Spec No.

TQ3C-8EAF0-E1DEX32-00

Part No.

TCG075VGLDA-G20

Page

10

M628090

9. Backlight characteristics

Item

Symbol

Min.

Typ.

Max.

Unit

Note

Supply voltage

3.0

−

5.5

V

Ta=-20∼70°C

ON-OFF (H)

-

V

Ta=-20∼70°C

ON-OFF (L)

BLEN

0

-

V

Ta=-20∼70°C

14

15

16

VBRT=0∼1.4V

LED forward current

1), 2)

IF

2.8

3.0

3.2

mA

VBRT=2.8V

-

510

660

mA

Supply current

-

330

430

mA

Operating life time

3), 4)

T

-

40,000

-

h

IF=15mA, Ta=25℃

1) For each “LED”

2) An input current below 5.0mA may reduce the brightness uniformity of the LED backlight.

This is because the amount of light from each LED chip is different. Therefore, please

evaluate carefully before finalizing the input current.

3) When brightness Minimum 50% of initial brightness.

The average life of a LED will decrease when the LCD is operating at higher temperatures.

4) Life time is estimated data. (Condition : IF=15mA, Ta=25℃ in chamber)

6) Please do not connect the other than our backlight to this output connector on the PCB.

directly and separately from the output on the power source. If the common wire are used for

and backlight driving circuit, a flicker might be occurred due to a ripple between the both

circuit.

Right

Wrong

Output terminal

Power supply

(Customer side)

LCD

PCB

GNDB

GND

Output terminal

Power supply

(Customer side)

LCD

PCB

GNDB

GND