LTC1258CMS8-5#PBF

Overview

The Analog Devices LTC1258CMS8-5#PBF is a micropower bandgap voltage reference housed in an 8-lead MSOP package. It provides a fixed 5V output with a maximum initial accuracy of 0.18% and a temperature coefficient of 60 ppm/°C over the 0°C to +70°C range. The device features a maximum dropout voltage of 200mV at 10mA load current and draws only 4μA typical quiescent current. It supports sourcing up to 10mA and sinking up to 2mA, operating within an input voltage range of 5.2V to 12.6V.

Feature Summary

• Curvature compensation and trimmed thin-film resistors ensure high output accuracy and low drift.
• Internal P-channel pass transistor enables ultralow quiescent current and minimal dropout voltage.
• Stable operation without external output bypass capacitors, suitable for space-constrained designs.
• Capable of sourcing 10mA and sinking 2mA for precision regulator applications.

Applications

• Battery-powered systems
• Handheld instruments
• Precision power supplies
• A/D and D/A converters

Procurement Notes

Verify the specific suffix #PBF indicates lead-free finish and RoHS compliance. Confirm the MSOP-8 package type matches the PCB footprint requirements. Ensure the 0°C to +70°C commercial temperature range aligns with the system environment. Check for obsolescence status as some variants are marked obsolete while others remain active.

Selection Notes

Select this component when a fixed 5V reference is required with strict power constraints. The low dropout characteristic allows operation from supply voltages close to the output level. Verify that the 60 ppm/°C drift meets the application's long-term stability needs compared to lower-drift alternatives.

Part Context

This part belongs to the LTC1258 series of micropower low dropout references. It shares architectural similarities with adjustable (LTC1258) and other fixed voltage options like 2.5V, 3V, and 4.1V variants. All series members utilize curvature compensation and offer similar quiescent current profiles.

Replacement Considerations

LTC1258CS8-5#PBF offers the same electrical specifications in an SOIC-8 package instead of MSOP-8. Other series members such as LTC1258CMS8-4.1#PBF provide different fixed voltages but share the same package and performance characteristics.