L16B06

Preliminary

CMOS IC

UNISONIC TECHNOLOGIES CO., LTD

9 of 13

www.unisonic.com.tw

QW-R502-A45.c



T I M I N G DI AGRAM (Cont .)

4. EN -OUT0

5. OUTn+1-OUTn



CON ST AN T -CU RREN T OU T PU T

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:

REXT

OUT

REXT

V(V)

I(mA)

M

R(K

Ω)





Iout(mA)

3

5

10

20

30

40

50

M

55

54.1

50

46.6

45

43.3

41.6s

In order to obtain a good performance of constant-current output, a suitable output voltage is necessary.