LT1790BCS6-3#TRMPBF

Voltage Reference Overview

The LT1790BCS6-3#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 3V output with an initial accuracy of ±0.1% and a maximum temperature coefficient of 25ppm/°C. The device operates within a supply voltage range of 3.5V to 18V and draws a maximum no-load supply current of 80µA. Designed for commercial applications, it functions reliably between 0°C and 70°C.

Voltage Reference Feature Summary

• Curvature compensation and post-package trimming ensure high output accuracy and low drift.
• Capable of sourcing and sinking current for versatile positive or negative reference configurations.
• Low thermal hysteresis minimizes output shifts caused by package stress during temperature cycling.

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify the specific suffix #TRMPBF indicates tape and reel packaging containing 500 units. Confirm the 'B' grade designation matches the required 0.1% accuracy and 25ppm/°C drift specifications. Ensure the commercial temperature range (0°C to 70°C) aligns with system requirements rather than the wider industrial options available in the family.

Voltage Reference Selection Notes

Select this component when a fixed 3V precision reference is needed in a compact SOT-23 form factor. The B-grade specification offers a balance of cost and performance for general-purpose applications. Consider the 80µA supply current for battery life calculations and verify that the 3.5V minimum input voltage accommodates the lowest expected source voltage under load conditions.

Voltage Reference Part Context

This part belongs to the LT1790 family of micropower references, which combines high accuracy with small package size. The family utilizes trimmed precision thin-film resistors and curvature compensation. The LT1790BCS6-3 variant specifically targets the 3V output level with B-grade tolerances, distinguishing it from A-grade counterparts and other voltage options like 2.5V or 5V.

Voltage Reference Replacement Considerations

LT1790BCS6-3#TRPBF

Voltage Reference FAQ

Can the LT1790BCS6-3 be used as a negative voltage reference?

Yes, because the device can sink current, it can operate as a micropower negative voltage reference while maintaining the same performance characteristics as a positive reference.

What is the minimum operating voltage for the 3V output option?

The minimum operating voltage is 3.5V when sourcing 5mA and 3.8V when sinking 3mA, ensuring the output remains within the specified regulation limits.