LM385Z/NOPB

Overview

The LM385Z/NOPB is a micropower shunt voltage reference manufactured by Texas Instruments. It utilizes a bandgap architecture to provide stable reference performance in a compact TO-92-3 through-hole package. The device operates within a temperature range of 0°C to +70°C and supports an adjustable output voltage configuration spanning from 1.24 V to 5.3 V. Key electrical characteristics include an initial accuracy of ±2% and a temperature coefficient of 150 ppm/°C. The component handles a maximum shunt current of 20 mA, making it suitable for low-power applications requiring precise voltage regulation.

Feature Summary

• Adjustable output voltage capability via external resistor network
• Micropower consumption design for energy-efficient operation
• Shunt topology providing stable reference against load variations

Applications

• Portable battery-powered instrumentation
• Data acquisition systems requiring stable reference voltages
• Microprocessor power supply monitoring circuits

Procurement Notes

Verify the specific suffix and package type during procurement to ensure compatibility with the intended PCB footprint. Confirm that the operational temperature range meets the environmental requirements of the target application. Cross-reference the manufacturer part number with official distributor catalogs to validate authenticity and current production status before finalizing orders.

Selection Notes

Select this component when an adjustable voltage reference is required in a through-hole package. Ensure the circuit design accommodates the 20 mA maximum shunt current limit. Verify that the ±2% initial accuracy and 150 ppm/°C temperature coefficient satisfy the system's precision requirements. Consider thermal management if operating near the upper temperature limit.

Part Context

This component belongs to the LM385 series of micropower voltage references from Texas Instruments. The series includes fixed and adjustable variants designed for general-purpose voltage referencing tasks. The LM385Z/NOPB specifically denotes the adjustable version housed in a TO-92 package, offering a balance between performance and cost for commercial applications.

Replacement Considerations

Compatible substitutes include other adjustable shunt references from the same family, such as the LM385M/NOPB in SOIC-8 or LM385BYZ-2.5/NOPB for fixed voltage needs. Verify pinout compatibility and electrical specifications before substitution.