FAN2519S25X

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

The FAN2519S25X is a fixed positive low-dropout (LDO) linear voltage regulator manufactured by Fairchild Semiconductor. It provides a fixed output voltage of 2.5 V with a maximum output current of 50 mA. The device utilizes CMOS technology and features a maximum dropout voltage of 0.075 V at full load. It operates within an input voltage range up to 6.5 V and supports a junction temperature range from -40 °C to +125 °C. The component is housed in a SOT-23-5 surface-mount package.

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

• CMOS technology for micropower operation
• Fixed positive output configuration
• Integrated over-temperature protection

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

• GSM mobile phones
• TDMA communication devices
• Portable battery-powered equipment

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

Verify the specific manufacturer origin, as this part was produced by both Fairchild Semiconductor and onsemi following corporate restructuring. Confirm the exact suffix designation matches the required output voltage and package variant. Check for RoHS compliance status relative to the production date, as older batches may differ. Ensure the source document explicitly identifies the component as the FAN2519S25X variant to avoid confusion with other fixed voltage outputs in the series.

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

Select this component when a stable 2.5 V rail is required for low-current digital or analog circuits. The SOT-23-5 package is suitable for space-constrained designs. Consider the 50 mA current limit against peak load demands. Verify that the input voltage remains within the 6.5 V maximum rating during all operating conditions. Evaluate thermal performance based on the power dissipation calculated from the voltage drop across the regulator.

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

This component belongs to the FAN2519 family of micropower LDO regulators designed for cost-effective performance in portable applications. The family shares similar architectural features but varies in fixed output voltage options. The S25X suffix specifically denotes the 2.5 V output version packaged in tape and reel format for automated assembly processes.

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

Publicly confirmed substitute part numbers are not available in the provided documentation.