FAN2500S28X

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

The FAN2500S28X is a fixed-output low-dropout linear regulator from the FAN2500/01 family, manufactured by onsemi. It provides a regulated output voltage of 2.8V with a maximum continuous output current of 100 mA. The device operates within an input voltage range of 2.7 V to 6.5 V and features a dropout voltage of 140 mV at full load. It utilizes CMOS technology for ultra-low power consumption, drawing only 25 µA ground current under typical conditions. The component includes thermal limiting protection and an enable/shutdown control pin that reduces supply current to less than 1 µA when disabled.

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

• Utilizes CMOS technology to achieve ultra-low power consumption and minimal ground current during operation.
• Features extremely low dropout voltage characteristics suitable for battery-powered portable devices.
• Includes onboard thermal limiting protection to prevent damage during overload or overheating conditions.
• Provides user-controllable shutdown functionality via the Enable pin to conserve power.

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 '28X' confirms the 2.8V fixed output voltage and Bypass pin configuration. Confirm the package type matches SOT-23-5 requirements for your PCB layout. Check RoHS compliance status as indicated in official documentation. Ensure the source document corresponds to the correct revision for accurate electrical parameters.

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

Select this component when a stable 2.8V rail is required for sensitive analog or digital circuits in space-constrained designs. The wide capacitor tolerance allows flexibility in external component selection. Consider the thermal resistance characteristics of the SOT-23-5 package relative to your expected power dissipation and ambient temperature conditions.

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

This part belongs to the FAN2500/01 family of micropower LDO regulators designed for cost-effective performance in GSM and TDMA cellular handsets and portable computers. The FAN2500 variant distinguishes itself through Pin 4 functionality, offering either Adjustable voltage setting or Bypass capabilities depending on the suffix, unlike the FAN2501 which provides an Error flag.

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

The datasheet notes the device is pin-compatible with many popular older BiCMOS designs. Verify compatibility with existing circuit layouts if substituting legacy components. No specific substitute part numbers are listed in the provided documentation.