LM285BXZ-2.5

Overview

The LM285BXZ-2.5 is a micropower shunt voltage reference diode manufactured by Texas Instruments, formerly National Semiconductor. It provides a fixed 2.5V output with an operating current range of 20 µA to 20 mA. The device features low dynamic impedance and low temperature coefficient characteristics. It is housed in a TO-92 package and operates within a temperature range of -40°C to +85°C.

Feature Summary

• Micropower two-terminal band-gap voltage regulator design
• Low dynamic impedance for stable regulation
• Low temperature coefficient for thermal stability

Applications

• Portable battery-powered instrumentation
• Voltage reference for analog-to-digital converters
• Temperature compensation circuits

Procurement Notes

Verify the manufacturer designation as Texas Instruments (TI) rather than National Semiconductor, as TI acquired NS. Confirm the specific suffix 'BXZ' indicates the TO-92 plastic package variant. Ensure the part number matches the required 2.5V fixed reference specification and check for RoHS compliance indicators such as NOPB if applicable.

Selection Notes

Select this component when a fixed 2.5V reference is required in space-constrained applications due to its small TO-92 footprint. It is suitable for designs requiring operation at very low currents down to 20 µA. Consider the ±1.5% initial tolerance for general-purpose applications where high precision is not critical.

Part Context

This device belongs to the LM285 family of micropower voltage references, which also includes the LM185 and LM385 variants. These components share similar electrical characteristics but differ in temperature ranges and manufacturing processes. The LM285 series is designed for cost-sensitive applications requiring reliable voltage regulation.

Replacement Considerations

• LM285Z-2.5/NOPB
• LM285BYZ-2.5/NOPB