LM431BIM

$0.71

Description：IC VREF SHUNT ADJ 1% 8SOIC
Series：-
Mfr：National Semiconductor
Package：Bulk

SKU:d66836101dc0 Category: Voltage Reference Brand: National Semiconductor

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Product introduction

LM431BIM is listed in the Voltage Reference range at ChipApex. The manufacturer field lists National Semiconductor. Its product description is IC VREF SHUNT ADJ 1% 8SOIC. Review the specifications below when checking this part for your BOM.

Voltage Reference specifications for LM431BIM

Description：IC VREF SHUNT ADJ 1% 8SOIC
Series：-
Mfr：National Semiconductor
Package：Bulk
Output Type：Adjustable
Voltage - Output (Min/Fixed)：2.495V
Voltage - Output (Max)：37 V
Current - Output：100 mA
Operating Temperature：-40°C ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：8-SOIC (0.154", 3.90mm Width)
Supplier Device Package：8-SOIC
Grade：-
Qualification：-

Voltage Reference datasheet and documents for LM431BIM

LM431BIM

Voltage Reference Overview

The LM431BIM is a three-terminal adjustable precision Zener shunt regulator manufactured by National Semiconductor. It provides an adjustable output voltage ranging from 2.495 V to 37 V with an initial accuracy of ±1%. The device features a maximum series reference input voltage of 37 V and a maximum shunt current of 100 mA. It operates within a temperature range of -40 °C to +85 °C and exhibits a temperature coefficient of 97 ppm/°C. The component is housed in an 8-SOIC package.

Voltage Reference Feature Summary

Three-terminal adjustable shunt regulator design
Guaranteed temperature stability across the operating range
Precision voltage reference capability

Voltage Reference Applications

Voltage regulation circuits
Power supply management systems
Battery chargers

Voltage Reference Procurement Notes

Verify the manufacturer designation, as Texas Instruments acquired National Semiconductor. Confirm the specific suffix (e.g., NOPB) indicates lead-free compliance if required. Ensure the package type matches the 8-SOIC specification. Check for RoHS compliance status in the official datasheet before procurement.

Voltage Reference Selection Notes

Select this component when a precise, adjustable shunt reference is required with ±1% initial accuracy. Consider the 37 V maximum input voltage limit for high-voltage applications. Evaluate the thermal performance against the 97 ppm/°C coefficient requirement. Compare against TL431 equivalents if pin compatibility or specific accuracy grades are needed.

Voltage Reference Part Context

The LM431 series serves as a direct replacement for traditional Zener diodes in many voltage regulation applications. It offers superior temperature stability and lower dynamic impedance compared to standard Zeners. The device functions as a programmable shunt regulator, allowing designers to set precise reference voltages using external resistors.