FAN1581D25X

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

The FAN1581D25X is a linear voltage regulator IC providing a fixed positive output of 2.5V with a maximum current capacity of 5A. It operates within an input voltage range up to 7V and features a maximum dropout voltage of 1.18V at full load. The device incorporates over-current and over-temperature protection mechanisms, ensuring reliable operation across a temperature range of 0°C to 125°C. With a quiescent current of 6 mA and power supply rejection ratio of 80dB at 120Hz, it delivers stable regulation in surface-mount TO-252-5 packages.

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

• Provides fixed positive voltage regulation with high current output capability
• Integrates comprehensive protection against over-current and thermal overload conditions
• Delivers stable performance with low quiescent current consumption

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

• Power management systems requiring stable 2.5V rail generation
• Embedded electronics needing regulated low-dropout power sources
• Industrial equipment utilizing surface-mount linear regulation

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

Verify component authenticity through authorized onsemi channels due to obsolete status. Confirm package integrity and pin alignment for TO-252-5 compatibility. Validate datasheet revisions for accurate electrical characteristics. Ensure storage conditions maintain moisture sensitivity level 1 specifications. Cross-reference ordering suffixes to match exact functional requirements.

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

Evaluate input voltage headroom against the 7V maximum limit to prevent damage. Assess thermal dissipation capabilities within the TO-252-5 package constraints. Compare dropout voltage requirements against minimum operating loads. Consider protection feature integration to simplify system design. Verify temperature range compliance for intended operational environments.

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

This component belongs to the FAN1581 series of linear regulators designed for efficient power delivery. It represents a legacy solution from onsemi's portfolio, now marked as obsolete. The device serves as a foundational element for fixed-voltage applications requiring robust current handling and integrated safety features in compact surface-mount formats.

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

Public confirmed substitute part numbers are not available for this obsolete component. Evaluate alternative linear regulators with compatible 2.5V output and 5A current ratings. Verify pin-out compatibility for direct PCB replacement. Assess thermal and electrical parameter overlaps to ensure functional equivalence.