FAN4860UC5X

Overview

The FAN4860UC5X is a synchronous boost regulator from onsemi's TinyBoost series, housed in a compact 6-WLCSP package. It operates with an input voltage range of 2.3 V to 4.5 V and provides a fixed output of 5 V. The device supports up to 930 mA switching current and features a 3 MHz switching frequency. Quiescent current is specified at 45 uA, with an operating temperature range of -40°C to +85°C.

Feature Summary

• Synchronous rectification for improved efficiency
• Compact WLCSP footprint for space-constrained designs
• Integrated shutdown control for power management

Applications

• Portable consumer electronics
• Battery-powered devices
• Mobile communication equipment

Procurement Notes

Verify component status as the FAN4860UC5X is listed as obsolete or end-of-life by the manufacturer. Confirm availability through authorized distributors for remaining stock or consider alternative sourcing channels. Ensure compliance with RoHS standards and check for any specific handling requirements associated with the WLCSP package during assembly.

Selection Notes

Select this component when a fixed 5 V output is required from a single-cell lithium-ion battery source. The 3 MHz frequency allows for smaller external passive components compared to lower-frequency alternatives. Evaluate the 930 mA current limit against peak load demands to ensure adequate headroom for transient response.

Part Context

Part of the TinyBoost family designed for high-efficiency power conversion in mobile applications. The FAN4860 series offers various output configurations and current ratings within the same compact form factor, enabling design flexibility across different product lines while maintaining consistent thermal and electrical performance characteristics.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.