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SILICON TOUCH TECHNOLOGY INC

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3-CHANNEL CONSTANT CURRENT LED DRIVERS

Version:A.003

Page 6

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CHARACTERISTIC

SYMBOL

CONDITION

MIN.

TYP.

MAX.

UNIT

Input Voltage “H” Level

VIH

CMOS logic level

0.8VCC

⎯

VCC

Input Voltage “L” Level

VIL

CMOS logic level

GND

⎯

0.2VCC

V

IIH

VIH = VCC

⎯

⎯

1.0

Input Leakage Current

IIL

VIL = GND

⎯

⎯

1.0

uA

Output Leakage Current

IOL

VOH = 17 V

⎯

⎯

1.0

uA

VOL

IOL = 1.5 mA

⎯

⎯

0.2

Output Voltage (S-OUT)

VOH

IOH = 1.2 mA

VCC-0.2

⎯

⎯

V

Output Current Skew

(Channel-to-Channel)

*1

IOL1

⎯

⎯

±3

%

Output Current Skew

(Chip-to-Chip)

*2

IOL2

VOUT = 1.0 V

REXT = 120

Ω

4.62

4.92

5.22

mA

Output Voltage Regulation

% / VOUT

REXT = 120

Ω

VOUT = 1 V ~ 3 V

⎯

0.1

0.5

Supply Voltage Regulation

% / VCC

REXT = 120

Ω

⎯

⎯

2

% / V

all pins are open

unless VCC and GND

⎯

1.4

⎯

Vout = 1.0V

Rext = 120Ω

all outputs turn off

⎯

1.3

⎯

CKI = 20MHz

Vout = 1.0V

Rext = 120Ω

all outputs turn on

⎯

1.8

⎯

Vout = 1.0V

Rext = 2.9Ω

all outputs turn off

⎯

1.3

⎯

Supply Current

*3

CKI = 20MHz

Vout = 1.0V

Rext = 2.9Ω

all outputs turn on

⎯

1.8

⎯

mA

Iout = (Imax + Imin) / 2.