Ver 1.1

9

LD1074

16-Channel Constant Current LED Driver With 16-Bit PWM Control and Dot-Correction

Characteristics

Symbol

Condition

Min.

Typ.

Max.

Unit.

Setup Time

SDI

–DCLK↑

t

SU0

Rext=700

Ω

Ω

μF

5

-

-

ns

LE↑–DCLK↑

t

SU1

5

-

-

ns

LE↓–DCLK↑

10

-

-

ns

Hold Time

DCLK↑–SDI

t

H0

10

-

-

ns

DCLK↑–LE↓

t

H1

15

-

-

ns

Propagation Delay Time

DCLK

–SDO

t

PD0

-

25

33

ns

GCLK

–OUT4n *

t

PD1

-

50

-

ns

LE

–SDO**

t

PD2

-

30

40

ns

Staggered Delay of Output

OUT4n +1*

t

DL1

-

5

-

ns

OUT4n +2 *

t

DL2

-

10

-

ns

OUT4n +3 *

t

DL3

-

15

-

ns

Pulse Width

LE

15

-

-

ns

In-message Error Detection Duration

(Count by GCLK)

t

EDD

-

-

10

GCLK

Compulsory Error Detection Operation

Time***

t

ERR-C

-

-

700

ns

Data Clock Frequency

-

-

30

MHz

Gray Scale Clock Frequency****

-

-

33

MHz

Switching

Speed of

Output

Channels

High-Speed

Rise Time

GCLK=2MHz

(All channels

turn on)

-

17

-

ns

Fall Time

-

40

-

ns

Low-Speed

Rise Time

-

20

-

ns

Fall Time

-

75

-

ns

* Refer to the Timing Waveform, where n=0, 1, 2, 3.

**In timing of “Read Configuration” and “Read Error Status Code”, the next DCLK rising edge should be t

falling edge of LE.

***Users have to leave more time than the maximum error detection time for the error detection.

****With uniform output current.