FAN1616AD18X

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

The FAN1616AD18X is a fixed positive Low Dropout (LDO) linear regulator manufactured by onsemi, formerly Fairchild Semiconductor. It provides a fixed 1.8V output voltage with a maximum output current of 0.5A. The device features a typical dropout voltage of 1V and a maximum of 1.2V at full load. Key electrical parameters include a line regulation of 0.022%/V and load regulation of 0.5%. It operates within an input voltage range of 1.5V to 5.75V differential. The component is housed in a SOT-223 package with four pins and is specified for operation across a temperature range of -40°C to +125°C.

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

• Fixed 1.8V output configuration optimized for specific logic levels
• Low dropout voltage characteristics ensure high efficiency during voltage conversion
• Integrated thermal protection and current limiting for robust operation

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

• USB hub power supply circuits
• Motherboard voltage regulation
• SDRAM module power delivery
• General purpose low noise linear regulation

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

Verify the suffix 'D18X' confirms the fixed 1.8V output variant rather than the adjustable version. Ensure the manufacturer source is recognized as onsemi following the acquisition of Fairchild Semiconductor components. Confirm the SOT-223 package type matches the design requirements for thermal dissipation and board space constraints.

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

Select this part when a stable 1.8V rail is required from higher voltage sources such as 3.3V or 5V systems. The fixed output eliminates external resistor networks needed for adjustable regulators. Consider the 0.5A current limit and thermal resistance of the SOT-223 package for heat management in enclosed environments.

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

This component belongs to the FAN1616 series of USB control power regulators designed for motherboard and peripheral applications. The series includes both fixed voltage variants (e.g., 5V, 3.3V) and adjustable versions. The FAN1616AD18X specifically addresses the need for efficient 1.8V generation in digital logic and memory interfaces.

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

Direct substitutes include other FAN1616 series parts with matching output voltages and packages, such as the FAN1616A50X for 5V applications. Cross-reference with onsemi's current product portfolio to ensure availability of equivalent LDO regulators with similar pinouts and thermal characteristics.