FAN5361UC182X

Voltage Regulators - DC DC Switching Regulators Overview

The FAN5361UC182X is a synchronous buck regulator manufactured by Fairchild Semiconductor, now part of onsemi. It operates with an input voltage range from 2.3 V to 5.5 V and provides a fixed output voltage of 1.8 V. The device supports a maximum output current of 600 mA and features a switching frequency of 6 MHz. It utilizes a 6-pin WLCSP package with dimensions of approximately 0.97 mm x 1.37 mm x 0.378 mm. The component functions within a temperature range of -40 °C to +85 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous rectification topology for improved efficiency
• Fixed-frequency operation at 6 MHz
• Compact WLCSP packaging for space-constrained designs

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics
• Battery-powered devices
• Embedded systems requiring stable low-voltage power

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer status as Fairchild Semiconductor was acquired by onsemi. Confirm the specific suffix UC182X corresponds to the 1.8 V output variant. Check datasheet revisions for any parameter updates or pinout changes. Ensure compatibility with your PCB footprint specifications for the 6-WLCSP package. Validate RoHS compliance requirements against your project standards.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 1.8 V rail is required from a single-cell lithium battery or similar 2.3 V to 5.5 V source. The 600 mA current limit suits moderate load applications. Consider the 6 MHz frequency for balancing component size and EMI. Compare quiescent current specs if ultra-low standby power is critical for battery life in portable devices.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the TinyBuck family of synchronous regulators designed for high density. It integrates power switches and control logic into a minimal footprint. The series targets applications where board space is limited but efficient DC-DC conversion is necessary. It represents a transition period product between Fairchild and onsemi branding.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

FAN5361UC18X serves as a generic reference for the same regulator with different output voltages. Verify exact electrical parameters before substitution. No direct public substitute part numbers are confirmed in the provided data.