LM285LPE3-1-2

Description：IC VREF SHUNT 1% TO92-3
Series：-
Mfr：Texas Instruments
Package：Bulk

SKU:8713ba2d2a36 Category: Voltage Reference Brand: Texas Instruments

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Product introduction

Product Detailed Parameters

Description：IC VREF SHUNT 1% TO92-3
Series：-
Mfr：Texas Instruments
Package：Bulk
Output Type：Fixed
Voltage - Output (Min/Fixed)：1.235V
Voltage - Output (Max)：-
Current - Output：20 mA
Operating Temperature：-40°C ~ 85°C (TA)
Mounting Type：Through Hole
Package / Case：TO-226-3, TO-92-3 (TO-226AA)
Supplier Device Package：TO-92-3
Grade：-
Qualification：-

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LM285LPE3-1-2

Overview

The LM285LPE3-1-2 is a shunt voltage reference IC manufactured by Texas Instruments, designed for precision applications requiring stable voltage regulation. It operates within a temperature range of -40°C to +85°C and utilizes a TO-92-3 through-hole package. The device provides a fixed output voltage of 1.235V with an initial accuracy tolerance of ±1%. Key electrical characteristics include a maximum shunt current of 20 mA, a minimum operating cathode current of 10 µA, and a standard temperature coefficient of 20 ppm/°C. Noise performance is specified at 60 µVrms over the 10 Hz to 10 kHz frequency band.

Feature Summary

Provides a precise fixed reference voltage of 1.235V with high initial accuracy.
Operates effectively with low minimum cathode current requirements for micro-power efficiency.
Features low noise characteristics suitable for sensitive analog signal conditioning.
Utilizes a robust TO-92-3 through-hole package for reliable circuit board integration.

Applications

Precision analog-to-digital converter (ADC) reference sources
Battery-powered instrumentation circuits
Temperature sensing systems requiring stable bias voltages
Portable electronic devices with strict power consumption limits

Procurement Notes

Verify the specific suffix 'E3' indicates lead-free compliance and RoHS3 conformity as per manufacturer documentation. Confirm the package type matches the required TO-92-3 form factor for your PCB layout. Ensure the operating environment stays within the specified -40°C to +85°C thermal range to maintain the stated ±1% accuracy and 20 ppm/°C temperature coefficient specifications.

Selection Notes

Select this component when a fixed 1.235V reference is required in a through-hole configuration. It is suitable for designs prioritizing low quiescent current operation due to its 10 µA minimum cathode current specification. Consider the 20 ppm/°C temperature coefficient for applications where moderate thermal stability is acceptable without active compensation. Compare against adjustable variants if flexible voltage setting is needed instead of a fixed output.

Part Context

This part belongs to the LM285 family of shunt voltage references from Texas Instruments. The LM285 series is widely used in general-purpose power management applications. The 'LP' designation typically refers to the plastic TO-92 package style, while 'E3' denotes environmental compliance. This specific model offers a lower voltage option compared to the common 2.5V variant, catering to low-voltage reference needs.

Replacement Considerations

LM285BXZ-2.5/NOPB is listed as a direct substitute alternative by the manufacturer, though it differs in output voltage and package type. Verify pinout compatibility and electrical parameter alignment before substitution. Other LM285 variants may share functional similarities but require validation of voltage tolerance and package dimensions.