The RT7310 is an active PFC, thyristor dimming LED driver controller, and a high power factor constant current LED driver. Its design is optimized for compatibility with phase-cut dimmers. It can support high power factor in a wide input voltage range, and work in quasi-resonant mode to achieve higher efficiency. Because the primary side regulation is used, the RT7310 can obtain accurate output current without using a shunt regulator and optocoupler on the secondary side, reducing the number of components, cost, and the size of the drive circuit. The RT7310 is compatible with various phase-cut dimmers, including front-cut thyristor dimmers and rear-cut dimmers. RT7310 includes multiple protection functions, including LED open circuit protection, LED short circuit protection, output diode short circuit protection, VDD undervoltage lockout, VDD overvoltage protection, overtemperature protection and cycle-by-cycle current limit.
application
Phase-cut dimming LED lamps
AC / CC TRIAC dimming
Key features
Support phase-cut dimmer
Precise LED current regulation
No need to use optocoupler and TL431
Power factor correction
Quasi-resonant switching technology
Maximum / minimum switching frequency limit
Longest / shortest on-time limit
Wide VDD voltage range (up to 25V)
Multiple protection functions
LED open circuit protection
LED short circuit protection
Output diode short circuit protection
VDD undervoltage protection
VDD overvoltage protection
Over temperature protection
Cycle-by-cycle current limit
For samples, please contact Chen Sheng 15622829450 QQ2355410653
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