L16B06_15 Datasheet, PDF (9/13 Pages) Unisonic Technologies – 16-BIT CONSTANT CURRENT LED DRIVER

L16B06
 TIMING DIAGRAM(Cont.)
4. EN -OUT0
5. OUTn+1-OUTn
CMOS IC
 CONSTANT-CURRENT OUTPUT
Constant-current value of each output channel is set by an external resistor connected between the REXT pin
an GND. Varying the resistor value can adjust the current scale ranging from 3mA to 60mA. The reference voltage of
REXT terminal (Vrext) is approximately 1.2V. The output current value is calculated roughly by the following
equation:
Iout(mA)
3
M
55
IOUT(mA)

VREXT(V)
RREXT(KΩ)
M
5
10
20
30
54.1
50
46.6
45
40
50
43.3
41.6s
In order to obtain a good performance of constant-current output, a suitable output voltage is necessary.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
9 of 13
QW-R502-A45.a