FAN1582D25X

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

The FAN1582D25X is a fixed-output positive linear voltage regulator manufactured by onsemi, formerly Fairchild Semiconductor. It provides a fixed 2.5V output with a maximum continuous current of 3A. The device features a low dropout voltage of 1.18V at full load and supports an input voltage range up to 7V. Key electrical specifications include a quiescent current of 6mA and a power supply rejection ratio (PSRR) of 80dB at 120Hz. It is housed in a TO-252(DPAK) surface-mount package with five leads and includes built-in overcurrent and overtemperature protection.

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

• Fixed 2.5V output configuration for stable voltage regulation
• High current capability supporting up to 3A continuous load
• Integrated thermal and current protection mechanisms
• Low noise performance with high PSRR

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

• Power management in portable electronic devices
• Voltage regulation for embedded systems requiring stable 2.5V rails
• Interface circuitry powering in consumer electronics
• General-purpose linear regulation in industrial equipment

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

Verify component authenticity through authorized distributors due to the manufacturer's acquisition history. Confirm that the specific suffix corresponds to the fixed 2.5V variant rather than adjustable versions within the same family. Check for RoHS compliance status and ensure the TO-252 package matches the target PCB footprint requirements before finalizing procurement orders.

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

Select this component when a fixed 2.5V rail is required with moderate current demands up to 3A. Consider the 1.18V dropout voltage to ensure sufficient input-to-output differential under all operating conditions. Evaluate thermal dissipation capabilities in the TO-252 package against expected power losses. Compare against other LDOs if lower quiescent current or different output voltages are needed.

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

This part belongs to the FAN1582 series of low-dropout linear regulators originally developed by Fairchild Semiconductor. Following the merger with onsemi, these components are now marketed under the onsemi brand while retaining the original Fairchild part numbering. The series offers various output voltages and packages, with the D25X suffix specifically denoting the fixed 2.5V version in the TO-252 package.

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

Direct pin-compatible replacements may include other 3A LDOs in TO-252 packages with similar 2.5V outputs. Verify equivalent dropout characteristics and protection features. Cross-reference with onsemi's current portfolio for updated revisions. Ensure any substitute maintains the same thermal performance and regulatory compliance standards.