onsemi AC DC Converters, Offline Switches FSQ0165RL

The FSQ0165RL is an integrated Pulse-Width Modulation (PWM) controller and SenseFET designed for valley switching operation, optimized for use in offline flyback converters. It operates within a frequency range of 55kHz to 67kHz and features low electromagnetic interference (EMI) through variable frequency control and inherent frequency modulation. The device supports high efficiency via minimum voltage switching and includes advanced burst-mode operation for reduced standby power consumption. Protection features of the FSQ0165RL include overload protection (OLP), over-voltage protection (OVP), abnormal over-current protection (AOCP), and internal thermal shutdown (TSD). It also incorporates under-voltage lockout (UVLO) with hysteresis and an internal startup circuit. The device is rated for a maximum output current of 0.9A and operates within a temperature range of -40 to +85¬8C. It is suitable for applications such as power supplies for DVD players, set-top boxes, and auxiliary power supplies for PCs and TVs. The FSQ0165RL is packaged in an 8-LSOP format, which contributes to a compact design, reducing overall component count and system size.