AZ431LARTR-G1

Overview

The AZ431LARTR-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 from 0.1mA to 100mA. The device features a typical reference voltage deviation of 3mV over temperature and a maximum temperature coefficient of 20PPM/°C. It offers an initial accuracy of 0.5% and maintains stability under capacitive loads. The component is housed in a SOT-89 package with tape and reel packaging, suitable for industrial temperatures ranging from -40°C to +125°C.

Feature Summary

• Provides wide programmable precise output voltage from 1.24V to 18V using two external resistors
• Ensures high stability under capacitive load conditions
• Features sharp turn-on characteristics and low dynamic output resistance
• Complies with RoHS standards and utilizes halogen-free green molding compound

Applications

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

Procurement Notes

Verify that the specific part number AZ431LARTR-G1 corresponds to the SOT-89 package variant with 0.5% tolerance and tape and reel packing. Confirm compliance requirements such as RoHS 3 and Green status match project specifications. Ensure the ordering suffix accurately reflects the desired voltage tolerance and packaging format before finalizing procurement orders.

Selection Notes

Select this component when a low-voltage adjustable reference with high thermal stability is required. The SOT-89 package provides distinct thermal and mechanical properties compared to SOT-23 or TO-92 options. Consider the 0.5% initial accuracy and 20PPM/°C temperature coefficient for applications demanding tight voltage regulation across wide operating temperature ranges.

Part Context

This device belongs to the AZ431L series of low-voltage adjustable precision shunt regulators. The series includes variants in TO-92, SOT-23, SOT-25, and SOT-89 packages. The AZ431LARTR-G1 specifically denotes the SOT-89 surface-mount package configuration with tape and reel delivery, designed for automated assembly processes.

Replacement Considerations

AZ431LANTR-E1

FAQ

What is the minimum cathode current required for regulation?

The minimum cathode current for regulation is typically 55µA and guaranteed up to 80µA.

How is the output voltage determined?

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