FAN2512S25X

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

The FAN2512S25X is a micropower low-dropout (LDO) voltage regulator manufactured by Fairchild Semiconductor, utilizing CMOS technology. It provides a fixed positive output voltage of 2.5 V with a maximum output current capability of 150 mA. The device operates within an input voltage range of 2.7 V to 6.5 V and features a maximum dropout voltage of 0.18 V at full load. It is housed in a SOT-23-5 surface-mount package and supports an operating junction temperature range from -40 °C to +125 °C.

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

• Utilizes CMOS technology for cost-effective micropower performance
• Includes thermal shutdown protection for enhanced reliability
• Features enable control functionality for power management

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

• GSM mobile devices
• TDMA communication systems
• Battery-powered portable electronics

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

Verify the manufacturer origin, as this component was originally produced by Fairchild Semiconductor and later acquired by onsemi. Confirm the specific suffix 'X' indicates tape-and-reel packaging if required for automated assembly. Check for RoHS compliance status and ensure the part number matches the exact 2.5V output variant to avoid confusion with other voltage options in the FAN2512 family.

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

Select this regulator when a stable 2.5V supply is needed for sensitive analog or digital circuits in space-constrained designs. The SOT-23-5 package offers a compact footprint suitable for portable applications. Ensure the input voltage remains above 2.7V and consider the 150mA current limit for load requirements. The wide operating temperature range makes it suitable for industrial or automotive environments where thermal stability is critical.

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

The FAN2512 series belongs to a family of micropower LDO regulators designed for GSM and TDMA applications. These regulators are characterized by their low dropout voltage and high power supply rejection ratio, making them ideal for noise-sensitive RF sections in wireless handsets. The S25X designation specifically identifies the 2.5V fixed output version in the SOT-23-5 package.

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

Direct substitutes include other parts from the FAN2512 family with identical pinouts and specifications, such as FAN2512S33X for 3.3V output if voltage adjustment is permissible. Cross-reference with onsemi datasheets for updated ordering information following the acquisition of Fairchild Semiconductor assets.