FAN2518S25X

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

The FAN2518S25X is a micropower low-dropout (LDO) voltage regulator manufactured by Fairchild Semiconductor, utilizing CMOS technology. It provides a fixed output voltage of 2.5 V with a maximum output current of 50 mA. The device operates within an input voltage range of 2.7 V to 6.5 V and features a maximum dropout voltage of 75 mV at full load. It offers high line regulation of 0.3% per volt and load regulation of 2%, with a voltage accuracy of 2%. The component is housed in a SOT-23-5 surface-mount package and supports an operating temperature range from -40°C to +125°C.

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

• Utilizes CMOS technology for micropower operation and cost-effective performance
• Provides extremely low shutdown current and low power consumption
• Features exceptional loop stability capable of accommodating a wide variety of capacitors
• Delivers low dropout voltage for efficient regulation under varying load conditions

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

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

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

Verify the manufacturer origin, as the part was originally produced by Fairchild Semiconductor and later integrated into onsemi. Confirm the specific suffix 'X' indicates tape and reel packaging if required for assembly. Check for RoHS compliance status and lead-free certification, as these attributes are critical for modern manufacturing standards. Ensure the component meets the required environmental specifications for the intended application environment.

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

Select this component when a fixed 2.5 V output is required with a maximum load current of 50 mA. It is suitable for applications demanding low quiescent current and fast transient response. The SOT-23-5 package is ideal for space-constrained designs. Consider the 75 mV dropout voltage at full load to ensure sufficient headroom between input and output voltages. Verify compatibility with the required output capacitor type due to the stable design characteristics.

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

The FAN2518S25X belongs to the FAN2518/19 family of micropower LDO regulators. This series is designed for portable applications requiring efficient power management. The 'S25' designation specifies the 2.5 V fixed output voltage, while 'X' typically denotes the tape and reel packaging format. The family leverages CMOS processes to achieve low noise and high PSRR compared to older bipolar technologies.

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

Direct substitutes include other parts from the same FAN2518/19 family with compatible voltage and current ratings, such as the FAN2518S33X for a 3.3 V output. Cross-reference with onsemi datasheets for updated pinouts and electrical characteristics, as manufacturing transitions may affect minor specifications.