AZ1084CD-ADJTRG1

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The AZ1084CD-ADJTRG1 is a positive adjustable low-dropout linear regulator from Diodes Incorporated, capable of delivering up to 5A output current. It features a maximum dropout voltage of 1.5V at full load and includes on-chip thermal limiting and current limiting for protection. The device operates within an input voltage range of up to 12V and supports an operating junction temperature range of 0°C to +125°C. It utilizes a TO252-2 package variant (3, 4, or 5 pin options) or TO252 Type CJ, with the output voltage set by two external resistors.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Adjustable output voltage configuration using two external resistors
• Integrated thermal limiting and current limiting protection circuits
• Compatible with low ESR ceramic capacitors
• Totally lead-free and fully RoHS compliant construction

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• High-efficiency linear regulators
• Battery chargers
• Post-regulation for switching supplies
• Microprocessor supplies
• Desktop PCs, RISC and embedded processors' supplies

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific pin assignment option required for the design, as the part supports multiple TO252-2 configurations including Option 1, Option 2, and Option 5, alongside the TO252 Type CJ package. Confirm that the application circuit utilizes appropriate external feedback resistors to establish the desired output voltage level. Ensure compliance with moisture sensitivity level 3 requirements during storage and handling processes.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when an adjustable positive voltage rail is needed with high current capability up to 5A. It is suitable for applications requiring low dropout performance under heavy loads. Consider the thermal resistance characteristics and ensure adequate heatsinking if power dissipation exceeds standard limits. Verify that the input voltage remains within the recommended operating conditions to maintain stable regulation.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This device belongs to the AZ1084C series of low-dropout linear regulators manufactured by Diodes Incorporated. The series includes fixed voltage versions such as 1.5V, 1.8V, 2.5V, 3.3V, and 5.0V, which integrate internal adjust resistors. The adjustable variant distinguishes itself by allowing external voltage setting, providing flexibility for custom power supply designs requiring specific voltage levels not covered by fixed outputs.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Direct substitutes within the same family include other AZ1084C variants with different output voltages or package types. For fixed voltage needs, consider AZ1084CD-1.5TRG1, AZ1084CD-1.8TRG1, AZ1084CD-2.5TRG1, AZ1084CD-3.3TRG1, or AZ1084CD-5.0TRG1. Ensure any replacement maintains compatibility with the existing PCB footprint and thermal management strategy.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators FAQ

How is the output voltage determined for the AZ1084CD-ADJTRG1?

The output voltage is set externally using two resistors connected to the ADJ pin, following the formula VOUT = VREF * (1 + R2/R1) + IADJ * R2.

What protection features are integrated into the AZ1084CD-ADJTRG1?

The device includes on-chip thermal limiting to protect against excessive junction temperatures and a current-limiting circuit to handle overload conditions.

Is the AZ1084CD-ADJTRG1 compatible with ceramic output capacitors?

Yes, the regulator is designed to be compatible with low ESR ceramic capacitors for output filtering.