LM285LPE3-2-5

Overview

The LM285LPE3-2-5 is a fixed shunt voltage reference from Texas Instruments, providing a nominal output of 2.5 V with an initial accuracy of ±1.5%. It operates within a temperature range of -40°C to +85°C and features a temperature coefficient of 20 ppm/°C. The device supports a maximum shunt current of 20 mA and a minimum cathode current of 20 µA. Packaged in a TO-92-3 through-hole housing, it is RoHS compliant and lead-free.

Feature Summary

• Provides a stable 2.5 V reference voltage using zener diode technology
• Offers high precision with ±1.5% initial accuracy tolerance
• Features low temperature drift for consistent performance across operating ranges

Applications

• Portable battery-powered equipment requiring precise voltage regulation
• Data acquisition systems needing stable reference sources
• Power supply circuits utilizing shunt regulation topologies

Procurement Notes

Verify the specific suffix 'E3' indicates lead-free construction compliant with RoHS standards. Confirm the package type matches the required TO-92-3 footprint for your PCB layout. Ensure the operating environment stays within the specified -40°C to +85°C range to maintain the stated accuracy and temperature coefficient specifications.

Selection Notes

Select this component when a fixed 2.5 V reference is required in a through-hole package. It is suitable for applications prioritizing cost-effectiveness over ultra-low noise or higher precision grades. Consider the 20 mA maximum current limit when designing the series resistor network to ensure proper biasing under all load conditions.

Part Context

This part belongs to the LM285 family of micro-power shunt voltage references. It serves as a fundamental building block for analog signal conditioning and power management circuits where a reliable, low-cost reference voltage is essential. The E3 suffix denotes environmental compliance, distinguishing it from older non-compliant variants.

Replacement Considerations

• LM285LP-2-5

FAQ

What is the minimum operating current for the LM285LPE3-2-5?

The minimum cathode current required for proper regulation is 20 µA.

Does the E3 suffix affect the electrical performance?

No, the E3 suffix indicates lead-free packaging and RoHS compliance; the electrical characteristics remain identical to the standard LM285LP-2-5.