LM285BXZ-1.2/LFT4

$1.10

Description：IC VREF SHUNT 1% TO92-3
Series：-
Mfr：National Semiconductor
Package：Bulk

SKU:c925a6ed2569 Category: Voltage Reference Brand: National Semiconductor

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Product introduction

Product Detailed Parameters

Description：IC VREF SHUNT 1% TO92-3
Series：-
Mfr：National Semiconductor
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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LM285BXZ-1.2/LFT4

Overview

The LM285BXZ-1.2/LFT4 is a fixed shunt voltage reference diode from the LM285 series, manufactured by National Semiconductor (now Texas Instruments). It provides a nominal output voltage of 1.25 V with an initial accuracy tolerance of 1%. The device operates within a temperature range of -40°C to 85°C and is housed in an SC-70-3 surface-mount package. It functions as a low-power zener-like reference suitable for precision applications requiring stable voltage regulation.

Feature Summary

Provides a precise fixed reference voltage of 1.25 V
Operates effectively in low-current shunt configurations
Maintains stability across industrial temperature ranges

Applications

Portable battery-powered instrumentation
Data acquisition systems
Microprocessor supervisory circuits

Procurement Notes

Verify the manufacturer designation, as National Semiconductor assets were acquired by Texas Instruments. Confirm the specific suffix LFT4 corresponds to the SC-70-3 package and tape-and-reel configuration. Ensure compliance with current RoHS directives and check for any obsolescence notices or lifecycle status changes associated with the legacy brand name.

Selection Notes

Select this component when a low-cost, low-power voltage reference is required for shunt regulator applications. The 1.25 V output is ideal for referencing ADCs or DACs in single-supply systems. Consider the thermal resistance of the SC-70-3 package if high power dissipation is anticipated, although typical operation involves minimal current draw.

Part Context

The LM285 series represents a family of micro-power voltage reference diodes designed for cost-sensitive applications. These devices utilize bandgap technology to achieve temperature compensation. The LM285BXZ variant specifically denotes the 1.25 V version in a compact surface-mount form factor, distinguishing it from higher voltage options like the 2.5 V or 5.0 V variants within the same product line.