FAN2502SX

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

The FAN2502SX is a micropower low-dropout (LDO) linear voltage regulator from the FAN2502/03 family, manufactured by Fairchild Semiconductor. It utilizes CMOS technology to provide cost-effective performance for portable applications. The device features a fixed positive output voltage of 2.5V and supports a maximum load current of 150mA. It operates within an input voltage range extending up to 6.5V and maintains operation across a temperature range of -40°C to +125°C. The component is housed in a compact 5-pin SOT-23 surface-mount package.

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

• Utilizes CMOS technology for micropower efficiency and low dropout voltage characteristics.
• Provides stable regulated output suitable for sensitive portable electronics.
• Features thermal limiting protection to safeguard against overheating conditions.

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

• GSM cellular handsets
• TDMA cellular handsets
• Laptop and notebook portable computers

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

Verify the specific suffix 'S' indicates tape and reel packaging configuration as per standard manufacturer conventions for this series. Confirm the output voltage remains fixed at 2.5V for the exact part number variant. Ensure compatibility with the required SOT-23-5 footprint during PCB layout. Cross-reference datasheet revisions to confirm pinout consistency with existing designs.

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

Select this component when a fixed 2.5V rail is required for low-power CMOS logic or RF sections in mobile devices. The 150mA current capability suits moderate load requirements without excessive heat generation. Consider the SOT-23-5 package size for space-constrained board layouts. Verify that the input voltage supply exceeds the minimum dropout requirement for the expected load current.

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

This regulator belongs to the FAN2502/03 family of micropower LDOs designed for portable consumer electronics. The series leverages CMOS architecture to achieve high efficiency and low quiescent current compared to older bipolar designs. These regulators are optimized for battery-powered systems where power conservation and small form factors are critical design constraints.

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

Check for pin-compatible alternatives within the same LDO family if different output voltages are needed. Verify that substitute components maintain similar dropout voltage and noise specifications for sensitive analog circuits. Ensure replacement parts support the same operating temperature range and current limits.