FAN1616AS18X

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

The FAN1616AS18X is a fixed positive low dropout (LDO) linear regulator manufactured by Fairchild Semiconductor. It provides a stable 1.8V output voltage with a maximum dropout voltage of 1.2V at full load. The device supports an output current of 0.5A and utilizes a SOT-223 plastic package with four pins. Designed for high efficiency, it features low quiescent current and excellent line and load regulation characteristics suitable for dynamic load applications.

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

• Fixed 1.8V output voltage configuration
• Low dropout voltage operation for high efficiency
• Integrated thermal protection circuitry
• Capable of delivering up to 0.5A output current

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

• USB control power supplies
• Motherboard voltage regulation
• Efficient linear voltage conversion from higher rails
• Battery-powered portable devices

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

Verify the specific ordering suffix against official Fairchild or ON Semiconductor documentation to confirm the exact output voltage and package variant. Ensure compatibility with lead-free manufacturing standards if required by the assembly process. Cross-reference part numbers carefully as underscore characters may have been replaced with dashes in newer systems.

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

Select this component when a fixed 1.8V supply is required with moderate current demands up to 0.5A. Consider the 1.2V maximum dropout voltage to ensure sufficient input-output differential under all operating conditions. Evaluate thermal performance based on the SOT-223 package's heat dissipation capabilities relative to the expected ambient temperature and load profile.

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

This regulator belongs to the FAN1616 series designed for USB and motherboard applications. The series includes adjustable and various fixed voltage versions. The AS18X variant specifically targets 1.8V generation, often used in legacy systems or specific logic levels requiring this precise rail without external feedback resistors.

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

Equivalent parts include the FAN1616AS18 and FAN1616AS18NL. Verify pinout compatibility and electrical specifications before substitution. Note that Fairchild products are now managed under ON Semiconductor nomenclature.