ST7578
Liquid Crystal Driver Power Circuit
The Power Supply circuits generate the voltage levels necessary to drive liquid crystal driver circuits with low power
consumption and the fewest components. There are voltage converter circuits, voltage regulator circuits, and voltage
follower circuits. They are controlled by power control instruction.
External Power Components
The recommended external power components need only 2 capacitors. The detailed values of these two capacitors are
determined by the panel size and loading.
IC Internal
IC External
V0
V0
Generator
C2
R1
VG
VG
Grnerator
C1
VDD2
VSS
C1: 0.1uF~1.0uF
(Non-Polar/6V)
VSS
XV0
C2: 0.1uF~1.0uF
(Non-Polar/16V)
XV0
Generator
R1: Reserve
(Default NC.)
Fig 14. Power Circuit
Ver 1.2
25/52
2007/04/30
SITRONIX [ SITRONIX TECHNOLOGY CO., LTD. ]
