LM431SACMLX

Product Overview

The LM431SACMLX from Fairchild Semiconductor is a shunt voltage reference integrated circuit with an adjustable output. The supplied data lists a minimum or fixed output voltage of 2.5V, a maximum output voltage of 36 V, and a maximum output current of 100 mA. The device tolerance is ±2%, and the temperature coefficient is 50ppm/°C typical. It is specified for surface-mount assembly in a TO-243AA package, with the supplier device package identified as SOT-89-3. The operating temperature range is -25°C to 85°C at ambient temperature (TA), and the cathode current is listed as 1 mA.

Key Features

• Shunt reference topology with adjustable output
• Output voltage range from 2.5V to 36 V
• Output current capability of 100 mA
• Tolerance of ±2%
• Typical temperature coefficient of 50ppm/°C
• Surface-mount TO-243AA package, SOT-89-3 supplier device package
• Operating ambient temperature range of -25°C to 85°C (TA)
• Cathode current listed as 1 mA

Applications

• Providing a reference level in adjustable power regulation circuits
• Setting a bias voltage in analog signal conditioning assemblies
• Establishing a reference node in embedded control boards

Design & Procurement Notes

Designers should verify that the required output voltage, current, tolerance, temperature coefficient, cathode current, and ambient temperature range align with the circuit before selection. The surface-mount SOT-89-3 package is suitable for board layouts that use surface-mount assembly processes, while the 2.5V to 36 V adjustable output range allows reference settings across multiple voltage domains. Because the supplied lifecycle status is Obsolete, procurement teams should assess lifecycle implications and consider the status for new designs or extended production schedules. No automotive, industrial, or military qualification is stated in the supplied data.