PT4207 Universal High Brightness LED Driver GENERAL DESCRIPTION PT4207 is an AC/DC buck constant current driver for high power LED lighting applications.
The IC uses a constant off-time control scheme.
Both off time and peak LED current is externally programmed.
The operating duty cycle can be as wide as 100% and it can power LED load from a 20V-450V power supply.
The peak LED current compensation makes sure the LED current is stable within the overall input range.
The PT4207 integrates a 350mA low side switch.
Besides, it provides EXT pin to drive external low side power switch to extend current capacity.
The dedicated DIM input can accept either a 0.
5V-2.
5V analog dim signal or a PWM dim s...

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