FAN48623UC50X

Overview

The FAN48623UC50X is a synchronous TinyBoost regulator manufactured by Fairchild Semiconductor, now part of onsemi. It operates with an input voltage range of 2.5 V to 5.5 V and provides a programmable output up to 5.3 V. The device delivers a maximum output current of 2.5 A at a switching frequency of 2.5 MHz. It features a 16-WLCSP package (1.8x1.8 mm) and supports bypass mode. The component functions within a temperature range of -40°C to +85°C.

Feature Summary

• Synchronous rectification for improved efficiency
• Integrated bypass mode for low noise applications
• Compact WLCSP packaging for space-constrained designs

Applications

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

Procurement Notes

This component is officially listed as obsolete and no longer in production by the manufacturer. Verification of availability should focus on surplus or secondary market sources rather than direct factory orders. Ensure that any sourced units are genuine and properly stored to maintain integrity, as end-of-life status may affect long-term supply chain stability.

Selection Notes

Engineers selecting this part must account for its discontinued status when designing new products. While it offers high current density in a small footprint, alternative components from the same family or newer generations should be evaluated for long-term viability. Design-in decisions should prioritize supply continuity alongside electrical performance requirements.

Part Context

The FAN48623UC50X belongs to the TinyBoost series of synchronous boost regulators. Originally produced by Fairchild Semiconductor, the product line was integrated into onsemi following corporate acquisition. This specific model represents a high-current solution designed for portable applications requiring efficient step-up conversion from single-cell lithium-ion batteries.

Replacement Considerations

Public confirmed substitute part numbers: FAN48630UC50X.