FAN49103AUC34AX

Voltage Regulators - DC DC Switching Regulators Overview

The FAN49103AUC34AX is a TinyPower synchronous buck-boost switching regulator manufactured by onsemi. It operates within an input voltage range of 2.5 V to 5.5 V and delivers up to 2.5 A output current. The device features a fixed 3.4 V output, a 1.8 MHz switching frequency, and a typical quiescent current of 55 uA. Packaged in a 20-WLCSP, it supports an operating temperature range from -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous buck-boost topology for efficient power conversion across varying input conditions
• Compact WLCSP package design suitable for space-constrained mobile applications
• Integrated high-side and low-side MOSFETs with internal compensation

Voltage Regulators - DC DC Switching Regulators Applications

• Smartphones and tablets requiring stable power during battery discharge
• Portable consumer electronics with single-cell lithium-ion batteries
• IoT devices operating under variable supply voltage conditions

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'AUC34AX' against official onsemi documentation to confirm the fixed 3.4 V output configuration. Ensure compatibility with the 20-WLCSP footprint and check RoHS compliance status prior to integration into production designs.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.4 V output is required from a 2.5 V to 5.5 V input source. It is appropriate for systems needing 2.5 A continuous current with minimal external component count. Consider thermal performance in dense PCB layouts due to the small package size.

Voltage Regulators - DC DC Switching Regulators Part Context

Part of the TinyPower series, designed for portable electronics. It integrates power switches and control logic to minimize solution size. The synchronous rectification improves efficiency compared to non-synchronous alternatives, supporting longer battery life in mobile devices.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check onsemi datasheets for direct pin-compatible substitutes within the FAN4910x family. Verify electrical parameters such as output voltage tolerance and current limits before substituting with other manufacturers' buck-boost regulators.