FAN2502S27X

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

The FAN2502S27X is a fixed-output 150 mA CMOS LDO regulator from onsemi. It provides a stable 2.7 V output with a maximum dropout voltage of 180 mV at full load and a typical ground current of 25 µA. The device operates within an input voltage range of 2.7 V to 6.5 V and features thermal limiting protection that shuts down the output if the junction temperature exceeds 150°C. Pin 4 serves as a bypass pin for noise reduction, supporting optimal performance in sensitive applications.

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

• Utilizes CMOS technology for ultra-low power consumption and low shutdown current.
• Features extremely low dropout voltage characteristics under varying load conditions.
• Includes onboard thermal limiting protection against overload and overheating.
• Offers high loop stability compatible with a wide variety of external capacitors.

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 component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix '27' indicates the 2.7 V fixed output variant. Ensure the package matches the SOT-23-5 footprint requirements for your PCB layout. Check for RoHS compliance documentation if required by your manufacturing standards.

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

Select this component when a fixed 2.7 V rail is required for portable electronics. Consider the 150 mA output capability and low quiescent current for battery-operated devices. Evaluate the need for the bypass pin functionality to minimize output noise in RF-sensitive circuits. Ensure the input voltage remains above the minimum threshold to maintain regulation.

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

This part belongs to the FAN2502/03 family of micropower low-dropout regulators. The FAN2502 series distinguishes itself with an adjustable version (ADJ) and fixed versions utilizing a bypass pin for noise optimization. This specific model represents the fixed 2.7 V configuration within the broader portfolio designed for GSM and TDMA cellular handsets.

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

The datasheet notes pin compatibility with many popular older BiCMOS designs. Verify pin assignments match exactly before substitution. No specific cross-reference part numbers are provided in the official documentation.