FAN48623UC36FX

Voltage Regulators - DC DC Switching Regulators Overview

The FAN48623UC36FX is a synchronous step-up DC/DC converter manufactured by onsemi, formerly Fairchild Semiconductor. It operates with an input voltage range of 2.5 V to 5.5 V and provides a fixed 3.6 V output. The device delivers up to 1 A of output current and features a low quiescent current of 27 µA. It utilizes a WLCSP-9 package for compact surface-mount installation. The switching frequency is fixed at 2.5 MHz, supporting efficient power conversion within an operating temperature range of -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous boost topology for high efficiency
• Integrated shutdown control for power management
• Compact WLCSP-9 footprint for space-constrained designs

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics
• Mobile communication devices
• Battery-powered systems requiring voltage boosting

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer designation as onsemi, resulting from the acquisition of Fairchild Semiconductor. Confirm the specific suffix UC36FX indicates the fixed 3.6 V output variant. Ensure compatibility with WLCSP-9 soldering profiles during assembly. Cross-reference official datasheets for thermal performance requirements in dense PCB layouts.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.6 V output is required from a single-cell lithium-ion or similar battery source. The 1 A current limit suits moderate load applications. Consider the 2.5 MHz frequency for balancing component size and efficiency. Evaluate the WLCSP-9 package constraints against available board space.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the FAN48695/FAN48623 family of synchronous boost regulators. These devices are designed for portable applications where small solution size and high efficiency are critical. The series typically integrates power switches and control logic in minimal packages to reduce external component count.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for direct pin-compatible upgrades within the onsemi portfolio. Verify if alternative suffixes offer different output voltages or packaging options. Ensure any substitute maintains the 2.5 MHz switching frequency and WLCSP-9 form factor.