FSL306LRLX

AC DC Converters, Offline Switchers Overview

The FSL306LRLX is a PWM controller and SENSEFET integrated circuit designed for high-performance offline buck, boost, and non-isolated flyback switching power supplies. It features a built-in avalanche-rated SENSEFET with a breakdown voltage of 650 V and operates at a fixed switching frequency of 50 kHz. The device includes an internal high-voltage regulator that enables operation without auxiliary bias windings, simplifying design. Key electrical parameters include a rated power of 7 W, output current capability of 150 mA, and a supply voltage range of 7 V to 26 V. It supports surface mount installation in an LSOP-8 package.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a high-voltage power regulator allowing operation without external bias circuits or auxiliary windings.
• Features a built-in transconductance amplifier to reduce the number of external feedback compensation components.
• Includes random frequency modulation to spread EMI energy across a wider spectrum and reduce electromagnetic interference.
• Provides comprehensive protection mechanisms including over-current, over-voltage, thermal shutdown, and open-loop feedback detection.

AC DC Converters, Offline Switchers Applications

• Offline buck switching power supplies
• Boost switching power supplies
• Non-isolated flyback power converters

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix (e.g., LRL vs LRLX) against the manufacturer's official datasheet to confirm package type and tape/reel specifications. Ensure the component meets RoHS compliance requirements for your target market. Cross-reference the part number with authorized distributors to confirm availability and authenticity. Check for any recent lifecycle status updates such as obsolescence or recommended new replacements.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring minimal external parts count and simplified biasing solutions. It is suitable for applications where EMI reduction is critical due to its frequency modulation feature. Consider the 650 V breakdown voltage when designing for higher input voltage ranges. Evaluate the thermal performance given the 7 W rated power and 100 °C/W thermal resistance characteristics.

AC DC Converters, Offline Switchers Part Context

The FSL306LRLX belongs to onsemi's family of intelligent power switches combining PWM control with power MOSFET technology. This integration targets cost-sensitive and space-constrained power supply designs by reducing the bill of materials. The device is categorized under active devices within the power management segment, specifically serving AC-DC conversion needs.

AC DC Converters, Offline Switchers Replacement Considerations

Check for direct substitutes like FSL306LR if packaging differences are acceptable. Verify pin compatibility and electrical parameter equivalence before substitution. Consult onsemi documentation for any updated versions or enhanced performance variants within the same product line.