LM431SCCM32X

Product Overview

The LM431SCCM32X from onsemi is a shunt voltage reference IC designed for adjustable output applications. The device specifies a 2.495 V output reference voltage and a maximum output voltage of 36 V, with a rated output current of 100 mA and a cathode current of 1 mA. Its ±0.5% tolerance and 50 ppm/°C typical temperature coefficient define the accuracy and drift characteristics relevant to reference circuits. The part is offered in a surface-mount SOT-23-3 package, also identified as TO-236-3 and SC-59, and is specified for operation from -25°C to 85°C. This configuration suits compact board layouts where a shunt reference can establish a defined voltage point in power regulation, measurement, or control circuits.

Key Features

• Shunt voltage reference IC with adjustable output
• Output voltage range specified from 2.495 V to 36 V
• ±0.5% output tolerance
• 50 ppm/°C typical temperature coefficient
• 100 mA output current
• 1 mA cathode current
• Operating temperature range: -25°C to 85°C
• Surface-mount SOT-23-3 package (TO-236-3, SC-59)

Applications

• Regulation and feedback circuits in DC power supplies and converters
• Voltage reference generation for analog-to-digital converter front ends and sensor biasing
• Setpoint or threshold generation in control equipment
• Battery management and charging circuits requiring an adjustable reference

Design & Procurement Notes

When selecting the LM431SCCM32X, consider how the specified 1 mA cathode current and 100 mA output current interact with the reference circuit's load conditions. The adjustable output range of 2.495 V to 36 V, ±0.5% tolerance, and 50 ppm/°C typical temperature coefficient should be checked against the required set point and drift budget. The SOT-23-3 surface-mount package and -25°C to 85°C operating temperature range should be evaluated for board layout and ambient conditions. Confirm the exact onsemi part number and package designation when ordering, as the specified package is SOT-23-3.