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FAN2519S27X is listed in the Voltage Regulators - Linear, Low Drop Out (LDO) Regulators range at ChipApex. The manufacturer field lists onsemi. Its product description is IC REG LINEAR 2.7V 50MA SOT23-5. Review the specifications below when checking this part for your BOM.
The FAN2519S27X is a fixed-output low-dropout linear regulator from the FAN2518/19 family, manufactured by onsemi. It provides a nominal output voltage of 2.7 V with a maximum continuous output current of 50 mA. The device utilizes CMOS technology and features an enable/shutdown control pin that reduces ground current to less than 1 µA when disabled. Pin 4 serves as an open-drain error flag (ERR) indicating if the output voltage drops below 95% of the nominal value due to faults such as input dropout or thermal overload. The regulator operates within an input voltage range of 2.7 V to 6.5 V and supports junction temperatures up to 125 °C.
Verify component authenticity through authorized channels as this part number may be obsolete. Confirm package integrity upon receipt, specifically checking for SOT-23-5 physical condition. Review datasheet specifications regarding thermal resistance and PCB layout requirements to ensure proper heat dissipation during operation. Validate that the ERR pin configuration matches system diagnostic needs before final integration.
Select this component for designs requiring precise 2.7 V regulation with minimal quiescent current draw. The inclusion of an error flag distinguishes it from the FAN2518 series, which lacks this diagnostic feature. Ensure the application benefits from the fast power-cycle capability required by specific cellular standards. Verify that the 50 mA load capacity meets peak demand without exceeding thermal limits in the chosen enclosure.
This device belongs to the FAN2518/19 micropower LDO family designed for portable electronics. It shares the same footprint and basic functionality as the FAN2518 but replaces the adjustable or bypass pin with an error status output. This family targets battery-powered devices needing efficient power management and compact surface-mount packaging.
FAN2519S30X
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