FAN1587AD15X

Special Purpose Regulators Overview

The FAN1587AD15X is a fixed positive Low Dropout (LDO) linear voltage regulator manufactured by Fairchild Semiconductor. It provides a fixed output voltage of 1.5 V with a maximum continuous output current capability of 3 A. The device features a maximum input voltage rating of 18 V and supports operation over an extended temperature range from 0°C to +125°C. Key electrical parameters include a maximum dropout voltage of 1.3 V at full load, a line regulation of 0.2 %/V, and a load regulation of 0.5 %. The unit is housed in a DPAK surface-mount package.

Special Purpose Regulators Feature Summary

• Provides a stable fixed 1.5 V output for digital logic power rails
• Capable of delivering up to 3 A continuous load current
• Includes internal protection against overcurrent and thermal overload conditions

Special Purpose Regulators Applications

• Power supply circuits for Intel processor core voltage regulation
• General purpose low noise power distribution in embedded systems
• Biasing stages requiring stable low dropout performance

Special Purpose Regulators Procurement Notes

Verify the specific manufacturer source, as this component was originally developed by Fairchild Semiconductor and may now be distributed under onsemi branding following corporate acquisitions. Confirm that the datasheet specifications align with the required system constraints before integration. Ensure compliance with RoHS directives if applicable to the target market. Check for any obsolescence notices or lifecycle changes associated with the original Fairchild part number.

Special Purpose Regulators Selection Notes

Select this component when a fixed 1.5 V rail is required with high current capacity in a compact surface-mount form factor. The DPAK package offers a balance between thermal dissipation and board space efficiency. Consider the 1.3 V dropout characteristic to ensure adequate headroom between the input supply and the regulated output under maximum load conditions.

Special Purpose Regulators Part Context

This regulator belongs to the FAN1587 series, which includes variants offering different fixed output voltages such as 1.8 V, 2.5 V, and 3.3 V. All members of this family share similar pinouts and functional characteristics, differing primarily in their internal feedback resistor networks that set the output voltage level.

Special Purpose Regulators Replacement Considerations

FAN1587AT15X