Interfacing And Operation; Control Basics; Power Requirements - Planar LC640.480.21-065 Operation Manual

Interfacing and Operation

Control Basics

Power Requirements

The LC640.480.21-065 display requires two power supplies: +5 Vdc for the LCD logic
and +12 Vdc for the backlight. In Table 6 below, the backlight current and power are
referenced to maximum luminance, 25 °C ambient temperature.
Table 6. Input Power
Panel
Panel voltage (nominal = 5.0V)
Absolute max. V
I (V
CC
Inverter
Inverter voltage (nominal = +12.0V)
Absolute max. voltage
Current (V
Backlight
Backlight heater voltage
Backlight heater current
Cell heater voltage
Cell heater current
CAUTION: Absolute maximum ratings are those values beyond which damage to
the device may occur.
8 LC640.480.21-065 Operations Manual (OM610-00)
CC
= 5.0V)
CC
= 8.0V, max. luminance)
INV
Symbol Min Typ
V 4.75 5.0
CC
V -0.3 –
CC
I – 470
CC
V 8.0 12.0
INV
V – –
INV
I – 1.6
INV
V 8.0 12.0
LH
I – 2.0
LH
V 8.0 12.0
LH
I – 1.0
LH
Max Units
5.25 Vdc
6.5 Vdc
640 mAdc
18.0 Vdc
20.0 Vdc
1.8 Adc
18.0 Vdc
3.0 Adc
18.0 Vdc
1.5 Adc