FAN2500S285X

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

The FAN2500S285X is a fixed-output low-dropout linear regulator from the FAN2500/01 family, manufactured by onsemi. It provides a regulated output voltage of 2.85V with a maximum continuous output current of 100mA. The device operates within an input voltage range of 2.7V to 6.5V and features an extremely low dropout voltage of 100mV at full load. It utilizes CMOS technology for ultra-low power consumption, drawing only 25µA ground current during operation. The component includes thermal limiting protection and an enable/shutdown control pin that reduces quiescent current to less than 1µA when disabled.

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

• Ultra-low power consumption with 25µA ground current at 100mA load
• Low dropout voltage of 100mV at 100mA output current
• Enable/Shutdown control pin allows output disable with less than 1µA shutdown current
• Onboard thermal limiting protects against overload conditions

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 ordering suffix 'X' corresponds to tape and reel packaging as documented in the datasheet. Confirm the manufacturer origin, noting historical Fairchild Semiconductor production now under onsemi. Ensure compatibility with SOT-23-5 surface-mount footprints. Check for any lifecycle status changes or obsolescence notices prior to procurement.

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

Select this component for battery-powered portable applications requiring stable 2.85V regulation. The wide tolerance for external capacitor ESR simplifies design compared to older LDOs. Consider the 100mA current limit and thermal resistance characteristics for heat dissipation requirements. Verify that the 2.7V minimum input voltage meets system supply constraints.

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

This part belongs to the FAN2500/01 family of micropower low-dropout regulators designed for cost-effective performance in GSM and TDMA cellular handsets and portable computers. The FAN2500 variant specifically uses Pin 4 as a Bypass pin for noise reduction in fixed-voltage configurations, distinguishing it from the adjustable ADJ version and the ERR flag version.

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

Pin-compatible replacements within the same family include other fixed voltage variants such as FAN2500S25X, FAN2500S26X, FAN2500S27X, FAN2500S30X, and FAN2500S33X.