FAN2504S28X

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

The FAN2504S28X is a fixed-output linear voltage regulator from the FAN2504/05 family, manufactured by onsemi (formerly Fairchild Semiconductor). It provides a fixed 2.8V output with a maximum continuous current of 200mA. The device supports an input voltage range up to 6.5V and features a typical dropout voltage of 0.2V at full load. Key electrical characteristics include a quiescent current of 75µA and a power supply rejection ratio (PSRR) of 43dB at 120Hz. It operates within a temperature range of -40°C to +125°C and includes thermal overload protection.

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

• Utilizes CMOS technology for micropower operation and cost-effective performance in portable applications.
• Provides stable regulation with low dropout voltage capability under varying load conditions.
• Includes internal thermal overload protection to safeguard the device during fault conditions.

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

• GSM cellular handsets
• TDMA cellular handsets
• Laptop computers
• Notebook portable computers

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

Verify component authenticity through authorized distribution channels or direct manufacturer engagement. Confirm that the specific suffix 'S28X' corresponds to the required 2.8V fixed output variant and SOT-23-5 packaging. Review the official datasheet for any recent product change notices (PCN) regarding mold compound or pinout modifications. Ensure compliance with RoHS directives if applicable to your assembly process. Cross-reference part numbers carefully as legacy Fairchild inventory may be managed under onsemi branding.

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

Select this component when a fixed 2.8V rail is required with up to 200mA load capacity. Consider the 6.5V maximum input rating for compatibility with single-cell lithium battery systems or higher voltage rails. Evaluate the 75µA quiescent current against system standby power budgets. The SOT-23-5 package is suitable for space-constrained PCB layouts. Verify that the thermal performance meets the requirements for the intended operating environment and enclosure design.

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

This device belongs to the FAN2504/05 series of low-dropout regulators designed for portable electronics. The series leverages CMOS architecture to achieve low power consumption while maintaining regulation accuracy. It serves as a power management solution for battery-operated devices requiring efficient voltage conversion from higher source voltages to lower logic or analog supply levels.

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

Check for direct cross-references within the FAN2504/05 family for different output voltages or current ratings. Verify equivalent LDOs from other manufacturers offering similar 200mA output and 2.8V fixed voltage in SOT-23-5 packages. Ensure pinout compatibility before substitution to avoid circuit redesign.