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The FAN48630BUC3AJX is a synchronous step-up (boost) switching regulator IC manufactured by Fairchild Semiconductor. It features a maximum output current of 1.5A and operates with a switching frequency of up to 3MHz. The device supports an input voltage range from 2.3V to 4.5V, delivering a fixed maximum output voltage of 5.4V. It utilizes a WLCSP package with dimensions of 0.88 x 1.23 x 0.378mm. The component functions within a temperature range of -40°C to +85°C.
Verify the manufacturer designation as Fairchild Semiconductor or ON Semiconductor, noting corporate acquisitions. Confirm the specific suffix 'BUC3AJX' matches the required package and tape/reel configuration. Ensure RoHS compliance status aligns with project requirements. Cross-reference the datasheet revision to confirm electrical parameters match the design specifications.
Select this component when a compact synchronous boost solution is needed for inputs between 2.3V and 4.5V. The 1.5A output current capacity suits moderate load applications. The 3MHz switching frequency allows for smaller external inductors and capacitors. Verify that the WLCSP package size fits the PCB layout constraints and thermal management strategy.
This part belongs to the TinyBoost family of regulators, designed for space-constrained portable applications. It integrates synchronous rectification to improve efficiency compared to asynchronous designs. The bypass mode feature allows direct connection of the input to the output under specific conditions, reducing quiescent current consumption.
Check for pin-compatible alternatives within the same TinyBoost series. Verify if other manufacturers offer equivalent synchronous boost regulators with similar current ratings and package dimensions. Ensure functional compatibility regarding bypass mode operation and switching frequency ranges.