Primary Side CC Regulator for LED driver
PT4204 is targeted to sub-5W LED lighting applications.
It is designed for the flyback topology, and regulates output
current without the secondary feedback loop. A 600V power
switch is integrated into PT4204 witch is helpful for reducing
the circuit board dimension and system total cost.
Accurate CC (constant current) regulation can be
achieved with built in compensation circuitry. Integrated line
and primary inductance compensation ensures output current
free of line voltage and primary inductance variations.
Complete protection functions have been integrated
allows PT4204 to protect against all fault conditions including
cycle by cycle current limit, output open/short circuit, line
under-voltage, and over temperature shut down.
PT4204 is available in SOP-8 package.
z CC Control Without Secondary Feed back
z Compensates transformer Inductor Variation
z Built in 600V power switch
z Output Over Voltage Protection
z Output Short Circuit Protection
z Feedback resistor open circuit protection
z Line Under Voltage Protection
z Cycle by Cycle Current Limit
z Over Temperature Protection
z 1~5W LED Power Supplier
ORDERING PART NUMBER
-40℃ to 85℃
Assembly Factory Code
Tape and Reel
TYPICAL APPLICATION CIRCUIT
PT4204_DSB Ver. EN0.1