LM431CIM

$0.53

Description：IC VREF SHUNT -0.6%/+0.4% 8SOIC
Series：-
Mfr：Texas Instruments
Package：Tube

SKU:593421cf573a Category: Voltage Reference Brand: Texas Instruments

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Product introduction

LM431CIM is listed in the Voltage Reference range at ChipApex. The manufacturer field lists Texas Instruments. Its product description is IC VREF SHUNT -0.6%/+0.4% 8SOIC. Review the specifications below when checking this part for your BOM.

Voltage Reference specifications for LM431CIM

Description：IC VREF SHUNT -0.6%/+0.4% 8SOIC
Series：-
Mfr：Texas Instruments
Package：Tube
Output Type：Adjustable
Voltage - Output (Min/Fixed)：2.5V
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 LM431CIM

LM431CIM

Voltage Reference Overview

The LM431CIM is a three-terminal adjustable precision Zener shunt regulator manufactured by Texas Instruments. It provides an output voltage range from 2.5 V to 36 V, set via two external resistors. The device features a typical reference voltage of 2.495 V with a maximum initial accuracy of ±0.5%. It operates within a cathode current range of 1 mA to 100 mA and maintains temperature stability over the industrial range of -40°C to +85°C.

Voltage Reference Feature Summary

Temperature compensated for operation over the full temperature range
Fast turn-on response characteristics
Low dynamic output impedance
Available in space-saving SOT-23 package

Voltage Reference Applications

Adjustable linear and switching power supplies
Voltage monitoring circuits
Current source and sink applications
Zener diode replacements

Voltage Reference Procurement Notes

Verify the specific suffix against the manufacturer's orderable addendum to confirm package type and status. Confirm RoHS compliance and lead finish details. Ensure the selected variant matches the required operating temperature range for the target application environment.

Voltage Reference Selection Notes

Select based on required tolerance grade and operating temperature range. Verify that the external resistor network allows the cathode current to remain between 1 mA and 100 mA across all supply and load conditions. Consider thermal dissipation limits when designing the PCB layout.

Voltage Reference Part Context

This component belongs to the LM431 family of adjustable precision shunt regulators. It serves as a direct replacement for many standard Zener diodes in voltage regulation and reference applications. The device is available in multiple packages including SOIC-8, SOT-23, and TO-92 to accommodate different footprint requirements.

Voltage Reference Replacement Considerations

LM431CIM/NOPB

Voltage Reference FAQ

How is the output voltage determined?

The output voltage is programmable from 2.5 V to 36 V using two external resistors configured as a voltage divider network connected to the reference pin.