LTC1258CS8-4.1#PBF

Overview

The Analog Devices LTC1258CS8-4.1#PBF is a micropower bandgap voltage reference housed in an 8-lead plastic SO package. It provides a nominal output voltage of 4.096V with a maximum initial accuracy of 0.15% and a maximum temperature coefficient of 40ppm/°C. The device features a typical quiescent current of 4μA and a maximum dropout voltage of 200mV at 10mA output current. It can source up to 10mA and sink up to 2mA, operating within an input voltage range of 1V to 12.6V. The component is specified for operation over a temperature range of 0°C to 70°C.

Feature Summary

• Combines high accuracy and low drift with very low supply current and small package size
• Features curvature compensation for low temperature coefficient and trimmed thin-film resistors
• Capable of sourcing 10mA and sinking 2mA for precision regulator applications
• Stable without an output bypass capacitor while accepting capacitance up to 1μF

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 when ordering. Confirm the S8 package designation matches the required 8-lead plastic SO footprint for your PCB layout. Ensure the 4.1V output variant aligns with system voltage requirements. Check for any obsolete status or tape and reel alternatives if volume production is planned.

Selection Notes

Select this part for applications requiring a fixed 4.096V reference with minimal board space. Consider the 40ppm/°C drift specification against environmental temperature variations. Evaluate the 200mV dropout limit relative to the minimum available supply voltage under load. Compare the 4μA quiescent current against battery life requirements for portable designs.

Part Context

This component belongs to the LTC1258 series of micropower low dropout references from Analog Devices. The series includes variants with outputs of 2.5V, 3V, 4.1V, 5V, and an adjustable version. All members share similar electrical characteristics, differing primarily in their fixed output voltages or feedback configuration for adjustability.

Replacement Considerations

LTC1258CMS8-4.1#PBF (MSOP package equivalent)

FAQ

Is an output capacitor required for stability?

No, the LTC1258 series is stable without an output bypass capacitor, though it remains stable with capacitance up to 1μF.

What is the maximum output current capability?

The device can source up to 10mA and sink up to 2mA.