AP2318M-ADJTRG1

Overview

The AP2318M-ADJTRG1 is an adjustable ultra-low dropout (ULDO) linear regulator from Diodes Incorporated, designed for low voltage applications requiring fast transient response. It delivers a maximum output current of 1.5 A with a typical dropout voltage of 0.5 V at full load. The device operates within an input voltage range of 2.5 V to 12 V and maintains output voltage accuracy within ±1.5%. Key electrical parameters include a reference voltage of 1.25 V, quiescent current of 250 µA, and thermal shutdown protection activating at +150 °C.

Feature Summary

• Adjustable output voltage configuration using external resistors
• Integrated on-chip thermal shutdown for overload protection
• High ESD tolerance ratings for robust operation

Applications

• Notebook computers
• USB devices
• Add-on cards
• DVD players
• PC motherboards

Procurement Notes

Verify component authenticity through authorized channels as the datasheet indicates this series is not recommended for new designs. Confirm package type and RoHS compliance status prior to procurement. Ensure supply chain sources are verified against manufacturer lists to avoid counterfeit components.

Selection Notes

Select this component for systems requiring high current capability in compact footprints. Evaluate thermal dissipation requirements based on the junction-to-ambient resistance values provided in the datasheet. Verify that the input voltage range aligns with system power rails and that transient response meets load step specifications.

Part Context

This part belongs to the AP2318A series of ULDO regulators optimized for critical low voltage environments. The series includes both fixed and adjustable variants available in DFN-3x3-8 and PSOP-8 packages. It is engineered to provide stable regulation under varying load conditions while minimizing power loss.

Replacement Considerations

Public confirmed substitute part numbers: None identified.