FAN2500S28X

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

The FAN2500S28X is a fixed-output low-dropout linear voltage regulator manufactured by Fairchild Semiconductor, now part of onsemi. It provides a stable 2.8 V output with a maximum continuous current capability of 100 mA. The device operates within an input voltage range of 2.7 V to 6.5 V and utilizes CMOS technology for micropower efficiency. It features a typical dropout voltage of 2.5 mV at rated load and maintains a line regulation of 0.3 %/V. The unit is housed in a five-lead SOT-23 surface-mount package and supports an operating temperature range from -40°C to +125°C.

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

• CMOS-based micropower architecture designed for cost-effective performance in portable applications
• Ultra-low dropout characteristic enabling efficient operation near the input voltage limit
• Integrated thermal protection safeguards against overheating during fault conditions

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

• GSM cellular handsets
• TDMA mobile communication devices
• Laptop and notebook portable computers

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

Verify component authenticity through authorized distribution channels due to discontinued status. Confirm datasheet revisions and RoHS compliance documentation prior to integration. Validate pin compatibility with existing PCB footprints as legacy components may exhibit variations in marking or packaging specifications across different manufacturing lots.

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

Select this regulator for designs requiring a precise 2.8 V rail with moderate current demands under 100 mA. Ensure the input supply remains above 2.7 V to maintain regulation. Consider the SOT-23-5 footprint constraints and thermal dissipation requirements when placing the component on the board layout for optimal heat transfer.

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

This component belongs to the FAN2500 series of low-dropout regulators, which includes variants with different output voltages and current ratings. The series targets battery-powered systems where power conservation and small form factors are critical. It shares architectural similarities with the FAN2501 and FAN2503 families but offers specific electrical characteristics tailored for 100 mA applications.

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

Direct substitutes include other FAN2500 series parts with identical 2.8 V outputs, such as FAN2500S28X_NL. Cross-reference with FAN2503S28X if higher current capacity is acceptable, noting the difference in output specifications.