FAN2508S28X

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

The FAN2508S28X is a fixed-output linear regulator providing 2.8V at up to 50mA in an SOT-23-5 package. It features ultra-low power consumption with 25µA ground current and less than 1µA shutdown current. The device includes thermal limiting protection, an enable/shutdown control pin, and a bypass pin for noise reduction. Input voltage ranges from 2.7V to 6.5V, with a maximum dropout voltage of 75mV at full load.

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

• Ultra-low power consumption with minimal ground current
• Integrated thermal limiting protection against overload
• Enable/Shutdown control for power conservation
• Bypass pin for enhanced noise performance

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

• Cellular phones and accessories
• Portable cameras and video recorders
• Laptop, notebook and palmtop computers

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

Verify the specific suffix 'S28X' confirms the 2.8V fixed output and Bypass pin configuration. Confirm the manufacturer origin as Fairchild Semiconductor or ON Semiconductor. Ensure the component matches the SOT-23-5 surface-mount package dimensions. Check for RoHS compliance status if required by your manufacturing standards.

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

Select this component when a stable 2.8V rail is needed for low-current portable applications. It is suitable for designs requiring low quiescent current to extend battery life. The wide capacitor tolerance simplifies bill of materials selection. Consider the thermal resistance characteristics of the PCB layout for high ambient temperatures.

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

This part belongs to the FAN2508/FAN2509 family of micropower LDO regulators. The FAN2508 series distinguishes itself with a Bypass pin on Pin 4 for noise-sensitive fixed-voltage applications. It utilizes CMOS technology for cost-effective performance in compact devices compared to older BiCMOS designs.

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

Pin-compatible alternatives within the FAN2508 family include other fixed voltage variants such as FAN2508S25X (2.5V) or FAN2508S33X (3.3V). Adjustable versions like FAN2508SX share the same package but require external resistors.