LTC1258CMS8-5#PBF

Overview

The LTC1258CMS8-5#PBF is a micropower bandgap voltage reference 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 60ppm/°C over the 0°C to +70°C range. The device features a maximum dropout voltage of 200mV at 10mA output current and draws only 4μA typical quiescent current. It supports sourcing up to 10mA and sinking up to 2mA, operating on input voltages from VOUT+0.2V to 12.6V.

Feature Summary

• Micropower low dropout series reference topology utilizing curvature compensation for high accuracy
• Capable of sourcing 10mA and sinking 2mA without requiring an external output bypass capacitor
• Internal P-channel pass transistor design ensures ultralow quiescent current across all load conditions

Applications

• Battery-powered systems requiring extended operational life
• Handheld instruments with space constraints
• Precision power supplies
• A/D and D/A converter reference circuits

Procurement Notes

Verify component authenticity through authorized Analog Devices channels or certified distributors. Confirm the specific MSOP-8 package marking LTEM matches the datasheet order information. Ensure storage conditions adhere to specified limits to prevent output voltage shifts caused by thermal hysteresis effects inherent to the package stress characteristics.

Selection Notes

Select this part when a fixed 5V precision reference is required in a compact surface-mount footprint. The 60ppm/°C drift specification suits commercial temperature ranges. Consider the adjustable LTC1258 variant if custom voltage levels are needed. Evaluate the internal P-channel architecture benefits regarding dropout performance compared to traditional bipolar designs for low-voltage headroom applications.

Part Context

This component belongs to the LTC1258 series of micropower references, which includes options for 2.5V, 3V, 4.1V, and adjustable outputs. The series is characterized by its small MSOP and SO packages and ability to operate with minimal supply current. It serves as a drop-in replacement for older shunt reference designs where power efficiency and board space are critical constraints.

Replacement Considerations

LTC1258CS8-5#PBF (SO-8 Package)