LM4040D25ILP

Overview

The LM4040D25ILP is a micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 2.5 V with an initial accuracy tolerance of ±1%. The device operates within a temperature range of -40°C to +85°C and features a temperature coefficient of 150 ppm/°C. It supports a maximum cathode current of 15 mA and requires a minimum operating current of 80 µA. The component is housed in a TO-92-3 through-hole package, suitable for surface mount or standard PCB mounting applications requiring precision voltage regulation.

Feature Summary

• Provides stable 2.5 V reference voltage with ±1% initial accuracy
• Micropower operation with low minimum cathode current requirement
• Robust thermal performance across extended industrial temperature ranges
• Compact three-pin through-hole packaging for versatile integration

Applications

• Precision analog-to-digital converter (ADC) reference sources
• Digital-to-analog converter (DAC) voltage references
• Battery-powered measurement instrumentation circuits
• Portable electronic device power management systems

Procurement Notes

Verify the specific suffix ILP confirms the TO-92-3 through-hole package variant rather than surface-mount options. Confirm the D grade indicates ±1% accuracy tolerance against project requirements. Check manufacturer lifecycle status as availability may vary. Ensure RoHS compliance documentation matches regional regulatory standards. Validate pinout compatibility with existing board layouts before procurement.

Selection Notes

Select this component when a fixed 2.5 V reference with moderate precision is required in a through-hole form factor. The ±1% tolerance suits general-purpose applications where tighter tolerances are unnecessary. Consider the 150 ppm/°C temperature coefficient for environments with significant thermal fluctuations. Evaluate the 80 µA minimum current draw against low-power system constraints. Compare against higher accuracy grades if stricter voltage stability is needed.

Part Context

This part belongs to the LM4040 family of micropower shunt voltage references from Texas Instruments. The series offers various fixed output voltages and accuracy grades. The LM4040D25ILP specifically targets cost-sensitive applications requiring reliable voltage referencing in through-hole designs. It complements other package variants like SOT-23 and SC-70 for different mounting needs.

Replacement Considerations

LM4040D25IDBZT serves as a surface-mount alternative with identical electrical specifications in a SOT-23-3 package. LM4040C25ILP offers improved ±0.5% accuracy in the same TO-92-3 through-hole package. Verify pinout compatibility and thermal characteristics when substituting between accuracy grades or package types.