FAN53611AUC13X

Voltage Regulators - DC DC Switching Regulators Overview

The FAN53611AUC13X is a synchronous buck regulator from the FAN53601/11 series, manufactured by onsemi (formerly Fairchild Semiconductor). It operates at a fixed switching frequency of 6 MHz and provides a fixed output voltage of 1.3 V with a maximum output current capability of 1 A. The device accepts an input voltage range from 2.3 V to 5.5 V. Key electrical parameters include a typical quiescent current of 24 µA and a peak efficiency of 92%. It utilizes synchronous rectification and features internal soft-start, UVLO, thermal shutdown, and overload protection.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous rectification architecture for high efficiency
• Fixed 6 MHz switching frequency operation
• Integrated protection mechanisms including thermal shutdown and UVLO

Voltage Regulators - DC DC Switching Regulators Applications

• Data cards supporting 3G, 4G, WiFi, WiMAX, and WiBro standards
• Tablets and ultra-mobile PCs
• Digital still cameras (DSC) and digital video cameras (DVC)

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify component authenticity as the manufacturer transitioned from Fairchild Semiconductor to onsemi. Confirm the specific suffix indicates the 1.3 V fixed output variant. Check datasheet revisions for any pinout or electrical specification updates prior to integration into final designs.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for space-constrained portable applications requiring efficient power conversion from single-cell lithium-ion sources. The 6 MHz frequency allows for smaller passive components compared to lower-frequency regulators. Ensure the load current does not exceed 1 A and the input voltage remains within the 2.3 V to 5.5 V operational window.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the FAN53601/11 TinyBuck family, designed for low-power portable electronics. It shares architectural similarities with the FAN53611AUC11X (1.1 V output) and FAN53611AUC12X (1.2 V output), differing primarily in the fixed output voltage setting while maintaining identical package and functional characteristics.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

FAN53611AUC11X: Identical functionality with 1.1 V fixed output. FAN53611AUC12X: Identical functionality with 1.2 V fixed output. Verify that the system design can tolerate the specific output voltage difference when substituting these variants.