LM385BLPRE3-1-2

Overview

The LM385BLPRE3-1-2 is a micropower shunt voltage reference manufactured by Texas Instruments. It provides a nominal output voltage of 1.235 V with an initial accuracy tolerance of ±1%. The device operates within a wide current range from 15 µA to 20 mA and features a low temperature coefficient of ±20 ppm/°C. Designed for commercial applications, it functions reliably across a temperature range of 0°C to +70°C. The component is housed in a surface-mount SOT-23 package (TO-263-3 variant designation often associated with the BL suffix in TI nomenclature, though specific pinout verification is required) and is RoHS compliant.

Feature Summary

• Provides stable 1.235 V reference voltage with high precision
• Operates efficiently at micropower levels starting from 15 µA
• Maintains stability over temperature with low drift characteristics
• Compatible with standard surface-mount assembly processes

Applications

• Portable battery-powered instrumentation requiring low quiescent current
• Data acquisition systems needing precise analog-to-digital converter references
• Temperature sensing circuits utilizing bridge configurations
• Medical equipment requiring stable bias voltages for sensor interfaces

Procurement Notes

Verify the exact package type and pinout configuration against the official datasheet before integration, as suffix variations can indicate different physical footprints or lead-free status. Confirm that the E3 suffix denotes lead-free composition and RoHS compliance for your specific regulatory requirements. Ensure the operating current remains within the 15 µA to 20 mA window to maintain specified accuracy and temperature coefficients.

Selection Notes

Select this component when a fixed 1.235 V reference is required with tight initial accuracy and low power consumption. It is suitable for designs where space is constrained due to its surface-mount packaging. Consider the ±1% tolerance if higher precision is not critical, or opt for tighter grades if budget allows. Ensure the thermal environment stays within the commercial grade limits of 0°C to +70°C for optimal performance.

Part Context

This part belongs to the LM385 family of micropower shunt voltage references from Texas Instruments. The family includes various output voltages and packages, offering flexibility for different design needs. The LM385 series is widely used in industrial and consumer electronics for providing stable reference points in analog signal chains. The BLP/B prefix typically indicates a specific package style and temperature grade within the broader product line.

Replacement Considerations

LM385BLPR-1-2: Direct equivalent with identical electrical specifications and functionality, differing primarily in tape-and-reel packaging format instead of bulk or cut-tape options.