FAN1117AS33X

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

The FAN1117AS33X is a fixed-output low dropout linear voltage regulator manufactured by onsemi. It provides a stable 3.3 V output with a maximum current capacity of 1 A. The device operates within an input voltage range of 2.5 V to 17 V and features a maximum dropout voltage of 1.2 V at full load. Key electrical parameters include a quiescent current of 13 mA, line regulation of 0.2 %/V, and load regulation of 0.5 %. It is housed in a TO-252-3 surface-mount package and supports operation temperatures from 0 °C to +125 °C.

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

• Provides regulated positive voltage output via a single channel
• Utilizes NPN pass transistor architecture for high efficiency
• Incorporates internal thermal overload and current limit protection mechanisms

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

• Portable battery-powered equipment requiring efficient power management
• Post-regulation stages for switching mode power supplies (SMPS)
• General-purpose embedded systems requiring stable 3.3 V logic rails

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

Verify component authenticity through authorized distribution channels due to the prevalence of counterfeits in the passive component market. Confirm that the specific suffix matches the required package and temperature grade. Review the official datasheet for handling precautions related to electrostatic discharge sensitivity during assembly processes.

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

Select this component when a fixed 3.3 V rail is required with up to 1 A load capability. Ensure the input voltage remains within the specified 2.5 V to 17 V range to maintain regulation. Consider the thermal dissipation requirements of the TO-252-3 package under maximum load conditions to prevent thermal shutdown.

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

This part belongs to the FAN1117 series of low dropout regulators designed for cost-sensitive applications. It shares architectural similarities with other industry-standard LDOs but offers specific performance characteristics tailored for general consumer electronics. The series includes various fixed voltage options and adjustable variants to support diverse design requirements.

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

Direct pin-compatible substitutes may include the NCP1117DT33T5G or LD1117S33T3G. Verify that alternative components meet the same 1 A current rating and 3.3 V output specification. Check for differences in dropout voltage and thermal resistance to ensure compatibility with existing board layouts.