Elete 4 channel LED drives up to 32 1A LED

With True Color PWMTM dimming capability of 1000:1 Corporation (Linear Technology Corporation) 2MHz DC/DC converter LT3476 is used for the 4 launch of the channel constant current LED driver. Each channel of the device is capable of driving up to 8 1A LED in series, thus allowing the LT3476 to drive up to 32 1A LED, while having an efficiency of up to. Each of the 4 channels is controlled by an independent true color PWM signal, so that each channel can be independently adjusted with a dimming ratio of up to 1000:1. Fixed frequency, current mode architecture ensures stable operation over a wide supply voltage and output voltage range. The frequency regulation pin allows the user to optimize the frequency in the range of 200kHz to 2MHz in order to optimize the efficiency while minimizing the size of external devices. Its heat resistant enhanced 5mm 7mm QFN package contributes to a highly compact solution for the composition of the 100W LED area of the board area of the X.

LT3476 in LED detection of high output current, which can realize buck, buck boost or boost configuration. The user uses an external sense resistor to program the output current range for each channel. Each use of internal 1.5A, 36V NPN switch 4 independent drive channel. Other features include LED open circuit protection and thermal limit. The thermally enhanced LT3476EUHF 38 5mm x 7mm lead DFN package shelf. In the 1000 piece as the unit bulk purchase, each starting at $4.64. 100WLED LT3476EUHF PWM1000:1 LED VADJ10mV120mVLED 41.5A36VNPN 200kHz2MHz 96% LED -22mA -<10uA VIN2.8V16V 385mmx7mmQFN