LT1790AIS6-5#TRMPBF

Voltage Reference Overview

The LT1790AIS6-5#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 5V output with an initial accuracy of ±0.05% and a maximum temperature coefficient of 10ppm/°C. The device operates within a supply voltage range of 5.5V to 18V and draws a maximum no-load supply current of 80µA. It supports both sourcing up to 5mA and sinking up to 3mA currents. The component is specified for industrial temperatures ranging from –40°C to +85°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 positive or negative reference applications.
• Low thermal hysteresis minimizes output shifts during temperature cycling.
• Small ThinSOT™ package size reduces power dissipation and board space.

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 with 500 units per reel, distinct from bulk or standard tape options. Confirm the 'I' grade designation corresponds to the –40°C to +85°C industrial temperature range. Ensure the 'S6' package code matches the required 6-lead TSOT-23 footprint for PCB layout compatibility.

Voltage Reference Selection Notes

Select this part when high precision (±0.05%) and low drift (10ppm/°C) are required in a compact form factor. It is suitable for battery-powered designs due to its micropower consumption and low dropout characteristics. Consider the current sourcing/sinking capabilities if the application requires bidirectional load regulation or negative reference generation.

Voltage Reference Part Context

This component belongs to the LT1790 family of micropower SOT-23 low dropout references. The family combines high accuracy with small package size, utilizing curvature compensation and trimmed thin-film resistors. Other variants in the series offer different output voltages such as 1.25V, 2.5V, and 3.3V, with varying accuracy grades like A (0.05%) and B (0.1%).

Voltage Reference Replacement Considerations

LT1790AIS6-5#TRPBF

Voltage Reference FAQ

Can the LT1790AIS6-5 be used as a negative voltage reference?

Yes, because it can sink current, it can operate as a micropower negative voltage reference with the same performance as a positive reference.

What is the minimum operating voltage for the 5V output version?

The minimum operating voltage is 5.5V to maintain regulation, with a typical dropout voltage of 120mV when sourcing 5mA.