FAN48630UC37AX

Voltage Regulators - DC DC Switching Regulators Overview

The FAN48630UC37AX is a synchronous TinyBoost step-up DC-DC converter manufactured by onsemi, formerly Fairchild Semiconductor. It operates within an input voltage range of 2.35 V to 5.5 V and provides a fixed output voltage of 3.7 V. The device supports a maximum output current of 1.5 A with a switching frequency of 2.5 MHz. It features a bypass mode for low-noise applications and includes protection against over-current and thermal overload. The component is housed in a compact 16-WLCSP package measuring 1.78 mm x 1.78 mm, suitable for space-constrained portable electronics.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous rectification topology for high efficiency
• Integrated bypass mode for low noise operation
• Compact WLCSP packaging for minimal footprint

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics power management
• Battery-powered devices requiring step-up conversion
• Mobile communication equipment

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer status as onsemi acquired Fairchild Semiconductor. Confirm availability as the part may be obsolete or subject to last-time buy notices. Check RoHS compliance documentation for specific environmental declarations. Ensure the WLCSP package handling requirements are met during assembly.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.7 V output is required from a single-cell lithium battery source. Consider the 2.5 MHz switching frequency for smaller external inductor size compared to lower-frequency alternatives. Evaluate the 1.5 A current capability against peak load demands. Verify that the WLCSP package is compatible with the PCB manufacturing capabilities.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the TinyBoost family of synchronous boost regulators. It shares architectural similarities with other FAN4863x variants but differs in fixed output voltage settings. The series is designed for portable applications where efficiency and board space are critical constraints.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for direct pin-compatible replacements within the FAN4863x series with different output voltages if system requirements change. Verify equivalent performance from other manufacturers offering synchronous boost converters in WLCSP packages.