Ver1.0

8

LD1072

16-CH LED DRIVER WITH DOT CORRECTION AND 12-BIT PWM CONTROL

ELECTRICAL CHARACTERISTICS

(VDD=3V to 5.5V, TA = -40oC to 85) (unless otherwise noted)

PARAMETER

SYMBOL

TEST CONDITION

MIN.

TYP.

MA

X.

UNI

T

Thermal error flag

threshold

T

(TEF)

Junction temperature *(5)

150

170

℃

LED open detection

threshold

V

(LED)

-

0.3

0.4

V

(1) The deviation of each output from the average of OUT0-15 constant current. It is calculated by Equation 1 in

Table 1.

(2) The deviation of average of OUT1-15 constant current from the ideal constant-current value.

It is calculated by Equation 2 in Table 1. The ideal current is calculated by Equation 3 in Table 1.

(3) The line regulation is calculated by Equation 4 in Table 1.

(4) The load regulation is calculated by Equation 5 in Table 1.

(5) Not tested. Specified by design.

I

△(%) = -------------------------

x 100

(1)

I

OUTavg_0-15

I

△(%) = -------------------------- x 100

(2)

I

OUT(IDEAL)

1.18V

I

OUT(IDEAL)

= 35 X ----------------

(3)

(40+R

(I

100

△(%/V) = ------------------------------------------------------------ X ------

(4)

(I

2.5

(I

100

△(%/V) = ------------------------------------------------------------

X ------

(5)

(I

2.0

Table 1. Test Parameter Equations