參數(shù)資料
型號: HCD66730A01
廠商: Hitachi,Ltd.
英文描述: Dot-Matrix Liquid Crystal Display Controller/Driver Supporting Japanese Kanji, Korean Font Display
中文描述: 點陣液晶顯示控制器/驅動器支持日語漢字,韓文字體顯示
文件頁數(shù): 116/131頁
文件大?。?/td> 5332K
代理商: HCD66730A01
HD66730/HD66731
115
V
CC
V1
V2
V3
V4
V5
V
CC
C1
C2
Vci
GND
V5OUT2
V5OUT3
R1
R1
R0
R1
R1
C1
C2
Vci
GND
V5OUT2
V5OUT3
R1
R1
R0
R1
R1
+
+
+
+
1
μ
F
+
1
μ
F
GND
GND
1
μ
F
1
μ
F
1
μ
F
GND
GND
(Double boosting)
(Triple boosting)
V
CC
V1
V2
V3
V4
V5
V
CC
Thermistor
Thermistor
Notes: 1.
2.
3.
4.
5.
6.
The reference voltage input (Vci) must be set below the power supply (V
CC
).
Current that flows into reference voltage input (Vci) is 2-3 times larger than the load current
flowing through bleeder resistors. Note that a reference voltage drop occurs due to the
current flowing into the Vci input when a reference voltage (Vci) is generated by resistor
division.
The amount of output voltage (V5OUT2/V5OUT3) drop of a booster circuit also increases
as the load current flowing through bleeder resistors increases. Thus, set the bleeder
resistance as large as possible (4.7 k
or greater) without affecting display picture quality.
Adjust the reference voltage input (Vci) according to the fluctuation of booster characteristics
because the output voltage (V5OUT2/V5OUT3) drop depends on the load current,
operation temperature, operation frequency, capacitance of external capacitors,
and manufacturing tolerance. Refer to Electrical Characteristics for details.
Adjust the reference voltage input (Vci) so that the output voltage (V5OUT2/V5OUT3)
after boosting will not exceed the absolute maximum rating of liquid crystal power supply
voltage (15V).
Make sure that you connect polarized capacitors correctly.
Figure 47 Example of Power Supply for Liquid Crystal Display Drive (with Internal Booster)
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