NT7501
Reference Power Supply Circuit for Driving LCD Panel
-When using all LCD power circuits
(Voltage converter regulator and follower)
(In case of 3X boosting circuit)
VDD
C1
C1
C1
Ra
C2
Rb
C2
C2
C2
C2
VSS
M/S
VOUT
C3+
C2+
C2-
C1+
C1-
VR
V0
V1
V2
V3
V4
-When not using voltage booster circuits
VDD
External
Power
Supply
Ra
C2
Rb
C2
C2
C2
C2
VSS
M/S
VOUT
C3+
C2+
C2-
C1+
C1-
VR
V0
V1
V2
V3
V4
When only using voltage follower
VDD
When not using the internal LCD power supply circuits
VDD
External
Power
Supply
C2
C2
C2
C2
C2
VSS
M/S
VOUT
C3+
C2+
C2-
C1+
C1-
VR
V0
V1
V2
V3
V4
*Value of External Capacitance
Item
Value
C1
1.0~4.7
µF
C2
0.47~1.0
External
Power
Supply
VSS
M/S
VOUT
C3+
C2+
C2-
C1+
C1-
VR
V0
V1
V2
V3
V4
15