LT1790BCS6-1.25#TRMPBF

Voltage Reference Overview

The LT1790BCS6-1.25#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 1.25V with B grade accuracy of ±0.1%. The device features a maximum temperature coefficient of 25ppm/°C and operates within a supply voltage range of 2.6V to 18V. It draws a maximum supply current of 75µA and supports both sourcing and sinking currents. The component is specified for commercial operation between 0°C and 70°C.

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 negative voltage reference.
• Post-package trimming reduces temperature coefficient and enhances 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 against official documentation to confirm tape and reel packaging specifications. Ensure the B grade designation matches the required ±0.1% initial accuracy tolerance. Confirm the commercial temperature range (0°C to 70°C) aligns with system environmental requirements before procurement.

Voltage Reference Selection Notes

Select this component when low power dissipation and small package size are critical constraints. The B grade offers a balance of cost and performance for applications requiring ±0.1% accuracy. Consider the minimum operating voltage relative to the load current requirements, as dropout characteristics vary between sourcing and sinking modes.

Voltage Reference Part Context

This part belongs to the LT1790 family of micropower SOT-23 low dropout references. The family utilizes curvature compensation technology to achieve low temperature coefficients. Variants differ by output voltage options, accuracy grades (A or B), and temperature ranges (commercial or industrial).

Voltage Reference Replacement Considerations

LT1790BCS6-1.25#PBF

Voltage Reference FAQ

Can the LT1790BCS6-1.25 operate as a negative voltage reference?

Yes, because it can sink current, it can be configured to operate as a micropower negative voltage reference with performance similar to its positive reference mode.

What is the maximum supply current for this device?

The maximum supply current is 75µA under no-load conditions.