宽输入电压8V-450V FP7176
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宽输入电压8V-450V FP7176
详细信息 General Description The FP7176 is an average current mode control LED driver IC operating in a constant off-time mode.FP7176 does not produce a peak-to-average error,and therefore greatly improves accuracy,line and load regulation of the LED current without any need for loop compensation or high-side current sensing.The output LED current accuracy is±2%. The FP7176 can be powered from an 8.0-450V supply.A PWM dimming input is provided that accepts an extemal control TTL compatible signal.The output current can be programmed by an internal 227mV reference,or controlled extemally through a 0-1.5V dimming input. Features Fast average current aontrol Intemal 8 to 450V linear regulator Programmable constant off-time switching Linear and PWM dimming capability Output short curcuit protection with skip mode Requires few extemal components for operation Applications DC/DC or AC/DC LED driver applications LED street lighting Back lighting of flat panel displays General purpose constant current source Signage and decorative LED lighting Chargers |
