High-voltage power supply QX9910 down constant current driver SOP8 QX Springs core agent

Overview QX9910 is a high efficiency, stable and reliable high-brightness LED lights constant current driver control IC, built-in high-precision comparator, off-time control circuit, constant current drive and other circuits, especially for high-power, high-brightness LED lights more than string constant current driver. QX9910 uses a fixed off-time control mode of operation, the operating frequency up to 2.5MHz, allows external inductor and filter capacitors, size reduction, efficiency. off-time minimum time can be set by external resistors and capacitors, the operating frequency can be changed according to user requirements. EN end increase in the PWM signal to adjust the brightness of LED lights. By adjusting the external resistors to control high-brightness LED lamp drive current, the LED lamp brightness constant to achieve the desired brightness, the brightness of the LED lamp flows through the high current from a few milliamperes to one ampere change. ? Feature programmable LED drive current programming ranging from a few milliamps to 1 ampere high efficiency:? Better than 90% over a wide input voltage range:? 2.5V ~ 400V High frequency operation:? The maximum operating frequency of 2.5MHz adjustable?: ? 10KHz ~ 2.5MHz drive LED lights feature strong:? LED light string from one to hundreds of high-brightness LED lights PWM adjustable brightness: Through EN end, adjust the LED brightness range of applications 220V AC powered LED lights? ? RGB LED lights big screen? 220V AC powered LED lamp? LED backlight flat panel display? LED traffic warning lights? constant current charger control? common constant current source