LM385PWE4-1-2

Overview

The LM385PWE4-1-2 is a micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 1.235 V with an initial accuracy of ±2%. The device operates within a temperature range of 0°C to +70°C and features a temperature coefficient of 20 ppm/°C. It supports a maximum shunt current of 20 mA and is housed in an 8-pin TSSOP package.

Feature Summary

• Provides a stable 1.235 V reference voltage suitable for precision applications
• Micropower design minimizes energy consumption during operation
• Low temperature coefficient ensures consistent performance across operating ranges

Applications

• Portable battery-powered instrumentation
• Data acquisition systems requiring stable references
• Microcontroller analog-to-digital converter biasing

Procurement Notes

Verify the E4 suffix indicates lead-free composition compliant with RoHS standards. Confirm the specific package variant matches the required PCB footprint. Check for obsolescence notices as this component may be subject to lifecycle changes. Ensure the manufacturer source is authorized to guarantee authenticity.

Selection Notes

Select this part when a low-cost, fixed 1.235 V reference is needed in surface-mount form factors. Compare against adjustable variants if circuit flexibility is required. Consider the ±2% tolerance for budget-sensitive designs where higher precision is not critical. Verify thermal management requirements for the TSSOP enclosure.

Part Context

This component belongs to the LM385 family of micropower voltage references. It serves as a cost-effective alternative to bandgap references in simple shunt configurations. The E4 designation typically denotes environmental compliance modifications within the standard product line.

Replacement Considerations

• LM385PW-1-2
• LM385PWR-1-2