LTC1798CS8-5#TRPBF

Overview

The LTC1798CS8-5#TRPBF is a micropower bandgap voltage reference from Analog Devices, housed in an 8-lead plastic SO package. It provides a fixed 5V output with a maximum initial accuracy of 0.15% and a temperature coefficient of 40ppm/°C. The device operates within an input voltage range of 2.7V to 12.6V, drawing a typical quiescent current of 4µA. It features a maximum dropout voltage of 200mV at 10mA output current and can source up to 10mA while sinking up to 2mA.

Feature Summary

• Combines high accuracy and low drift with very low supply current and small package size
• Features ultralow quiescent current and low dropout voltage ideal for battery-powered equipment
• Stable without an output bypass capacitor but also stable with capacitance up to 1µF

Applications

• Battery-Powered Systems
• Handheld Instruments
• Precision Power Supplies
• A/D and D/A Converters

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging when sourcing this component. Confirm that the manufacturer designation matches Analog Devices Inc. or its predecessor Linear Technology. Ensure the part status aligns with current availability requirements as distribution channels may vary.

Selection Notes

Select this component for applications requiring a fixed 5V precision reference with minimal power consumption. The 0.15% initial accuracy and 40ppm/°C drift suit systems needing stable voltage regulation over temperature variations. The ability to operate without external capacitors simplifies PCB layout in space-constrained designs.

Part Context

This part belongs to the LTC1798 series of micropower low dropout references. The series includes fixed voltage options such as 2.5V, 3V, 4.1V, and 5V, alongside an adjustable variant. These references utilize curvature compensation and trimmed thin-film resistors to achieve their performance specifications.

Replacement Considerations

Consult manufacturer documentation for direct substitutes. Related parts include LT1389, LT1634, LT1460, and LT1461.