CQ1565RT PDF – Green Mode Power Switch – FSCQ1565RT

Part Number: CQ1565RT, FSCQ1565RT

Function: Green Mode Fairchild Power Switch

Package: TO-220F-5L, TO-3PF-7L Type

Manufacturer: Fairchild Semiconductor


CQ1565RT pdf datasheet


CQ1565RT is Green Mode Fairchild Power Switch (FPSTM). In general, a Quasi-Resonant Converter (QRC) shows lower EMI and higher power conversion efficiency compared to conventional hard-switched converter with a fixed switching frequency. Therefore, a QRC is well suited for noise-sensitive applications, such as color TV and audio. Each product in the FSCQ-Series contains an integrated Pulse
Width Modulation (PWM) controller and a SenseFET, and is specifically designed for quasi-resonant off-line Switch Mode Power Supplies (SMPS) with minimal external components.

The term “Green Mode Fairchild Power Switch” refers to a type of power switch integrated circuit (IC) developed by Fairchild Semiconductor (now part of ON Semiconductor). The Green Mode power switch ICs are designed for power supply applications that prioritize energy efficiency, low standby power consumption, and reduced environmental impact.

Fairchild Semiconductor (now ON Semiconductor) is a renowned semiconductor manufacturer that offers a range of power management ICs, including Green Mode power switches.


• Optimized for Quasi-Resonant Converter (QRC)

• Advanced Burst-Mode Operation for under 1W Standby Power Consumption

• Pulse-by-Pulse Current Limit

• Over Load Protection (OLP) – Auto Restart

• Over Voltage Protection (OVP) – Auto Restart

• Abnormal Over Current Protection (AOCP) – Latch

• Internal Thermal Shutdown (TSD) – Latch

• Under Voltage Lock Out (UVLO) with Hysteresis

• Low Startup Current (typical : 25uA)

• Internal High Voltage SenseFET

• Built-in Soft Start (20ms)

• Extended Quasi-Resonant Switching

CQ1565RT pinout




• Audio Amplifier

CQ1565RT PDF Datasheet

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