FAN1117AD5X

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

The FAN1117AD5X is a fixed positive linear voltage regulator manufactured by Fairchild Semiconductor, now part of onsemi. It provides a fixed output voltage of 5V with a maximum continuous output current of 1A. The device operates within an input voltage range of 2.5V to 17V and features a maximum dropout voltage of 1.2V at full load. Quiescent current is specified at 13mA. It is housed in a surface-mount TO-252 (DPAK) package with three pins.

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

• Fixed 5V output regulation for stable power supply applications
• High current capability supporting up to 1A load
• Low dropout performance ensuring efficiency under varying input conditions
• Surface-mount DPAK packaging for compact board integration

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

• Battery-powered systems requiring regulated 5V rails
• General-purpose power management in consumer electronics
• Embedded systems needing stable logic supply voltages

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

Verify manufacturer lineage as Fairchild Semiconductor assets were acquired by onsemi. Confirm the specific suffix 'X' indicates reel packaging if required by assembly processes. Ensure RoHS compliance documentation matches the production era. Cross-reference pinout compatibility with existing PCB footprints before procurement.

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

Select this component when a fixed 5V output is required with up to 1A capacity. It is suitable for applications where input voltage exceeds 2.5V but does not exceed 17V. Consider thermal dissipation capabilities given the TO-252 package size. Compare quiescent current requirements against other LDO options if battery life is critical.

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

This component belongs to the FAN1117 series of low-dropout linear regulators. The series includes adjustable and fixed voltage variants. The AD5X designation specifically denotes the 5V fixed output version. These regulators are commonly used in portable devices and industrial control systems where noise immunity and simplicity are prioritized over switching regulator efficiency.

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

Direct substitutes include FAN1117AD33X (3.3V), FAN1117AD18X (1.8V), and FAN1117AD25X (2.5V) from the same family. Other compatible parts may include RC1117D5T or FAN1086D5X, though electrical characteristics and pinouts should be verified against official datasheets.