LT1790BIS6-3.3#TRMPBF

Voltage Reference Overview

The LT1790BIS6-3.3#TRMPBF is a micropower low dropout series voltage reference from Analog Devices, housed in a 6-lead plastic TSOT-23 package. It provides a fixed output voltage of 3.3V with B-grade initial accuracy of ±0.1% and a maximum temperature coefficient of 25ppm/°C. The device operates within an industrial temperature range of –40°C to 85°C and supports a wide supply input range up to 18V. It features low supply current of 60µA maximum, ensuring minimal power dissipation suitable for battery-operated systems.

Voltage Reference Feature Summary

• Curvature compensation and trimmed thin-film resistors ensure high output accuracy and low drift.
• Capable of sourcing and sinking current, allowing operation as a micropower negative voltage reference.
• Post-package trimming reduces temperature coefficient and enhances output precision.
• Minimized thermally induced hysteresis maintains stability across temperature cycles.

Voltage Reference Applications

• Handheld Instruments
• Negative Voltage References
• Industrial Control Systems
• Data Acquisition Systems
• Battery-Operated Equipment

Voltage Reference Procurement Notes

Verify the specific ordering suffix #TRMPBF indicates tape and reel packaging with limited factory quantities. Confirm the B-grade designation matches the required ±0.1% accuracy and 25ppm/°C drift specifications. Ensure the industrial temperature range (–40°C to 85°C) aligns with system environmental requirements. Check for lead-free finish compliance if mandated by project standards.

Voltage Reference Selection Notes

Select this component when low quiescent current and compact SOT-23 footprint are critical. The B-grade offers a balance between cost and precision for general industrial applications. Consider the A-grade variant if tighter ±0.05% accuracy and 10ppm/°C drift are necessary. Evaluate the minimum operating voltage differential relative to the source rail to ensure stable regulation under load conditions.

Voltage Reference Part Context

This part belongs to the LT1790 family of micropower references designed for battery-powered applications. It replaces older Linear Technology parts with improved thermal performance and lower noise characteristics. The TSOT-23 package allows for space-constrained designs while maintaining robust electrical performance comparable to larger packages.

Voltage Reference Replacement Considerations

LT1790BIS6-3.3#TRPBF