AZ431LANTR-G1

Overview

The AZ431LANTR-G1 is a low-voltage adjustable precision shunt regulator from the AZ431L series by Diodes Incorporated. It operates within a cathode voltage range of VREF to 18V and supports a continuous sink current between 0.1mA and 100mA. The device features a nominal reference voltage of 1.24V with an initial accuracy of ±0.5%. It exhibits a typical temperature coefficient of 20PPM/°C and a dynamic output resistance of 0.05Ω. The component functions reliably across an ambient temperature range of -40°C to +125°C.

Feature Summary

• Provides wide programmable precise output voltage ranging from 1.24V to 18V using two external resistors.
• Ensures high stability under capacitive load conditions for reliable regulation.
• Features sharp turn-on characteristics, low temperature deviation, and low output impedance.
• Complies with RoHS standards and utilizes lead-free green molding compound.

Applications

• Graphic cards
• PC motherboards
• Voltage adapters
• Switching power supplies
• Chargers

Procurement Notes

Verify that the ordering suffix G1 confirms compliance with RoHS directives and indicates the use of a lead-free green molding compound. Confirm the package type matches SOT-23 and check if the specific batch requires adherence to moisture sensitivity level 3 handling procedures during storage and assembly.

Selection Notes

Select this component when a low-cost, three-terminal adjustable shunt regulator is required as a Zener diode substitute. Ensure the application demands a reference voltage setting capability between 1.24V and 18V. Verify that the operating environment falls within the specified -40°C to +125°C temperature range and that the required sink current does not exceed 100mA.

Part Context

This part belongs to the AZ431L series of low-voltage adjustable precision shunt regulators. The series is designed to offer thermal stability over a full operation range with guaranteed performance. It serves as a direct replacement for standard Zener diodes in various power management and reference circuit applications.

Replacement Considerations

AZ431LANTR-E1 is listed as an alternative carrier for the same electrical specifications.

FAQ

What is the minimum cathode current required for regulation?

The minimum cathode current for regulation is typically 55µA and up to 80µA depending on conditions.

How is the output voltage adjusted?

The output voltage can be set to any value between 1.24V and 18V using two external resistors connected to the reference pin.