LH1594 SHARP [Sharp Electrionic Components], LH1594 Datasheet - Page 15

• Manufacturer Part Number: LH1594
• Description: 80-Segment and 17-Common Outputs LCD Driver IC with A Built-in CGROM
• Manufacturer: SHARP [Sharp Electrionic Components]

2.15. Booster Circuit
Placing capacitor C
and across CAP
and V
V
V
Placing C
together pins CAP
on V
Since the booster circuit uses the clock derived
SS
OUT
three times and outputs the boosted voltage to
OUT
pin.
SS
pin to two times the input voltage.
boosts the voltage coming from V
1
across CAP
2
+ and CAP
1
+ and CAP
1
V
V
EE
SS
across CAP
1
+ and CAP
= 3 V
= 0 V
When Boosted Two Times
2
– and across V
V
2
OUT
+ limits the output
1
= 6 V
1
+ and CAP
– and shorting
EE
and
OUT
1
–
15
from the internal oscillation circuit or external clock
as the boosting clock, the internal oscillation circuit
must be enabled, or if external clock is selected, it
must be fed to CK pin.
The output level at the V
the recommended maximum operating voltage
(11.0 V) when the voltage is boosted. If this value
is exceeded, the operation of the LH1594/LH1595
are not covered by warranty.
V
V
EE
SS
= 3 V
= 0 V
When Boosted Three Times
V
OUT
= 9 V
OUT
pin does not exceed
LH1594/LH1595