HC2702D POWER IC

HC2702D is a high-performance AC/DC power switch IC which is operating in primary side sensing and regulation. HC2702D includes an internal power BJT and is designed for off-line power supplies within 10W output power. It operates at PFM in CC mode and at PWM+PFM in CV mode to providing accurate constant voltage, constant current (CV/CC) regulation without requiring an opto-coupler and secondary control circuitry. It has internal cable compensation function for tight constant voltage regulation and internal AC input compensation for tight constant current regulation. The HC2702D has a number of key built-in functions and protection features, so that it can minimize the external component.

• Integrated BJT , suitable for 10W The following isolation scheme
• Self-powered, optimized system cost
• Patented current drive to reduce temperature rise.
• Output line loss compensation technology
• Output short circuit protection function
• VCC Undervoltage protection function
• Over temperature protection