FAN1117ADX

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

The FAN1117ADX is a low dropout three-terminal linear regulator manufactured by Fairchild Semiconductor, now part of onsemi. It provides a fixed positive output voltage with a maximum output current capability of 1A. The device operates within an input voltage range from 2.5V to 17V and features a maximum dropout voltage of 1.2V at full load. It includes internal protection mechanisms for overcurrent and overtemperature conditions. The component is housed in a TO-252 (DPAK) surface-mount package and is rated for operation between 0°C and +125°C.

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

• Provides stable regulated output with high current drive capability
• Incorporates thermal overload and short-circuit protection circuits
• Designed for efficient power management in space-constrained applications

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

• Portable battery-powered equipment requiring efficient voltage regulation
• Embedded systems needing clean power supply rails
• Industrial control modules operating under varying load conditions

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

Verify the manufacturer origin as Fairchild Semiconductor or onsemi, noting corporate acquisitions. Confirm the package type is TO-252AA and the output voltage is fixed at the required level. Check for RoHS compliance status and ensure the datasheet matches the specific revision. Authentication through authorized distributors is recommended due to potential legacy stock variations.

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

Select this component when a fixed output voltage is required rather than adjustable variants like the ADX suffix might imply in other contexts, though this specific part is fixed. Ensure the input voltage remains above the minimum threshold of 2.5V. Verify that the thermal dissipation requirements fit the TO-252 package constraints for the expected load current and ambient temperature.

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

This regulator belongs to the FAN1117 series of low dropout linear regulators. The series includes various fixed voltage options such as 1.8V, 2.5V, 2.85V, 3.3V, and 5V. The FAN1117ADX specifically denotes a fixed output variant, distinct from adjustable versions. It shares core architecture with other members but differs in internal feedback network settings for precise voltage targeting.

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

Publicly confirmed substitute part numbers are not available in the provided documentation. Cross-reference with LD1117DTTR may be considered for functional similarity, but direct substitution requires independent verification of pinout and electrical characteristics against official datasheets.