LTC2938IDE#PBF

Power Supply Controllers, Monitors Overview

The LTC2938IDE#PBF is a configurable supply monitor featuring four independent voltage supervision channels and an integrated watchdog timer. Manufactured by Analog Devices Inc., this component operates within a supply voltage range of 1V to 7V and draws a maximum supply current of 80µA. It provides programmable voltage thresholds with ±1.5% accuracy over temperature, utilizing external resistive dividers for configuration. The device supports adjustable reset and watchdog timeout periods via external capacitors and offers push-pull outputs. Designed for commercial applications, it functions reliably between 0°C and +70°C and is housed in a 12-lead MSOP package.

Power Supply Controllers, Monitors Feature Summary

• Configurable multi-supply monitoring with up to four independent voltage supervision channels
• Integrated watchdog timer with adjustable timeout period using external capacitors
• High-accuracy voltage threshold detection with ±1.5% tolerance over the operating temperature range
• Programmable inputs allowing flexible system integration through external resistive networks

Power Supply Controllers, Monitors Applications

• Processor supervisor circuits requiring multiple voltage rails monitoring
• Industrial control systems needing watchdog functionality for fault recovery
• Automotive electronics requiring reliable power supervision under varying conditions
• Communication equipment ensuring stable operation through precise voltage tracking

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix 'IDE' against official Analog Devices documentation to confirm industrial temperature grading and package specifications. Ensure compatibility with existing board layouts for the 12-lead MSOP footprint. Confirm that external components for threshold setting and watchdog timing meet required precision standards. Check for any recent product change notices affecting pinout or electrical characteristics before finalizing procurement.

Power Supply Controllers, Monitors Selection Notes

Select this component when designing systems requiring simultaneous monitoring of multiple supply voltages with integrated fault recovery mechanisms. The adjustable watchdog feature simplifies design compared to discrete solutions. Consider the 80µA supply current for low-power applications. Verify that the 1V to 7V operating range aligns with the target system's logic levels. The programmable nature allows customization without changing the IC, offering flexibility across different product variants.

Power Supply Controllers, Monitors Part Context

The LTC2938 belongs to Analog Devices' family of configurable supply monitors, designed for complex embedded systems. It complements other supervisory ICs by offering multi-channel capability and watchdog integration in a compact form factor. This series addresses the need for robust power management in environments where voltage instability can lead to system failures. The IDE variant specifically targets industrial applications requiring extended temperature performance.

Power Supply Controllers, Monitors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.