LTC1798CS8-3#PBF

Overview

The LTC1798CS8-3#PBF is a micropower low dropout voltage reference from Analog Devices, housed in an 8-lead plastic SO package. It provides a fixed nominal output voltage of 3V 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 and draws 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

• Curvature compensation and trimmed thin-film resistors ensure high accuracy and low drift across the operating temperature range.
• Internal P-channel pass transistor enables ultralow quiescent current consumption and minimal power dissipation during operation.
• Stable without external output bypass capacitors, allowing for fast settling times and reduced printed circuit board space requirements.

Applications

• Battery-powered systems requiring extended operational life
• Handheld instruments with strict size constraints
• Precision power supplies
• Analog-to-digital and digital-to-analog converter circuits

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm that the specific part marking matches the datasheet specifications. Ensure proper electrostatic discharge handling procedures are followed during storage and installation to prevent damage to the sensitive internal circuitry.

Selection Notes

Select this component when a fixed 3V reference is required with minimal supply current draw. It is suitable for designs where the input voltage may drop close to the output level due to its low dropout characteristic. Consider the SO-8 package dimensions for layout compatibility.

Part Context

This device belongs to the LTC1798 series of micropower bandgap references. The series includes various fixed voltage options (2.5V, 4.1V, 5V) and an adjustable version. All variants share similar electrical characteristics regarding quiescent current, accuracy, and package style, differing primarily in their nominal output voltage settings.

Replacement Considerations

LTC1798CS8-3#TRPBF