BU9706KS Datasheet, PDF (5/6 Pages) Rohm – LCD segment driver

Standard ICs
BU9706KS
CP
DI1, DI21
DO20, DO40
LOAD
O1 ~ O40
tw (CP)
tw (CP)
0.8VDD 0.8VDD
0.2VDD 0.2VDD
0.8VDD
tsLH
tsHL
thLH
thHL
0.8VDD
0.2VDD
tpLH
tpHL
0.8VDD
0.2VDD
tCL
tLC
0.8VDD 0.8VDD
tW (L)
0.2VDD
∗∗
tp (L)
DF
O1 ~ O40
0.8VDD
tp (D)
∗∗
0.2VDD
tp (D)
∗∗
∗ tp (L) and tp (D) are times required before the O1 to O40 output amplitude becomes 80% and 20% respectively.
Fig.2 AC characteristics waveform
•^{Application example}
COM1
COM16
SEG1
SEG40
D
Controller
V1
V2
V3
V4
V5
M
CL1
CL2
LCD panel (16 commons, 120 segments)
O1
DI1
DO20
DI21
O40
BU9706KS
DO40
O1
DI1
DO20
DI21
O40
BU9706KS
DO40
VDD
R
R
R
R
R
Fig.3
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