FAN48630UC45X

Voltage Regulators - DC DC Switching Regulators Overview

The FAN48630UC45X is a synchronous boost switching regulator IC manufactured by Fairchild Semiconductor, now part of onsemi. It operates within an input voltage range of 2.35 V to 5.5 V and delivers a maximum output current of 1.5 A. The device features a fixed positive programmable output voltage of 4.5 V with a tolerance of 4.76 V. It utilizes a 2.5 MHz switching frequency and incorporates a bypass mode for low-noise applications. The component is housed in a compact 16-UFBGA WLCSP package and supports operation temperatures from -40 °C to +85 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a synchronous boost topology with a dedicated bypass mode for efficient power management.
• Utilizes a compact 16-bump Wafer-Level Chip-Scale Package (WLCSP) optimized for space-constrained designs.
• Supports programmable output voltage configuration with integrated shutdown functionality.

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronic devices requiring high-efficiency step-up conversion
• Battery-powered systems needing stable voltage regulation
• Space-limited circuit boards utilizing WLCSP footprints

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer status as Fairchild Semiconductor or onsemi, noting potential corporate transitions. Confirm the specific suffix UC45X corresponds to the 4.5V output variant. Check for End-of-Life (EOL) notices or Product Change Notifications (PCN) as some related models in this series are marked discontinued. Ensure RoHS compliance documentation is available for procurement validation.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a 1.5 A synchronous boost solution is required in a minimal footprint. The 2.5 MHz frequency allows for smaller external passive components compared to lower-frequency alternatives. Consider the bypass mode feature if low noise performance is critical during light load conditions. Verify that the 2.35 V minimum input voltage aligns with the system's battery discharge curve.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the TinyBoost family of regulators, designed for portable applications. It shares architectural similarities with other FAN48630 variants but differs in output voltage settings. The WLCSP packaging distinguishes it from larger surface-mount packages used in previous generations of boost converters from the same manufacturer.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source data. Users should consult official distributor databases for cross-reference information or contact the manufacturer for recommended alternatives.