LM385M3X-1.2

$0.70

Description：IC VREF SHNT -2.43%/+2.02% SOT23
Series：-
Mfr：National Semiconductor
Package：Bulk

SKU:a721bd20f96f Category: Voltage Reference Brand: National Semiconductor

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Product introduction

Product Detailed Parameters

Description：IC VREF SHNT -2.43%/+2.02% SOT23
Series：-
Mfr：National Semiconductor
Package：Bulk
Output Type：Fixed
Voltage - Output (Min/Fixed)：1.235V
Voltage - Output (Max)：-
Current - Output：20 mA
Operating Temperature：0°C ~ 70°C (TA)
Mounting Type：Surface Mount
Package / Case：TO-236-3, SC-59, SOT-23-3
Supplier Device Package：SOT-23-3
Grade：-
Qualification：-

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LM385M3X-1.2

Overview

The LM385M3X-1.2 is a micropower shunt voltage reference diode manufactured by Texas Instruments, originally part of the National Semiconductor portfolio. It provides a stable nominal output voltage of 1.235V with an initial accuracy of ±2%. The device operates within a temperature range of 0°C to +70°C and features a low temperature coefficient of 150ppm/°C. Designed for surface-mount applications, it utilizes a compact SOT-23 package (dimensions: 2.90 x 1.30mm, height 1.12mm). Key electrical specifications include a maximum output current of 20mA, a minimum cathode current of 10μA, and a noise level of 60µVrms.

Feature Summary

Provides a fixed 1.235V reference voltage suitable for precision analog circuits
Operates over a wide current range from 10μA to 20mA for flexible biasing
Utilizes a compact SOT-23 surface-mount package for space-constrained designs

Applications

Portable battery-powered instrumentation requiring low quiescent current
Data acquisition systems needing stable reference voltages
Microprocessor power supply monitoring circuits

Procurement Notes

Verify that the ordering suffix 'M3X' corresponds to the specific SOT-23 tape-and-reel packaging configuration required for your assembly process. Confirm that the component meets the commercial temperature range requirements of 0°C to +70°C for your intended environment. Ensure compatibility with standard reflow soldering profiles for small outline transistors.

Selection Notes

Select this component when a low-cost, micropower shunt reference is needed in a surface-mount format. It is appropriate for applications where ±2% initial accuracy is sufficient and operating temperatures remain within the commercial range. Consider alternative packages if higher thermal performance or different pin counts are required.

Part Context

This component belongs to the LM385 family of adjustable micropower voltage references, which includes variants like the LM185 and LM285. The LM385 series is widely used as a bandgap reference element. The 'M3X' designation specifically identifies the SOT-23 surface-mount variant produced by Texas Instruments following its acquisition of National Semiconductor's semiconductor business.