FAN49101AUC340X

Overview

The FAN49101AUC340X is a synchronous buck-boost DC-DC converter from onsemi, designed for high-efficiency power management in portable applications. It integrates a 20W capability within a compact 20-pin WLCSP package. The device supports both buck and boost topologies, enabling operation across input voltage ranges that may be above or below the regulated output level. This flexibility allows it to maintain stable output voltage even as battery levels discharge or charge.

Feature Summary

• Integrated synchronous rectification for enhanced efficiency
• Buck-boost topology supporting wide input voltage variations
• Compact footprint suitable for space-constrained designs

Applications

• Portable consumer electronics requiring extended battery life
• Battery-powered devices with varying input voltage profiles
• USB Type-C power delivery interfaces

Procurement Notes

Verify the specific suffix 'AUC340X' against the official onsemi datasheet to confirm the fixed 3.4V output configuration and tape-and-reel packaging details. Ensure compatibility with your PCB layout requirements for the 20-WLCSP package. Cross-reference the RoHS compliance status and operating temperature range specified in the latest product documentation before finalizing procurement.

Selection Notes

Select this component when an application requires a single regulator to handle both step-down and step-up scenarios efficiently. It is suitable for systems where the input source voltage fluctuates significantly around the desired output voltage. Consider the thermal performance of the WLCSP package relative to the expected load current and ambient conditions.

Part Context

This part belongs to the FAN4910x series of power management ICs from onsemi. The series focuses on providing efficient power conversion for mobile and handheld devices. The FAN49101 variant specifically offers integrated MOSFETs for buck-boost operation, distinguishing it from simpler buck-only regulators.

Replacement Considerations

Check for direct pin-compatible alternatives within the FAN4910x family, such as variants with different fixed output voltages (e.g., 3.3V). Verify if other manufacturers offer equivalent buck-boost controllers with similar electrical characteristics and package dimensions.