LM431CCZXA

Product Overview

The LM431CCZXA from Fairchild Semiconductor is an adjustable shunt voltage reference integrated circuit for use in analog and power-management circuits. The device is specified with an output voltage range from 2.495V to 36V and a tolerance of ±0.5%, with a typical temperature coefficient of 50ppm/°C. It has a 100 mA output current specification and a 1 mA cathode current specification. The component uses a through-hole TO-92-3 package, also identified as TO-226-3 formed leads, and is specified for operation over a temperature range of -25°C to 85°C.

Key Features

• Adjustable shunt voltage reference with output specified from 2.495V to 36V.
• Tolerance of ±0.5% and typical temperature coefficient of 50ppm/°C.
• 100 mA output current specification for reference circuit loading.
• 1 mA cathode current specification for circuit biasing considerations.
• Through-hole TO-92-3 package, also described as TO-226-3 formed leads.
• Operating temperature range specified from -25°C to 85°C.

Applications

• Feedback reference networks in adjustable power supplies.
• Setpoint references in measurement and instrumentation front ends.
• Reference biasing in analog signal conditioning assemblies.

Design & Procurement Notes

Designers can use the adjustable output range to set reference levels between 2.495V and 36V, while including the ±0.5% tolerance and 50ppm/°C typical coefficient in accuracy budgets. The 100 mA output current and 1 mA cathode current specifications should be checked against the circuit operating conditions used for the selected setting. The through-hole TO-92-3 package requires board space and lead clearance appropriate to the mounting method, and the -25°C to 85°C operating range should be matched to the intended product environment.