NL6448AC63-01 NEC Electronics, NL6448AC63-01 Datasheet - Page 14

• Manufacturer Part Number: NL6448AC63-01
• Manufacturer: NEC Electronics

Specifications of NL6448AC63-01

• Lead Free Status / Rohs Status: Not Compliant

4.6 LUMINANCE CONTROLS
4.6.1 Luminance control methods
Note1: In case of the resistor control method and the voltage control method, noises may appear
Note2: In case BRTC signal is High or Open, the inverter will stop work when BRTP signal is
Note3: These data are the target values.
Note4: See "4.6.2 Detail of PWM timing".
Resistor control
Voltage control
Pulse width
modulation
Method
Note1
Note1
Note1
Note2
on the display image depending on the input signals timing for LCD panel signal
processing board.
fixed to Low. In this case, backlight will not turn on, even if BRTP signal is inputted again.
This is not out of order. Backlight inverter will start to work when power is supplied again.
Use PWM method, if interference noises appear on the display image!
adjustment of luminance, if it is adjusted within the rated
voltage for BRTI signal (VBI).
be 10k
resistor is the minimum luminance. Also maximum
point of the resistor is the maximum luminance.
PWSEL signal is Low and PWM signal (BRTP signal) is
inputted into BRTP terminal. The luminance is
controlled by duty ratio of BRTP signal.
Adjustment
Luminance ratio Note3
Adjustment
Luminance ratio Note3
Adjustment
Luminance ratio Note3
This control method can carry out continuation
The variable resistor (R) for luminance control should
Pulse width modulation (PWM) method works, when
GNDB
BRTI Voltage (VBI)
Duty ratio Note4
DATA SHEET EN0533EJ3V0DS00
Resistance
5%, B curve, 1/10W. Minimum point of the
10 k
0 k
Adjustment and luminance ratio
1.0V
0.3
1.0
0V
R
100% (Maximum)
100% (Maximum)
100% (Maximum)
BRTI
30% (Minimum)
30% (Minimum)
30% (Minimum)
Luminance ratio
Luminance ratio
Luminance ratio
PWSEL signal
High or Open
Low
NL6448AC63-01
BRTP signal
PWM signal
Open
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