FAN2519S33X

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

The FAN2519S33X is a low-dropout (LDO) voltage regulator manufactured by Fairchild Semiconductor, now part of onsemi. It provides a fixed 3.3 V output with a maximum continuous current capability of 50 mA. The device utilizes CMOS technology and features a fast start-up time to minimize delay during power-on sequences. It operates within an input voltage range supporting the 3.3 V output and maintains regulation across an extended industrial temperature range from -40°C to +125°C. The component is housed in a compact SOT-23-5 surface-mount package, suitable for space-constrained portable applications.

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

• CMOS architecture designed for low quiescent current consumption
• Fast start-up functionality reduces power-on latency
• Low dropout voltage ensures efficient operation near input limits
• Integrated thermal protection safeguards against overheating

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

• Portable battery-powered consumer electronics
• Wireless communication modules requiring stable 3.3 V rails
• Microcontroller power supply sections
• Embedded systems with strict size constraints

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

Verify the specific suffix 'X' indicates tape-and-reel packaging configuration as per manufacturer standards. Confirm end-of-life status with the supplier, as this component series may be discontinued or superseded by newer revisions. Ensure compatibility with existing PCB footprints for the SOT-23-5 package before finalizing procurement plans.

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

Select this regulator when a fixed 3.3 V output at 50 mA is required with minimal board space. Consider the fast start-up feature if system power sequencing demands rapid voltage ramp-up. Evaluate input voltage headroom against the specified dropout characteristics to ensure stable regulation under varying load conditions.

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

This component belongs to the FAN2519 family of low-power LDO regulators. The family shares common architectural traits such as CMOS design and small form factors. Variants within the series typically differ by output voltage settings and specific package options, catering to diverse voltage rail requirements in portable devices.

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

Consult official cross-reference guides for direct pin-compatible alternatives. Verify that any substitute matches the 50 mA output current, 3.3 V fixed output, and SOT-23-5 package dimensions. Ensure thermal and electrical specifications align with original design constraints.