LM431ACZ

Product Overview

LM431ACZ is an onsemi shunt voltage reference with an adjustable output. The device uses a through-hole TO-92-3 package and provides an output range from 2.5V to 36V with a ±2% tolerance. It supports up to 100 mA output current and specifies a 1 mA cathode current. The typical temperature coefficient is 50ppm/°C, and the operating ambient temperature range is -25°C to 85°C. This configuration is suitable for circuits that need a selectable reference voltage in a compact through-hole format.

Key Features

• Adjustable shunt voltage reference with output from 2.5V to 36V
• ±2% output tolerance and 50ppm/°C typical temperature coefficient
• 100 mA output current capability and 1 mA cathode current
• Through-hole TO-92-3 package for board mounting
• Operating ambient temperature range of -25°C to 85°C

Applications

• Adjustable reference voltage generation in analog measurement and instrumentation circuits
• Shunt biasing networks that require a selectable cathode-referenced voltage
• Reference setting for feedback control circuits operating within 2.5V to 36V

Design & Procurement Notes

Design considerations include the adjustable output range, ±2% tolerance, and 50ppm/°C typical temperature coefficient when selecting a reference point for analog or feedback circuits. The 100 mA output current and 1 mA cathode current should be checked against the circuit's biasing and load conditions. Through-hole mounting and the TO-92-3 package affect board layout, while the -25°C to 85°C ambient rating defines the permissible operating environment. Because the output is adjustable, the external adjustment arrangement must be validated for the intended voltage between 2.5V and 36V. For procurement, confirm that the package style and ambient temperature range match the assembly and operating environment.