LM385PW-1-2

Overview

The LM385PW-1-2 is a micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed nominal output voltage of 1.235 V with an initial accuracy of 1%. The device operates within a temperature range of 0°C to +70°C and features a low temperature coefficient of 20 ppm/°C. It supports a maximum shunt current of 20 mA and draws a typical cathode current of 15 µA. The component is housed in an 8-pin TSSOP surface-mount package.

Feature Summary

• Provides a stable 1.235 V reference voltage suitable for precision applications
• Operates with extremely low quiescent current for power efficiency
• Maintains high stability across the commercial temperature range

Applications

• Portable battery-powered instrumentation
• Data acquisition systems requiring precise voltage references
• Microprocessor-based circuits needing stable supply monitoring

Procurement Notes

Verify the specific suffix 'PW' confirms the 8-TSSOP package and '1-2' denotes the 1% accuracy grade. Confirm RoHS compliance status as manufacturing updates may alter environmental declarations. Check for active production status or obsolescence notices from Texas Instruments before finalizing procurement plans.

Selection Notes

Select this component when a fixed 1.235 V reference is required in a compact surface-mount form factor. Ensure the application current does not exceed the 20 mA maximum shunt limit. Consider the 1% initial accuracy if tighter tolerances are unnecessary, as higher precision variants exist within the family.

Part Context

This part belongs to the LM385 series of micropower voltage references. It shares core electrical characteristics with through-hole and other surface-mount variants like the LM385BLP-1-2 and LM385PWR-1-2, differing primarily in packaging and pin configuration to suit different board layout requirements.

Replacement Considerations

LM385PWR-1-2 offers identical electrical specifications in a tape-and-reel package format.