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.
DD312
Tel：886-3-5645656
Fax：886-3-5645626
DD312
HIGH CONSTANT CURRENT LED DRIVER
with ERROR DETECTION
General Description
DD312 is a high constant current driver designed for LED lighting application and power
LEDs. It incorporates a constant current circuitry with current value set by an external resistor. The
output enable terminal allows dimming control by system. The fast response of output current can
adapt to high dimming resolution and high refresh rate applications. Built-in LED open detection,
over temperature, and over current protection functions ensure the system reliability.
Features
z Maximum output current: 1A (determined by the external resistor)
z Minimum output voltage: 1V (Iout = 1A)
z Maximum output voltage: 18V
z
z
z
z
z
z
Output enable terminal: 1MHz (max.)
Supply voltage range: 5V ~ 18V
Over current protection
Thermal shutdown
Thermal alarm (SOP8 only)
LED open detection (SOP8 only)
Applications
z LED architectural or entertainment lighting
z LED general or specialty illumination
z LED backlighting applications
Package Types
z TO-252 or SOP8 (with thermal pad)
HIGH CONSTANT CURRENT LED DRIVER
Version:A.001
Page 1
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