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參數(shù)資料
| 型號： | S1D15G10D08B000 |
| 廠商： | 愛普生（中國）有限公司 |
| 英文描述： | LCD drivers equipped with the liquid crystal drive power circuit |
| 中文描述： | 與液晶驅(qū)動電源電路配備LCD驅(qū)動器 |
| 文件頁數(shù)： | 30/64頁 |
| 文件大?。?/td> | 434K |
| 代理商： | S1D15G10D08B000 |
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S1D15G10D08B000
Rev. 1.0
EPSON
27
Fig. 8.11.3 Voltage Regulator Circuit
Rb/Ra in Equation A-1 is the resistance ratio of the built-in V
1
voltage-regulating resistance. This ratio can be varied
in 8 levels by changing parameters 2(P2) of electronic volum control command. Reference ratios of “1 + Rb/Ra” are
shown in Table 8.11.4.
Table 8.11.4 Resistance Ratio of Built-in V
2
Voltage-Regulating Resistance: Parameters and “1+
R/Ra” Ratio (For reference)
Parameter
P22
P21
0
0
0
0
1
1
1
1
1+Rb/Ra ratio
V
1
voltage value
P20
0
1
0
1
0
1
0
1
0
0
1
1
0
0
1
1
2.9032
3.1914
3.4090
3.6585
3.8793
4.0909
4.3269
4.5454
Small
Large
(B) V
1
voltage control external resistor
If you use an external resistance control model, you can set the V
1
voltage using an external resistor.
Use a semi-fixed resistor for V
1
voltage regulation.
GND
V
CSL
V
EV
(Fixed voltage source and
Electronic volume control)
V
1
VR
GND
External resistor Rb
External resistor Ra
–
+
Fig. 8.11.4 Voltage Regulator Circuit
Select the external Ra and Rb values to allow stable voltage supply by observing the V
2
voltage waveforms.
As the VR pin has a high input impedance and it is susceptible to ambient noise, the resistors and their leads must be
placed in a short distance and they must be away from the clock source.
(C) Constant Voltage Source and Electronic Volume Control Circuit
The constant voltage source generates V
REG
- the reference voltage inside the IC. You can specify one of four types
of temperature gradients with parameters of electronic volum control command. See Fig. 8.11.5.
GND
V
CSL
V
EV
(Constant voltage source +
Electronic volume controller)
V
1
Built-in Rb
Built-in Ra
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