FAN1117ASX

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

The FAN1117ASX is a low-dropout (LDO) linear voltage regulator manufactured by onsemi, formerly Fairchild Semiconductor. It provides an adjustable output voltage with a maximum continuous output current of 1 A. The device features a dropout voltage of up to 1.2 V at full load and operates within an input voltage range that supports its regulation capabilities. It has a quiescent current of 13 mA and functions reliably across a junction temperature range from 0 °C to +125 °C. The component is housed in a SOT-223-3 surface-mount package.

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

• Adjustable output voltage capability for flexible design integration
• High current delivery of 1 A with low dropout characteristics
• Robust thermal performance supporting operation up to +125 °C

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

• Portable battery-powered equipment requiring efficient voltage regulation
• Communication systems needing stable low-noise power supplies
• Consumer electronics utilizing surface-mount assembly processes

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

Verify the manufacturer status carefully as this part may be discontinued or superseded by newer equivalents. Confirm the exact suffix designation matches your bill of materials, as variations exist within the FAN1117 family. Check for RoHS compliance documentation specific to the production batch. Ensure the SOT-223-3 footprint aligns with your PCB layout constraints before finalizing procurement decisions.

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

Select this component when an adjustable output voltage is required alongside high current capacity in a compact form factor. Consider the 1.2 V dropout voltage when designing for minimum input-output differential scenarios. Evaluate the 13 mA quiescent current impact on overall system efficiency, particularly in battery-operated applications where standby power consumption is critical.

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

The FAN1117 series belongs to a family of low-dropout regulators designed for general-purpose linear regulation. Originally developed by Fairchild Semiconductor, the product line was integrated into onsemi's portfolio following corporate acquisitions. This specific model represents the adjustable variant in the SOT-223-3 package, distinguishing it from fixed-voltage versions like the FAN1117AD25X which provide set output levels.

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

Publicly confirmed substitute part numbers are not available in the provided source material. Designers should consult official obsolescence notices or contact the manufacturer directly for qualified replacement recommendations.