點晶科技股份有限公司

SILICON TOUCH TECHNOLOGY INC

.

新竹市科學園區展業一路9號7樓之1

9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C.

Tel：886-3-5645656

Fax：886-3-5645626

16-channel 16-bit PWM Constant Current LED Driver

Version:PRE.001

Preliminary

Page 8

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DM632B

CHARACTERISTIC

SYMBOL

CONDITION

MIN.

TYP.

MAX.

UNIT

GCK-to-OUT

⎯

45.7

⎯

DCK(rising edge)-to-DAO

⎯

36

⎯

Propagation Delay

(‘L’ to ‘H’)

DCK(falling edge)-to-DAO

tpLH

⎯

16

⎯

GCK-to-OUT

⎯

23.8

⎯

DCK(rising edge)-to-DAO

⎯

28

⎯

Propagation Delay

(‘H’ to ‘L’)

DCK(falling edge)-to-DAO

tpHL

⎯

14

⎯

Output Current Rise Time

tor

⎯

18

⎯

Output Current Fall Time

tof

⎯

7.0

⎯

Output Delay Time Unit

Td

VIH = VCC

VIL = GND

Rrext = 2.2 K

Ω

VL = 5.0 V

CL = 13 pF

⎯

20

⎯

ns

CHARACTERISTIC

SYMBOL

CONDITION

MIN.

TYP.

MAX.

UNIT

GCK-to-OUT

⎯

48.8

⎯

DCK(rising edge)-to-DAO

⎯

23

⎯

0Propagation Delay

(‘L’ to ‘H’)

DCK(falling edge)-to-DAO

tpLH

⎯

23

⎯

GCK-to-OUT

⎯

29.6

⎯

DCK(rising edge)-to-DAO

⎯

21

⎯

Propagation Delay

(‘H’ to ‘L’)

DCK(falling edge)-to-DAO

tpHL

⎯

20

⎯

Output Current Rise Time

tor

⎯

20

⎯

Output Current Fall Time

tof

⎯

8.3

⎯

Output Delay Time Unit

Td

VIH = VCC

VIL = GND

Rrext = 2.2 K

Ω

VL = 3.3 V

CL = 13 pF

⎯

30

⎯

ns

OUTn

DAO

REXT

VCC

CL

VL

Switching Characteristics Test Circuit

A

Rrext

DAI

LAT

DCK

GCK

CL

CL

CL

CL

GND