LM385PWE4-2-5

Overview

The LM385PWE4-2-5 is a micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 2.5V with an initial accuracy tolerance of ±3%. The device operates within a temperature range of 0°C to +70°C and features a standard temperature coefficient of 20ppm/°C. It supports a maximum cathode current of 20mA and requires a minimum operating current of 15µA. The component is housed in an 8-TSSOP surface-mount package, measuring 0.173 inches (4.40mm) in width.

Feature Summary

• Provides stable micropower shunt voltage regulation for precision applications
• Features low temperature coefficient for consistent performance across operating ranges
• Designed for surface-mount integration via compact TSSOP packaging

Applications

• Portable battery-powered instrumentation systems
• Data acquisition circuits requiring precise analog references
• Microprocessor-based supervisory control logic

Procurement Notes

Verify the specific suffix E4 against current manufacturer documentation to confirm compliance status and pinout compatibility. Confirm that the 8-TSSOP footprint matches the target PCB design constraints. Ensure the operating temperature range aligns with the intended environmental conditions. Cross-reference the exact part number with official distributors to avoid obsolete stock or incompatible revisions.

Selection Notes

Select this component when a fixed 2.5V reference is required in a surface-mount form factor. The ±3% tolerance suits general-purpose applications where high precision is not critical. Consider the 20ppm/°C temperature coefficient for stability needs. Verify that the 20mA maximum current capability meets the load requirements of the reference circuit design.

Part Context

This part belongs to the LM385 family of micropower shunt voltage references from Texas Instruments. The 'E4' suffix typically denotes lead-free composition and RoHS compliance. It shares functional similarities with other LM385 variants but differs in package type and manufacturing specifications. The device serves as a cost-effective reference solution for consumer and industrial electronics.

Replacement Considerations

LM385PWR-2-5 is a confirmed substitute offering identical electrical characteristics and pin configuration in the same 8-TSSOP package.