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IK2802D Datasheet(PDF) 8 Page - IK Semicon Co., Ltd |
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IK2802D Datasheet(HTML) 8 Page - IK Semicon Co., Ltd |
8 / 13 page IK2802 8 2011, February Ver. 03 Constant Current In LED lighting applications, IK2802 provides nearly no variation in current from channel to channel and from IC to IC. This can be achieved by: 1) The maximum current variation between channels is less than ±3%, and that between ICs is less than ±6%. 2) In addition, the current characteristic of output stage is flat and users can refer to the figure as shown below. The output current can be kept constant regardless of the variations of LED forward voltages (VF). This guarantee s LED to be performed on the same brightness as user’s specification. Figure 5 Iout versus Vds 0 40 80 120 160 200 240 280 320 360 400 0 1 2 3 4 Vds (V) 16,1k 4,9k 2,9k 2,1k 1,6k |
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