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參數資料
| 型號： | LH155N |
| 英文描述： | Industrial Control IC |
| 中文描述： | 工業(yè)控制IC |
| 文件頁數： | 22/51頁 |
| 文件大小： | 288K |
| 代理商： | LH155N |
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LH155BA
22
2.18. Booster Circuit
Setting BS register, booster circuit multiple can be
selected. Placing capacitor C
1
across CAP+ and
CAP–, across V
EE2
and V
SS
, across V
EE3
and V
SS
and across V
OUT
and V
SS
boosts four times.
Placing capacitor C
1
across CAP+ and CAP–,
across V
EE2
and V
SS
, across V
OUT
and V
SS
, and
setting V
EE3
to NC when boosting three times.
Placing C
1
across CAP+ and CAP–, across V
OUT
and V
SS
, and setting V
EE2
and V
EE3
to NC when
boosting two times.
The boosted voltage is output to V
OUT
pin.
Since the booster circuit uses the clock derived
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
OUT
pin does not exceed
the recommended maximum operating voltage
(14.0 V) when the voltage is boosted. If this value
is exceeded, the operation of the LH155BA is not
covered by warranty.
When boosting four times and three times,
placement of capacitor is as shown below.
V
EE
= 1.8 V
V
SS
= 0 V
V
OUT
= 5.4 V
When Boosted Three Times
V
EE
= 1.8 V
V
SS
= 0 V
V
OUT
= 7.2 V
When Boosted Four Times
CAP+
CAP–
V
EE2
V
EE3
V
OUT
When Boosted Four Times
CAP+
CAP–
V
EE2
V
EE3
V
OUT
When Boosted Three Times
If charge up of LCD drive voltage is not successful,
check
capacity,
voltage
temperature characteristics of external capacitor,
and select appropriate device. When charge up is
dependency
and
unsuccessful, it is advisable to charge up LCD drive
voltage step by step (x 2, x 3, x 4) by inputting
software from external microcontroller.
相關PDF資料 |
PDF描述 |
|---|---|
| LH155L | Industrial Control IC |
| LH1554P | LCD Display Driver |
| LH1554M | LCD Display Driver |
| LH1560F | 160 OUTPUT LCD SEGMENT / COMMON DRIVER |
| LH15A1 | LCD driver with built-in RAM for 256-color STN-LCDs |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LH155P | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Industrial Control IC |
| LH155R | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Industrial Control IC |
| LH1560 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver |
| LH1560F | 制造商:SHARP 制造商全稱:Sharp Electrionic Components 功能描述:160 OUTPUT LCD SEGMENT / COMMON DRIVER |
| LH1562 | 制造商:SHARP 制造商全稱:Sharp Electrionic Components 功能描述:240-output LCD Segment/Common Driver IC |
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