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FAN53612DUC205X-FS is listed in the Voltage Regulators - DC DC Switching Regulators range at ChipApex. The manufacturer field lists Fairchild Semiconductor. Its product description is SWITCHING REGULATOR. Review the specifications below when checking this part for your BOM.
The FAN53612DUC205X-FS is a synchronous buck regulator from the FAN536xx series, manufactured by Fairchild Semiconductor (now ON Semiconductor). It operates with a fixed 6 MHz switching frequency and delivers up to 1 A of output current. The device accepts an input voltage range of 2.3 V to 5.5 V. Key electrical parameters include a typical quiescent current of 24 µA and peak efficiency of 92%. It features low ripple light-load PFM mode, forced PWM operation, and external clock synchronization. Protection mechanisms include thermal shutdown, overload protection, and input under-voltage lockout.
Verify the manufacturer status as Fairchild Semiconductor was acquired by ON Semiconductor. Confirm the specific suffix 'FS' against official datasheets to ensure it denotes the correct packaging or tape-and-reel configuration. Check for RoHS compliance and active lifecycle status before procurement.
Select this component for applications requiring high efficiency at low load currents and fast transient response. The 6 MHz frequency allows for smaller passive components compared to lower-frequency regulators. Ensure the input voltage stays within the 2.3 V to 5.5 V range and the load does not exceed 1 A.
This part belongs to the FAN53601/11/12 family of step-down switching voltage regulators. These devices are designed for portable electronics where space and power efficiency are critical constraints. The series utilizes a proprietary architecture to maintain high efficiency across a wide load range.
Consult ON Semiconductor documentation for direct equivalents within the FAN536xx series. Verify pin compatibility and electrical specifications if substituting with other manufacturers' synchronous buck regulators.
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