AZ1085S-2.5TRE1

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

The AZ1085S-2.5TRE1 is a fixed positive low dropout linear regulator manufactured by Diodes Incorporated, delivering a nominal output voltage of 2.5V with a maximum load current of 3A. It operates within an input voltage range up to 12V and features a typical dropout voltage of 1.3V at full load. The device incorporates on-chip thermal shutdown and current limiting circuits for protection. It utilizes a TO-263-3 (D2PAK) surface-mount package and is supplied in tape and reel format.

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

• Integrated bandgap reference and internal adjust resistors for fixed output configuration
• Built-in thermal shutdown and current limiting circuitry for overload protection
• Low dropout performance with typical 1.3V drop at 3A load current

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

• Post regulation for switching supplies
• Microprocessor power supply rails
• Battery charger circuits
• Motherboard power distribution modules

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

Verify the specific ordering suffix TRE1 confirms the tape and reel packaging format required for automated assembly processes. Confirm that the S designation corresponds to the TO-263-3 package variant. Ensure compliance requirements match the E1 lead-free designation if applicable to the specific procurement batch.

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

Select this component when a stable 2.5V rail is required for loads up to 3A. The TO-263-3 package provides adequate thermal dissipation for moderate power applications without requiring extensive heatsinking compared to smaller packages. Verify input voltage headroom exceeds the 1.5V maximum dropout specification under all operating conditions.

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

This part belongs to the AZ1085 series of 3A low dropout regulators produced by BCD Semiconductor Manufacturing Limited, now marketed under Diodes Incorporated. The series includes adjustable and multiple fixed voltage options available in various standard packages including TO-220-3, TO-263-2, and TO-252-2 variants.

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

AZ1085S-2.5E1

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

What is the function of the ADJ pin on the AZ1085S-2.5TRE1?

For the fixed 2.5V version, the internal adjust resistors are connected between the ADJ pin and the Output pin. The ADJ pin should be left unconnected or handled according to the datasheet functional block diagram for fixed configurations.

How does the device handle over-temperature conditions?

The regulator features on-chip thermal shutdown protection. If the junction temperature exceeds safe limits due to excessive power dissipation or ambient heat, the device shuts down to prevent damage.