FAN2515S28X

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

The FAN2515S28X is a fixed-output micropower low-dropout (LDO) voltage regulator from the FAN2514/15 family, manufactured by onsemi. It provides a regulated 2.8V output with a maximum continuous current of 200mA and a peak capability of 300mA. The device operates within an input voltage range of 2.7V to 6.5V and features a dropout voltage of 200mV at full load. Key electrical characteristics include a ground pin current of 75µA at 200mA output and a shutdown current of less than 1µA. Pin 4 serves as an open-drain error flag indicating when the output drops below 95% of nominal.

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

• Integrated open-drain error flag output for fault detection
• Ultra-low power consumption optimized for battery-powered devices
• Fast power-cycle time suitable for CDMA handset applications
• Robust thermal limiting protection against overload conditions

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

• Cellular phones and accessories
• Personal Digital Assistants (PDAs)
• 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 package integrity and marking codes match the SOT-23-5 specification. Ensure environmental compliance documentation aligns with project requirements. Review datasheet revisions for any updates to electrical parameters or mechanical dimensions prior to finalizing procurement orders.

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

Select this regulator for portable designs requiring precise 2.8V regulation with minimal quiescent current. The integrated error flag facilitates system monitoring without external comparators. Verify that the application's capacitor selection accommodates the wide ESR stability range. Consider thermal dissipation limits based on the specific PCB copper area available for heat sinking during high-load operation.

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

This component belongs to the FAN2514/FAN2515 series of CMOS LDO regulators designed for cost-effective performance in mobile communications. While the FAN2514 variant offers adjustable or bypassed outputs, the FAN2515 specifically incorporates an error flag function. This family utilizes advanced CMOS technology to achieve superior loop stability and lower dropout voltages compared to older BiCMOS designs.

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

MIC5255-3.3YM5-TR

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

What is the function of Pin 4 on the FAN2515S28X?

Pin 4 functions as an open-drain Error Flag (ERR). It indicates a fault condition by going LOW when the output voltage drops below 95% of the nominal rated value due to issues such as input dropout, overheating, or overloading.

How does the FAN2515S28X handle thermal overload?

The device includes onboard thermal protection circuitry. If the die temperature exceeds 150°C due to excessive power dissipation, the output shuts down automatically. The output remains suspended until the temperature drops below the limit, at which point it re-enables.