The SG6859ATY is a highly integrated PWM controller designed for high-performance, low standby power offline flyback converter applications. It incorporates various protection features and functions to enhance system reliability and safety.

Applications

• AC/DC adapters for laptops, mobile devices, and other portable electronics
• Offline battery chargers
• Standby power supplies for TVs, set-top boxes, and other consumer electronics
• LED lighting power supplies

Features

• Low startup current
• Low operating current
• Current-mode PWM control
• Leading-edge blanking
• Programmable switching frequency
• Internal slope compensation
• Cycle-by-cycle current limiting
• Over-voltage protection (OVP)
• Overload protection (OLP)
• Short-circuit protection (SCP)
• Over-temperature protection (OTP)
• Built-in soft start
• Frequency shuffling for improved EMI performance

Benefits

• Reduced standby power consumption, meeting stringent energy efficiency standards.
• Improved system reliability due to comprehensive protection features.
• Simplified design with fewer external components.
• Enhanced EMI performance due to frequency shuffling.
• Lower overall system cost.

Additional Details

The SG6859ATY typically operates with a switching frequency in the range of 65kHz. It utilizes a current-mode PWM control architecture, providing excellent line and load regulation. The built-in soft-start function minimizes stress on the power components during startup. The device is available in a compact package, making it suitable for space-constrained applications. Detailed electrical characteristics including voltage ranges, current limits, and timing parameters can be found in the official datasheet from ON Semiconductor.