FAN2502S315X

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

The FAN2502S315X is a fixed-output 3.3V CMOS LDO regulator from the FAN2502/03 family, housed in a SOT-23-5 package. It delivers up to 150mA output current with an input voltage range of 2.7V to 6.5V. The device features ultra-low power consumption with a ground current of 25µA at full load and less than 1µA during shutdown. Pin 4 serves as a bypass pin for noise reduction. It includes thermal limiting protection that shuts down the output if the junction temperature exceeds 150°C.

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

• Utilizes CMOS technology for low dropout voltage and high efficiency in portable applications
• Features an enable/shutdown control pin to reduce supply current to under 1µA
• Includes onboard thermal protection circuitry to prevent damage during overload conditions
• Offers 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 the specific ordering suffix '315X' against official manufacturer documentation to confirm the exact output voltage and pin configuration. Ensure compatibility with the SOT-23-5 footprint and check for any lead-free or RoHS compliance requirements relevant to your assembly process. Confirm availability through authorized distributors.

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

Select this component for battery-powered designs requiring low quiescent current and compact packaging. Consider the 3.3V fixed output and 150mA capability when designing power rails for digital logic or RF sections. Evaluate the thermal resistance of the PCB layout to ensure the device remains within the 125°C junction temperature limit under maximum load conditions.

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

This part belongs to the FAN2502/03 family of micropower low-dropout voltage regulators manufactured by onsemi (formerly Fairchild Semiconductor). The family utilizes CMOS technology to provide cost-effective performance for portable devices. The FAN2502 variant specifically offers adjustable or bypass options at Pin 4, distinguishing it from the FAN2503 which provides an error flag.

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

The datasheet notes that the FAN2502/03 family is pin-compatible with many popular older BiCMOS designs. Verify pin assignments and electrical characteristics against legacy components before substitution.