LTC1258CS8-5#TRPBF

Overview

The LTC1258CS8-5#TRPBF is a micropower low dropout voltage reference in an 8-lead SOIC 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 up to 12.6V, featuring a typical quiescent current of 4μA and a maximum dropout voltage of 200mV at 10mA load. It can source up to 10mA and sink up to 2mA, ensuring stability without external output capacitors.

Feature Summary

• Micropower bandgap design with internal P-channel pass transistor for extended battery life
• Low dropout capability of 200mV maximum at full load current
• Capable of sourcing 10mA and sinking 2mA for precision regulator applications
• Stable operation guaranteed without the need for output bypass capacitors

Applications

• Battery-powered systems requiring minimal supply current
• Handheld instruments with space-constrained PCB layouts
• Precision power supplies utilizing series reference topology
• Analog-to-digital and digital-to-analog converter reference circuits

Procurement Notes

Verify that the specific suffix #TRPBF corresponds to tape and reel packaging rather than tube packaging when reviewing distributor listings. Confirm the manufacturer part number matches the exact voltage option and package type required for the design. Ensure compliance with RoHS directives as indicated by the PBF designation. Check for any obsolescence notices or lifecycle status updates from Analog Devices before finalizing procurement plans.

Selection Notes

Select this component when a fixed 5V reference is needed with high accuracy and low quiescent current. The SOIC-8 package is suitable for designs prioritizing standard surface mount assembly over smaller MSOP footprints. Consider the 40ppm/°C drift specification against environmental temperature variations. Evaluate the 10mA sourcing capability to ensure it meets the downstream circuit's current demands without exceeding thermal limits.

Part Context

This part belongs to the LTC1258 series of micropower low dropout references, which includes adjustable and fixed voltage options such as 2.5V, 3V, and 4.1V. The series utilizes curvature compensation and trimmed thin-film resistors to achieve high accuracy. Other members share similar electrical characteristics but differ in output voltage settings and package availability, offering flexibility for various precision analog applications.

Replacement Considerations

LTC1258CS8-5#PBF