LM385BLPE3-1-2

Overview

The LM385BLPE3-1-2 is a micropower shunt voltage reference manufactured by Texas Instruments. It provides a nominal output voltage of 1.235 V with an initial accuracy of ±1%. The device operates within a temperature range of 0°C to +70°C and features a low temperature coefficient of 20 ppm/°C. It supports a maximum shunt current of 20 mA and is housed in a TO-226-3 (TO-92) through-hole package.

Feature Summary

• Provides stable 1.235 V reference voltage for precision applications
• Low power consumption suitable for battery-operated systems
• High accuracy with ±1% initial tolerance
• Robust thermal stability across commercial temperature ranges

Applications

• Portable instrumentation requiring precise voltage references
• Battery-powered measurement devices
• Data acquisition systems
• Microprocessor supply monitoring circuits

Procurement Notes

Verify the component status as this specific part number may be subject to obsolescence or discontinuation notices from the manufacturer. Confirm that the E3 suffix denotes lead-free compliance and matches RoHS requirements for your assembly process. Ensure the TO-226-3 package type aligns with your PCB footprint design before finalizing procurement orders.

Selection Notes

Select this component when a fixed 1.235 V reference is required with high initial accuracy. It is appropriate for designs needing low quiescent current operation. Consider the through-hole package constraint if surface mount alternatives are not feasible. Verify that the 20 mA maximum current capability meets the load requirements of the reference circuit.

Part Context

This component belongs to the LM385 family of micropower shunt voltage references. It serves as a cost-effective solution for establishing stable reference voltages in analog and mixed-signal circuits. The device utilizes bandgap technology to maintain performance over varying temperatures and load conditions.

Replacement Considerations

LM385BLP-1-2

FAQ

What is the minimum operating current for the LM385BLPE3-1-2?

The device typically requires a minimum cathode current of approximately 15 µA to 20 µA to maintain regulation, depending on specific operating conditions.

Does the E3 suffix indicate a functional change?

No, the E3 suffix indicates lead-free packaging and RoHS compliance; it does not alter the electrical characteristics or functionality of the device.