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參數(shù)資料
| 型號： | S6B1741 |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | 128 SEG / 129 COM DRIVER %26 CONTROLLER FOR 4 GRAY SCALE STN LCD |
| 中文描述： | 賽格128/129 COM驅(qū)動程序及4級灰度STN液晶顯示控制器 |
| 文件頁數(shù)： | 35/78頁 |
| 文件大?。?/td> | 472K |
| 代理商： | S6B1741 |
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128SEG/129COM DRIVER & CONTROLLER FOR STN LCD
S6B1741
31
Voltage Regulator Circuits
The function of the internal Voltage Regulator circuits is to determine liquid crystal operating voltage, V0, by
adjusting resistors, Ra and Rb, within the range of |V0| < |VOUT|. Because VOUT is the operating voltage of
operational-amplifier circuits shown in figure 19, it is necessary to be applied internally or externally.
For the Eq.1, we determine V0 by Ra, Rb and V
EV
. The Ra and Rb are connected internally or externally by INTRS
pin. And V
EV
called the voltage of electronic volume is determined by Eq.2, where the parameter
α
is the value
selected by instruction, "Set Reference Voltage Register", within the range 0 to 63. V
REF
voltage at
Ta= 25
°
C is shown in Table 12.
V0 = (1 + Rb
Ra ) x V
EV
[V] ------ (Eq.1)
V
EV
= (1 - (63 -
α
)
210
) x V
REF
[V] ------ (Eq.2)
Table 12 . V
REF
Voltage at Ta = 25
°
C
REF
Temp. coefficient
-0.125%/
°
C
V
REF
[ V ]
1
2.1
0
External input
VEXT
GND
Ra
Vss
V0
VR
V
EV
+
-
Rb
VOUT
Figure 21. Internal Voltage Regulator Circuit
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| S6B2104 | 80CH SEGMENT DRIVER FOR DOT MATRIX LCD |
| S6B33B2 | 132 RGB Segment & 162 Common Driver For 65,536 Color STN LCD |
| S6B33B2A01-B0CY | 132 RGB Segment & 162 Common Driver For 65,536 Color STN LCD |
| S6B33B2A02-B0CY | 132 RGB Segment & 162 Common Driver For 65,536 Color STN LCD |
| S6B33B2A03-B0CY | 132 RGB Segment & 162 Common Driver For 65,536 Color STN LCD |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| S6B2086X01-T0RA | 制造商:Samsung SDI 功能描述:Q# AG2086 |
| S6B2104 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:80CH SEGMENT DRIVER FOR DOT MATRIX LCD |
| S6B2-6VDC | 制造商:Allied Controls Incorporated 功能描述: |
| S6B3-12VDC | 制造商:Allied Controls Incorporated 功能描述: |
| S6B33A2 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:128 RGB Segment & 129 Common Driver For 4,096 Color STN LCD |
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