FAN5358S718X

Voltage Regulators - DC DC Switching Regulators Overview

The FAN5358S718X is a step-down switching voltage regulator from onsemi, delivering a fixed positive output of 1.8V with a maximum output current of 500mA. It operates from an input voltage supply ranging from 2.7V to 5.5V. The device utilizes a proprietary control architecture and features a switching frequency of 2MHz. It is housed in a compact 6-TSSOP (SC-88, SOT-363) surface-mount package, designed for efficient power conversion in space-constrained applications.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Step-down DC/DC switching regulator topology
• Fixed 1.8V output voltage capability
• Compact 6-pin TSSOP surface-mount packaging

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronic devices requiring stable low-voltage rails
• Battery-powered systems utilizing 2.7V to 5.5V input sources
• Embedded circuits needing 500mA regulated power delivery

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'S718X' against official onsemi documentation to confirm the fixed 1.8V output and 6-TSSOP package configuration. Ensure compatibility with your board's thermal requirements and input voltage range of 2.7V to 5.5V. Cross-reference the manufacturer part number to avoid confusion with other variants in the FAN5358 family that may offer different output voltages or pinouts.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 1.8V output is required from a 2.7V–5.5V source with up to 500mA load current. The 2MHz switching frequency allows for smaller external passive components compared to lower-frequency regulators. The 6-TSSOP package is suitable for high-density PCB layouts. Confirm that the application does not require adjustable output or multiple rails, as this is a single-output fixed regulator.

Voltage Regulators - DC DC Switching Regulators Part Context

The FAN5358 series comprises step-down switching regulators designed for portable electronics. The FAN5358S718X specifically denotes the variant with a fixed 1.8V output. This series is part of onsemi's portfolio of intelligent sensing and power semiconductor solutions, targeting applications where efficiency and small form factor are critical constraints.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check onsemi datasheets for other FAN5358 variants with different output voltages if 1.8V is not required. Verify pinout compatibility before substituting with similar buck converters from other manufacturers, as interface and package dimensions may differ.