#TRPBF provides the same core features in a tube-packaged MSOP variant. Verify pin compatibility and threshold configurations before substituting.