The PT6988 is a high precision buck LED Driver IC intended for dimming products with ordinary switch by on/off state in dimming time. The IC has a wide range input range which is 85V~265V and the default dimming state is three Level.
The PT6988 integrates high precision current detection and constant current circuit which can realize high precision LED constant current and excellent line voltage regulation. The PT6988 works in CRM mode, the LED current is constant with inductance and LED output voltage change, good load regulation.
The PT6988 integrates a 500V power MOSFET, uses the source driver architecture, with a low operating current, so the PT6988 doesn’t need the auxiliary winding for sensing the output current and supplying the chip. It has a few external components, saves the cost of volume system.
The multi-protection features of PT6988 greatly enhance the system reliability and safety. The PT6988 provides CS resistance short-circuit protection, short LED protection, open LED protection, VIN under voltage protection, temperature intelligent control, etc.