LD1024 datasheet(8/22 Pages) LDT

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Ver2.1

LD1024

16-Channel, Constant-Current LED Driver with LED Open Detection

LDT Inc. WE bldg. 5F, 126-33 Han-dle 1ro, Seobuk-gu, Cheonan, Chungnam, korea, 331-220

Tel. +82 41 520 7300 Fax. +82 41 520 7337 www.ldt.co.kr

(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.

OUTn –IOUTavg_0-15

△(%) = ---------------------

x 100

(1)

OUTavg_0-15

OUTavgn –IOUT(IDEAL)

△(%) = -------------------

x 100

(2)

OUT(IDEAL)

1.18V

OUT(IDEAL)

= 32.5 X ----------------

(3)

REXT

OUTn at VDD = 5.5V ) – (IOUTn at VDD = 3.0V )

100

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

(4)

OUTn at VDD = 3.0V )

2.5

OUTn at VOUTn = 3.0V ) – (IOUTn at VOUTn = 1.0V )

100

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

X ------

(5)

OUTn at VOUTn = 1.0V )

2.0

Table 1. Test Parameter Equations

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