QH7938中文資料ETC數(shù)據(jù)手冊PDF規(guī)格書

Features

? Single-stage, active power factor correction, high PF value, low THD

? Primary feedback constant current control, no need for secondary feedback circuit

? With dimming interface

? ±3 LED output current accuracy

? Excellent line voltage regulation and load regulation

? Inductor current critical continuous mode

? Ultra-low (28uA) startup current

? FB feedback resistor value is high and power consumption is low

? LED open/short circuit protection

? Current sampling resistor open circuit protection

? Cycle-by-cycle primary current limit

? Chip power supply overvoltage/undervoltage protection

? Automatic restart function

? Overheating adjustment function

? Overheating adjustment temperature can be set externally

? Using SOP-8 package