Displays
AND-TFT-7PA
Recommended Driving Conditions for Backlight
Item
Symbol
Min.
474
3
Typ.
527
6
Max.
580
8
Unit
Vrms
MA
Remarks
IL=6mA
Note 1
V
Lamp Voltage
Lamp Current
Lamp Frequency
L
I
L
P
V
40
–
55
–
80
KHz
Note 2
L
Kick-off Voltage (25º C) (Reference Value)
Kick-off Voltage (0º C) (Reference Value)
630
890
Vrms
Vrms
Note 3
S
S
V
–
–
Note 3
Note 1: In order to satisfy the quality of B/L, no matter use what kind of inverter, the output lamp current must be between Min. and Max. to avoid the
abnormal display image caused by B/L.
Note 2: The waveform of lamp driving voltage should be as close to a perfect sine wave as possible.
The kick-off times ≥ 1 sec.
Backlight Connector: JST BHSR-02VS-1, Pin No.:2, Pitch: 3.5mm
Pin No.
Symbol
VL1
VL2
Description
Input terminal (Hi voltage side)
Input terminal (Low voltage side)
Remarks
–
Note 1
1
2
Note 1: Low voltage side of backlight inverter connects with Ground of inverter circuits.
Block Diagram
Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085
Tel:408.523.8200 • Fax:408.733.1287 • sales@purdyelectronics.com • www.purdyelectronics.com
10/26/05
3
PURDY [ PURDY ELECTRONICS CORPORATION ]
