FAN1581DX

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

The FAN1581DX is an ultra-low dropout linear regulator from the Fairchild Semiconductor FAN1581 series, housed in a TO-252-5 (DPAK) surface-mount package. It provides a fixed positive output voltage of 2.5V with a maximum continuous output current capability of 5A. The device operates within an input voltage range of 1.75V to 6.5V and features a typical dropout voltage of 0.4V at full load. Designed for low-voltage applications, it includes on-chip thermal limiting protection and maintains high efficiency in power-sensitive environments.

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

• Ultra-low dropout performance optimized for minimal voltage loss under heavy loads
• Integrated thermal limiting circuitry for enhanced operational safety
• Fast transient response suitable for dynamic processor power demands

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

• GTL+ bus VTT termination supplies
• Low voltage logic IC operation
• Embedded processor power regulation

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

Verify component authenticity through official manufacturer channels or authorized distributors. Confirm the specific suffix 'DX' corresponds to the TO-252-5 package and 2.5V fixed output variant. Check for RoHS compliance status and ensure storage conditions adhere to moisture sensitivity level requirements prior to assembly.

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

Select this component when a stable 2.5V rail is required with up to 5A current capacity. Ensure the input supply remains above the minimum threshold while accounting for dropout voltage variations. Consider thermal dissipation capabilities relative to the PCB layout and ambient operating temperature constraints.

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

This part belongs to the FAN1581 family of ultra-low dropout regulators designed for low-voltage microprocessor applications. It complements adjustable variants like the FAN1581MX and other fixed voltage options such as the FAN1581-1.2 and FAN1581-1.5, offering a dedicated solution for standard logic families requiring precise voltage regulation.

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

Direct substitutes include the FAN1581-2.5X and FAN1581D25X, which share identical electrical specifications and pinouts. Verify package compatibility and thermal characteristics before integration.