FAN2509S30X

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

The FAN2509S30X is a low-dropout linear voltage regulator manufactured by Fairchild Semiconductor, now part of onsemi. It provides a fixed output voltage of 3 V with a maximum output current capability of 50 mA. The device operates within an input voltage range from 2.7 V to 6.5 V and features a typical dropout voltage of 2.5 mV at light loads, with a maximum specified dropout of 140 mV. It includes internal protection mechanisms such as thermal shutdown and maintains a load regulation of 2% and line regulation of 0.3 %/V. The component is housed in a SOT-23-5 surface-mount package and supports operation across an extended temperature range from -40 C to +125 C.

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

• CMOS technology implementation for micropower efficiency
• Fixed 3 V output voltage configuration
• Integrated thermal shutdown protection
• Compact SOT-23-5 surface mount packaging

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

• GSM cellular handsets
• TDMA cellular handsets
• Laptop portable computers
• Notebook portable computers
• Other portable electronic devices

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

Verify component authenticity through authorized distribution channels due to the discontinued status of this specific part number. Confirm RoHS compliance requirements against project specifications, as historical records indicate non-compliance for certain variants. Validate that the SOT-23-5 footprint matches existing PCB designs before procurement planning. Ensure supply chain sources provide valid traceability documentation given the end-of-life lifecycle stage.

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

Select this regulator for applications requiring a stable 3 V rail with limited current demands up to 50 mA. The CMOS architecture offers cost-effective performance suitable for battery-powered systems. Consider the 2.7 V minimum input requirement when designing power rails. Evaluate the thermal management needs based on the maximum junction temperature rating of 125 C. This component serves as a direct replacement for legacy Fairchild designs in portable consumer electronics.

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

This component belongs to the FAN2508/09 family of micropower low-dropout voltage regulators. These devices utilize CMOS technology to deliver economic performance for portable applications. The series is characterized by low quiescent current and fast transient response capabilities. Fairchild Semiconductor developed this line before its acquisition by onsemi, which continues to support the product lineage under the new brand identity while maintaining original technical specifications.

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

Public confirmed substitute part numbers are not available in the provided source material.