FAN48623UC35X

Voltage Regulators - DC DC Switching Regulators Overview

The FAN48623UC35X is a synchronous TinyBoost regulator manufactured by onsemi, formerly Fairchild Semiconductor. It operates with an input voltage range of 2.35 V to 5.5 V and provides fixed output voltages of 3.5 V or 3.7 V. The device supports a pulsed load current of 2.0 A and features a switching frequency of 2.5 MHz. It is housed in a compact 16-WLCSP package measuring 1.78 x 1.78 mm. The component functions within a temperature range of -40°C to +85°C and includes a bypass mode for GSM power amplifier supply applications.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous rectification architecture for high efficiency
• Integrated bypass mode for low quiescent current operation
• Compact WLCSP footprint suitable for space-constrained designs

Voltage Regulators - DC DC Switching Regulators Applications

• GSM Power Amplifier (PA) supply
• Portable consumer electronics
• Mobile phone battery-powered systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer status carefully as onsemi acquired Fairchild Semiconductor. Confirm the specific suffix 'UC35X' matches the required output voltage. Check for End-of-Life notices or obsolescence declarations from the current manufacturer before finalizing procurement plans.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a small form factor boost converter is required for GSM PA biasing. Ensure the input source stays within the 2.35 V to 5.5 V range. Verify that the 2.0 A pulsed load capability meets the peak current demands of the target application circuit.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the TinyBoost family of synchronous step-up regulators designed for mobile communication devices. It replaces older discrete solutions or larger packages by integrating the power switch and control logic into a wafer-level chip-scale package.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for direct pin-compatible substitutes within the same TinyBoost series. Verify if newer revisions from onsemi offer updated packaging or enhanced thermal performance while maintaining electrical compatibility.