LM385LPRE3-1-2

Overview

The LM385LPRE3-1-2 is a micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 1.235 V with an initial accuracy tolerance of ±1%. The device operates within a temperature range of -40°C to +85°C and features a standard temperature coefficient of 20 ppm/°C. Maximum cathode current is 15 µA, while the maximum output current capability reaches 20 mA. It is housed in a TO-92-3 (TO-226AA) through-hole package.

Feature Summary

• Micropower operation with low cathode current consumption
• High precision with ±1% initial accuracy tolerance
• Low temperature drift for stable performance across wide ranges

Applications

• Portable battery-powered instrumentation
• Data acquisition systems requiring precise references
• Temperature measurement circuits

Procurement Notes

Verify RoHS compliance status as indicated by the suffix E3. Confirm package type matches design requirements. Check component lifecycle status for obsolescence risks. Ensure operating temperature range meets system specifications. Validate pinout compatibility during integration.

Selection Notes

Select this component when high precision is required alongside low power consumption. The ±1% accuracy suits applications demanding tight voltage tolerances. Consider the through-hole package for prototyping or specific mechanical constraints. Evaluate thermal management needs given the extended industrial temperature range.

Part Context

This part belongs to the LM285 series of micropower shunt voltage references. It serves as a lead-free variant of the LM385 family, maintaining identical electrical characteristics while adhering to environmental standards. The series is designed for cost-sensitive applications requiring reliable voltage referencing.

Replacement Considerations

LM385LPR-1-2 is a documented substitute offering similar specifications in a tape-and-reel package format.