Note (3) The specified power supply current is under the conditions at VDD

=3.3V, Ta = 25

± 2 ℃, DC Current and fv = 60 Hz, whereas a power dissipation check pattern below is

displayed.

8.2. BACKLIGHT UNIT

Parameter

Symbol

Value

Unit

Note

Min.

Typ.

Max.

Converter Power Supply Voltage

Vi

10.8

12.0

13.2

V

Converter Power Supply Current

Ii

(0.36)

(0.46)

(0.56)

A

@ Vi = 12V

(Duty 100%)

Backlight Power Consumption

PBL

-

(5.52)

(6.72)

W

@ Vi = 12V

(Duty 100%)

EN Control Level

Backlight on

-

2.0

3.3

5.0

V

Backlight off

0

---

0.8

V

PWM Dimming

Control Level

PWM High Level

-

2.0

3.3

5.0

V

PWM Low Level

0

-

0.15

V

PWM Dimming Control Duty Ratio

-

1

-

100

%

@200Hz

PWM Dimming Control Frequency

fPWM

190

200

20k

Hz

(2)

LED Life Time

LL

(50,000)

(70,000)

-

Hrs

(3)

Note (1) LED current is measured by utilizing a high frequency current meter as shown

below:

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