FAN2500S26X

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

The FAN2500S26X is a fixed-output low-dropout linear voltage regulator from the FAN2500/01 family, manufactured by onsemi. It provides a nominal output voltage of 2.6 V with a maximum continuous output current of 100 mA. The device operates within an input voltage range of 2.7 V to 6.5 V and features an ultra-low dropout voltage of 140 mV at full load. It incorporates thermal limiting protection and an enable/shutdown control pin that reduces ground current to less than 1 µA when disabled. The component utilizes CMOS technology and is housed in a compact SOT-23-5 surface-mount package.

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

• Utilizes CMOS technology for micropower operation with extremely low quiescent current consumption.
• Features an Enable/Shutdown control pin allowing user-defined power-down states with minimal leakage.
• Incorporates onboard thermal limiting circuitry to protect against overheating during overload conditions.
• Designed for exceptional loop stability across a wide variety of external capacitor types and ESR values.

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 suffix '26X' confirms the 2.6 V fixed output configuration. Confirm the 'S' designation indicates the SOT-23-5 package type. Ensure the final 'X' denotes tape and reel packaging if required for automated assembly. Cross-reference the manufacturer part number with official datasheets to validate electrical characteristics and pin assignments before integration.

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

Select this component for battery-powered portable applications requiring stable regulation with minimal voltage drop. The device is suitable where space is constrained due to its small SOT-23-5 footprint. Consider the thermal resistance characteristics of the PCB layout when designing for high ambient temperatures or sustained high-load currents to ensure junction temperature limits are not exceeded.

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

This regulator belongs to the FAN2500/01 family of 100 mA CMOS LDOs. The FAN2500 variant distinguishes itself through Pin 4 functionality; specifically, the 'XX' suffix indicates a bypass pin configuration optimized for noise reduction in fixed-voltage applications. This family offers improvements over older BiCMOS designs, including lower dropout voltages and enhanced compatibility with various output capacitors.

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

FAN2500S26 (Cut Tape)

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

What is the function of Pin 4 on the FAN2500S26X?

Pin 4 serves as a Bypass pin. Connecting a capacitor between this pin and ground allows for optimal noise performance at the output.

How does the device handle overload conditions?

The regulator includes thermal limiting protection. If the die temperature exceeds the shutdown limit, the output is disabled until the device cools sufficiently to re-enable safely.