Diodes Incorporated AP431ARG Product Overview

The AP431ARG from Diodes Incorporated is a precision adjustable shunt regulator with a specified thermal stability over applicable automotive, commercial, and military temperature ranges. This integrated circuit is designed to provide a cost-effective solution for applications requiring voltage calibration and a simple yet reliable reference voltage. It is commonly used in power supplies and can function as a replacement for zener diodes in many applications due to its lower output impedance and better stability.

The AP431ARG is capable of operating with a wide current range from 1.0 to 100mA with a typical dynamic impedance of 0.2 ohms. The output voltage can be set to any value between V<sub>REF (approximately 2.5 volts) and 36 volts with two external resistors. This feature provides a great deal of flexibility in the design of shunt regulator circuits and allows for fine-tuning of the voltage as required by the application.

Key features of the AP431ARG include:

• Adjustable output voltage from 2.5V to 36V
• Low dynamic output impedance: 0.2 ohms typical
• Sink current capability: 1.0mA to 100mA
• Fast turn-on response
• Low output noise
• Wide operating temperature range: -40°C to +125°C

This device is offered in a green molding compound and has a lead-free finish, making it compliant with RoHS requirements. The AP431ARG comes in a small outline transistor (SOT-23) package, which is ideal for space-constrained applications. Its small footprint and low profile make it suitable for high-density circuit boards and portable devices.

Applications for the AP431ARG span across various sectors, including power supplies, battery chargers, voltage regulators, and adjustable references in consumer electronics, automotive systems, and industrial equipment. Its high performance, combined with ease of use, makes it a popular choice among engineers and designers looking to implement a reliable voltage reference in their systems.

For detailed specifications and application circuits, refer to the AP431ARG datasheet provided by Diodes Incorporated.