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DD231 Datasheet, PDF (2/7 Pages) Silicon Touch Technology Inc. – 3-CHANNEL CONSTANT CURRENT LED DRIVERS | |||
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SILICON TOUCH TECHNOLOGY INC.
DD231
DD231
3-CHANNEL CONSTANT CURRENT LED DRIVERS
DESCRIPTION
The DD231 is a 3-channel constant current LED driver. Itâs designed to operate as a
constant-current sink to drive the LEDs with an external resistance in low power environment.
Because the DD231 directly determines output current by each channel in low Bit-to-Bit skew, it is
ideal for driving LED whose light intensity is proportional to the current passing through them, not
the voltage across their terminals.
This configuration eliminates the need of external capacitors and inductances. With an input
voltage range of 3V to 5V, so the device can work in general battery system. The value of constant
current can be varied using an external resistor (Iout = 5 ~30mA).
GENERAL FEATURES
ËConstant Current Output, 5~30mA.
ËSupply Voltage VDD is 3V to 5V.
ËBit-to-Bit : ± 3.0% (Max) @ IOUT = 5 ~ 30mA.
ËOnly Need One External Resistor, No Other External Parts.
ËSmall 6-Pin SOT26 Package.
APPLICATIONS
ËWhite LED Display Backlighting
ËCellular Telephones
ËHandheld Computers
ËDigital Cameras
ËPortable MP3 Players
ËPagers
ËPersonal Digital Assistant
ËE-Books and Sub Notebooks
3-CHANNEL CONSTANT CURRENT LED DRIVERS Version: A.001
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