LTC2919HDDB-3.3#TRMPBF

Supervisors Overview

The LTC2919HDDB-3.3#TRMPBF is a precision triple/dual input voltage monitor manufactured by Analog Devices Inc. It features an industrial temperature range of -40°C to +85°C and operates within a supply voltage range of 1.7V to 5.5V. The device provides three monitored channels with fixed thresholds, including a 3.3V reference for one channel, while others are adjustable via external resistors. It utilizes a 10-WFDFN package with exposed pad for surface mount installation.

Supervisors Feature Summary

• Provides simultaneous monitoring of up to three independent voltage rails
• Generates active-low reset signal upon detection of under-voltage or over-voltage conditions
• Includes programmable reset timeout delay to prevent false triggering during power transitions

Supervisors Applications

• Industrial control systems requiring multi-rail power supervision
• Telecommunications infrastructure equipment
• Automotive electronic control units (ECUs)

Supervisors Procurement Notes

Verify the specific suffix 'HDDB' indicates the industrial temperature grade (-40°C to +85°C) and '3.3' denotes the fixed threshold configuration. Confirm the '#TRMPBF' suffix corresponds to tape-and-reel packaging with lead-free composition. Cross-reference the manufacturer's latest datasheet revision to ensure compatibility with current RoHS directives and material declarations before finalizing procurement orders.

Supervisors Selection Notes

Select this component when precise supervision of multiple voltage domains is required in space-constrained designs. The DFN package offers a small footprint suitable for dense PCB layouts. Ensure the monitored voltages fall within the specified operating range and that the reset threshold accuracy meets the system's fault detection requirements without external calibration.

Supervisors Part Context

This part belongs to the LTC2919 family of high-precision voltage supervisors. It shares functional similarities with the LTC2909 but offers enhanced accuracy and additional monitoring capabilities. The HDDB variant specifically targets industrial applications demanding wider temperature stability compared to commercial grade alternatives.

Supervisors Replacement Considerations

Direct pin-compatible substitutes include other members of the LTC2919 series such as LTC2919IDDB-3.3#TRMPBF for extended temperature ranges. Verify electrical parameters and package dimensions match before substitution.