LD1024 datasheet(7/22 Pages) LDT

Il numero della parte	LD1024

Spiegazioni elettronici	Constant-Current LED Driver

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Produttore elettronici	LDT [LDT Co., Ltd]

Homepage	http://www.ldt.co.kr/

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Ver2.1

7

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

ELECTRICAL CHARACTERISTICS

AT V

DD = 3.0V to 5.5 V and TA = –40°C to +85°C. Typical values at otherwise note (Ta = -40

oC to 85oC unless otherwise noted)

Characteristicsㅊ

Symbol

Condition

Min.

Typ.

Max.

Unit

Supply Voltage

V

DD

3.0

5.0

5.5

V

Output Voltage

V

DS

5.5

-

Output

Current

OUTn

I

OUT

3

45

mA

Input

Voltage

‘H” Level

V

IH

0.7V

DD

-

1.0V

DD

V

‘L” Level

V

IL

GND

-

0.3V

DD

High-level Output Voltage

V

OH

I

OH = -1 mA, DOUT

V

DD-0.4

V

Low-level Output Voltage

V

OL

I

OL = 1 mA, DOUT

0.4

V

Input Current

I

IN

V

iN = VDD or GND at DIN, CLK ,

STROBE and OEB

-1

1

uA

Constant output current

I

(OLC)

All OUTn= ON, V

O = 1 V,

R

REXT = 1.8KΩ

42

45

48

mA

Leakage output current

I

lkg

All OUTn= off ,OEB = high, V

DS =

5 V,R

REXT= 1.8 kΩ

0.1

uA

Pin to Pin Deviation

ΔI

OLC1

All OUTn= On, V

DS = 1 V,

R

REXT = 1.8 kΩ

±1.0

±3.0

%

Chip to Chip Deviation

ΔI

OLC2

All OUTn=On , V

DS = 1 V,

R

REXT = 1.8 kΩ

±1.0

±6.0

%

Output Current vs.

Supply Voltage Regulation

ΔI

OLC3

All OUTn=On, V

DS = 1 V,

R

REXT = 1.8 kΩ

±1.0

%/V

Output Current vs.

Output Voltage Regulation

Δ

IO(LC4)

All OUTn= ON, V

DS = 1 V to 3 V,

R

REXT = 1.8 kΩ,

OUT0 to OUT15 (4)

±0.5

±3.0

%/V

T(PTW)

Pre-thermal warning

threshold

T

(PTW)

Junction temperature(5)

125℃

138℃

150℃

℃

VLOD

V

(LOD)

All OUTn = ON

0.25

0.30

0.35

V

Supply Current

I

DD(off)1

DIN/CLK/STROBE=Low, OEB=H

R

REXT = 8.2K

0.5

2.7

mA

I

DD(off)2

DIN/CLK/STROBE=Low, OEB=H

R

REXT = 3.9 ㏀

0.6

3

mA

I

DD(on)1

DIN/CLK/STROBE=Low, OEB=L

R

REXT = 3.9 ㏀

0.6

3

mA

I

DD(on)2

DIN/CLK/STROBE=Low, OEB=L

R

REXT = 1.8 ㏀

0.8

4

mA

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