點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
新竹市科學園區展業一路9號7樓之1
9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C.
DD311
Tel：886-3-5645656
Fax：886-3-5645626
DD311
HIGH CONSTANT CURRENT LED DRIVER
General Description
DD311 is a single-channel constant current LED driver, which incorporates current mirror and
current switch, designed to drive power LEDs. It can provide a maximum sink current of 1A,
adjustable by reference current input. The output current is 100 times the input current value set by
an external resistor or bias voltage. Tuning or enabling the bias voltage can provide dot correction or
global brightness control in LEDs system. The Maximum output voltage of 36V can provide more
series power LEDs in a string. The output enable allows dimming control applications.
Features
z Maximum output current: 1A (determined by input reference current)
z Minimum output voltage: 1V (Iout = 1A)
z Maximum output voltage: 36V (output leakage current < 0.1uA)
z Maximum output enable frequency: 1MHz
z Excellent output current accuracy
Applications
z LED architectural or entertainment lighting
z LED general or specialty illumination
z LED backlighting applications
Package Types
z TO-252
HIGH CONSTANT CURRENT LED DRIVER
Version:A.002
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