AS431HANTR-G1

Overview

The AS431HANTR-G1 is a three-terminal adjustable precision shunt regulator manufactured by Diodes Incorporated. It operates within an ambient temperature range of -40°C to +125°C and features a reference voltage (VREF) of 2.495V with a 0.5% initial accuracy tolerance. The device supports programmable output voltages from 2.495V up to 36V, utilizing a sink current capacity ranging from 0.5mA to 100mA. It is housed in a SOT-23 package and includes a typical low equivalent full-range temperature coefficient of 20PPM/°C.

Feature Summary

• Guaranteed thermal stability over the full operating temperature range
• Sharp turn-on characteristics for reliable switching performance
• High stability under capacitive load conditions
• Low output noise and low dynamic impedance

Applications

• Switching power supplies
• Chargers
• Voltage adapters
• Graphic cards
• Precision voltage references

Procurement Notes

Verify that the specific part number matches the required pin-out configuration, as the AS431H series offers both normal and mirror pin-outs. Confirm the voltage tolerance grade corresponds to design requirements, as 0.5% and 1.0% options exist. Ensure the ordering suffix indicates the correct packaging format, specifically Tape & Reel for this variant. Cross-reference the RoHS compliance status if environmental regulations apply to the final assembly.

Selection Notes

Select the AS431HANTR-G1 when a precise, adjustable shunt regulator is needed for space-constrained designs due to its compact SOT-23 footprint. Consider this component for applications requiring high stability under varying capacitive loads or where low temperature deviation is critical. Verify that the cathode current requirements fall within the specified 0.5mA to 100mA operational window for optimal regulation performance.

Part Context

This component belongs to the AS431H family of adjustable precision shunt regulators designed to replace Zener diodes in various electronic circuits. The 'N' suffix denotes the SOT-23 package, while 'A' specifies the 0.5% voltage tolerance grade. The 'TR' suffix confirms the Tape & Reel packaging format intended for automated surface-mount assembly processes.

Replacement Considerations

AS431HBNTR-G1

FAQ

What is the minimum cathode current required for regulation?

The minimum cathode current for regulation is typically 0.35mA, with a maximum specification of 0.5mA.

Does the AS431HANTR-G1 support operation with large capacitive loads?

Yes, the device features high stability under capacitive load conditions, ensuring reliable performance without oscillation.