Product Specification

LP173WD1

Liquid Crystal Display

3. Electrical Specifications

3-1. Electrical Characteristics

Table 2. ELECTRICAL CHARACTERISTICS

The LP173WD1 requires two power inputs. The first logic is employed to power the LCD electronics and to

drive the TFT array and liquid crystal. The second backlight is the input about LED BL.with LED Driver.

Parameter

Symbol

Values

Unit

Notes

Min

Typ

Max

LOGIC :

PS

l I

t V lt

V

30

33

36

V

Power Supply Input Voltage

3.0

3.3

3.6

V

Power Supply Input Current

-

455

515

mA

1

Power Consumption

-1.5

1.7

W

1

Power Supply Inrush Current

-

-

1000

mA

LVDS Impedance

90

100

110

Ω

2

BACKLIGHT : ( with LED Driver)

LED Power Input Voltage

7.0

12.0

20.0

V

LED Power Input Current

-

20

25

mA

3

LED Power Input Current

20

25

mA

3

LED Power Comsumption

-4.8

5.0

W

3

LED Power Inrush Current

-

-

1000

mA

PWM Dimming (Duty) Ratio

-

6

-

100

%

4

PWM Frequency

200

1500

Hz

5

PWM High Level Voltage

3.0

-

5

V

PWM Low Level Voltage

0-

0.5

V

LED EN High Voltage

V

30

5

V

Note)

1. The specified Icc current and power consumption are under the Vcc = 3.3V , 25℃, fv = 60Hz condition

whereas Mosaic pattern is displayed and fv is the frame frequency.

LED_EN High Voltage

3.0

-

5

V

LED_EN Low Voltage

0-

0.5

V

Life Time

10,000

-

-

Hrs

6

2. This impedance value is needed to proper display and measured form

LVDS Tx to the mating connector.

3. The specified LED current and power consumption are under the Vled = 12.0V , 25℃, Dimming of Max

luminance whereas White pattern is displayed and fv is the frame frequency.

4. The operation of LED Driver below minimum dimming ratio may cause flikering or relaibility issue.

5. This Spec. is not effective at 100% dimming ratio as an exception because it has DC level equivalent

Ver. 1.0

27.May, 2009

6/ 30

to 0Hz. In spite of acceptable range as defined, the PWM Frequency should be fixed and stable for

more consistent brightness control at any specific level desired.

6. The life time is determined as the time at which brightness of LCD is 50% compare to that of initial value

at the typical LED current. These LED backlight has 6 strings on it and the typical current of LED’s string

is base on TBDmA.