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DM114
、DM115
點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
8-BIT CONSTANT CURRENT LED DRIVERS with 3.3V~5V supply voltage
Version:A.002
Page 10
Preliminary
Output Current vs. External Resistor
DM114
DM115
DM114: Iout ≈ 1.3V / Rext * 12
DM115: Iout ≈ 1.3V / Rext * 12.5
Output Current Performance vs. Output Voltage
DM114
DM115
Note: In order to obtain a good constant current output, a suitable output voltage is necessary. Users can get
related information about the minimum output voltage from the above graph.
0
10
20
30
40
50
60
70
80
90
0
100
200
300
400
500
600
700
800
900
Rext (Ohm)
0
10
20
30
40
50
60
70
0
200
400
600
800
1000 1200 1400 1600 1800
Rext (Ohm)
0
5
10
15
20
25
30
35
40
45
50
55
60
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 1.3 1.4 1.5
Vout (V)
0
10
20
30
40
50
60
70
80
90
100
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 1.3 1.4 1.5
Vout (V)