FAN48611UC53X

Overview

The FAN48611UC53X is a synchronous TinyBoost DC-DC step-up regulator manufactured by onsemi. It operates within an input voltage range of 2.7 V to 4.8 V and provides a fixed output of 5.25 V with a maximum output current of 350 mA. The device features a switching frequency of 2.7 MHz and incorporates a shutdown function for power management. It is housed in a compact 9-WLCSP package measuring 1.22 x 1.22 mm, designed for space-constrained applications.

Feature Summary

• Synchronous boost topology for high efficiency
• Compact 9-WLCSP footprint
• Integrated shutdown control

Applications

• Portable electronic devices
• Battery-powered systems
• Mobile communication modules

Procurement Notes

Verify the specific suffix '53X' against the official datasheet to confirm the fixed 5.25 V output voltage. Ensure compatibility with the 9-WLCSP 1.22x1.22 mm package dimensions during PCB layout. Confirm that the operating temperature range meets system requirements before finalizing procurement.

Selection Notes

Select this component when a small form factor is critical due to its tiny WLCSP package. It is suitable for single-cell lithium-ion battery applications requiring a stable 5.25 V rail. Consider the 350 mA current limit and 2.7 V minimum input voltage when designing the power stage.

Part Context

This part belongs to the TinyBoost family of synchronous regulators from onsemi. These components are engineered for ultra-small footprints and high efficiency in portable electronics. The FAN48611 series specifically targets applications needing step-up conversion from low input voltages.

Replacement Considerations

Check for direct pin-compatible alternatives within the same TinyBoost family or similar packages from other manufacturers. Verify electrical parameters such as output voltage, current capacity, and switching frequency to ensure functional equivalence.