SL20T0081 View Datasheet(PDF) - System Logic Semiconductor
Part Name
Description
MFG CO.
'SL20T0081' PDF : 56 Pages View PDF
SLS System Logic Semiconductor
SL20T0081
REFERENCE APPLICATIONS
LCD power supply configuration
Example 1 : When using internal LCD power circuit (4-time voltage boost / VCI = VDD)
VDD
VDD
MS
IRE
VCI
VSS
C1
VOUT
C4+
C3+
C1
C1-
C1
C1+
C2+
C1
C2-
VR
C2 - +
V0
C2 - +
V1
C2 - +
V2
C2 - +
V3
C2 - +
V4
VSS
(a) Using internal voltage regulator resistors (IRE=1)
MS
IRE
VCI
VSS
C1
VOUT
C4+
C3+
C1
C1-
C1
C1+
C2+
C1
C2-
Ra
VR
C2 - +
C2 - +
C2 - +
C2 - +
C2 - +
Rb
V0
V1
V2
V3
V4
VSS
VSS
(b) Using external voltage regulator resistors (IRE=0)
Example 2 : Using Internal LCD power circuit (not using voltage booster circuit)
VDD
VDD
External
Power
Supply
MS
IRE
VCI
VOUT
C4+
C3+
C1-
C1+
C2+
C2-
VR
C2 - +
V0
C2 - +
V1
C2 - +
V2
C2 - +
V3
C2 - +
V4
VSS
(c) Using internal voltage regulator resistors (IRE=1)
MS
IRE
VSS
VCI
External
Power
Supply
Ra
VOUT
C4+
C3+
C1-
C1+
C2+
C2-
VR
C2 - +
C2 - +
C2 - +
C2 - +
C2 - +
Rb
V0
V1
V2
V3
V4
VSS
(d) Using external voltage regulator resistors (IRE=0)
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