The ON Semiconductor FSQ0165RL is a highly integrated Power Switch designed for use in switch mode power supplies (SMPS). It is part of the Fairchild Power Switch (FPS) product line, which is well-known for its high efficiency, reduced system component count, and exceptional performance in power supply applications.

This versatile controller integrates a pulse width modulation (PWM) controller and a high-voltage power MOSFET in a single package, making it an excellent choice for a wide range of AC/DC power supply applications. Its built-in high-voltage startup circuit ensures quick and reliable startup, while the advanced burst-mode operation significantly enhances efficiency during light-load conditions, reducing standby power consumption in applications such as TVs, monitors, and other standby power systems.

The FSQ0165RL features several protection mechanisms to ensure the safety and reliability of the power supply system. These include over-voltage protection (OVP), over-load protection (OLP), and thermal shutdown (TSD). The device's auto-restart capability allows it to recover from fault conditions without the need for external intervention.

With its adjustable operating frequency, the FSQ0165RL provides designers with the flexibility to optimize their power supply designs for efficiency and size. The controller operates at a frequency up to 67 kHz, allowing the use of smaller, more efficient transformers and other passive components. This can lead to a more compact and cost-effective power supply design.

Key Specifications:

• Integrated PWM Controller and MOSFET
• Wide Operating Frequency Range up to 67 kHz
• High-Voltage Startup Circuit
• Burst-Mode Operation for Improved Efficiency at Light Loads
• Multiple Protection Features: OVP, OLP, and TSD
• Auto-Restart Recovery
• Low Standby Power Consumption

The ON Semiconductor FSQ0165RL is an ideal solution for power supply designers looking for a reliable, high-performance switch mode power controller that can deliver energy-efficient power conversion in a compact footprint.