LTC2939HMS#PBF

Power Supply Controllers, Monitors Overview

The LTC2939HMS#PBF is a configurable supply monitor designed for systems requiring supervision of up to six distinct voltage rails. Manufactured by Analog Devices Inc., this integrated circuit operates within a supply voltage range of 1V to 6V and supports an extended industrial temperature range from -40°C to +85°C. It features a watchdog timer with adjustable timeout periods and includes manual reset functionality. The device utilizes external resistive dividers for threshold configuration, offering high accuracy across varying thermal conditions.

Power Supply Controllers, Monitors Feature Summary

• Configurable monitoring for up to six independent supply voltages using external resistor networks
• Integrated watchdog timer with externally adjustable timeout duration via capacitors
• High-precision voltage thresholds accurate to ±1.5% over the full operating temperature range
• Supports manual reset input for system recovery and control

Power Supply Controllers, Monitors Applications

• Industrial control systems requiring multi-rail power supervision
• Telecommunications infrastructure equipment
• Automotive electronic modules
• Embedded computing platforms with complex power sequencing

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm package type and temperature grade. Ensure compatibility with existing PCB footprints for the MSOP-12 package. Confirm that external component values meet the datasheet requirements for desired thresholds and watchdog delays before finalizing procurement.

Power Supply Controllers, Monitors Selection Notes

Select this component when supervising multiple voltage rails in a compact surface-mount form factor. Consider the ±1.5% threshold accuracy for precision applications. Evaluate the need for external programming resistors and capacitors against board space constraints. Compare against the LTC2938 if only four channels are required.

Power Supply Controllers, Monitors Part Context

This part belongs to the LTC2938/LTC2939 family of configurable supply monitors. These devices are engineered for robust system protection in environments where power integrity is critical. The family shares common architectural features but differs in channel count and pinout configurations to suit various design densities.

Power Supply Controllers, Monitors Replacement Considerations

LTC2938HMS#PBF serves as a functional substitute for designs utilizing only four monitored supplies. Verify pin compatibility and ensure the reduced channel count meets application requirements without compromising system safety.