參數(shù)資料
型號： NT7502
廠商： Electronic Theatre Controls, Inc.
英文描述： 65 X 132 RAM-Map LCD Controller / Driver
中文描述： 65 × 132 RAM的地圖LCD控制器/驅(qū)動器
文件頁數(shù)： 18/54頁
文件大?。?/td> 687K
代理商： NT7502
NT7502
4x step-up voltage relationships
3x step-up voltage relationships
2x step-up voltage relationships
CAP3+
CAP1-
CAP1+
N
2x step-up voltage circuit
3x step-up voltage circuit
4x step-up voltage circuit
V
SS
V
OUT
V
DD2
= 3V
V
SS
= 0V
V
OUT
= 4 X V
DD2
= 12V
V
DD2
= 3V
V
SS
= 0V
V
OUT
= 3 X V
DD2
= 9V
V
DD2
= 3V
V
SS
= 0V
V
OUT
= 2 X V
DD2
= 6V
CAP2-
CAP2+
C1
C1
CAP3+
CAP1-
CAP1+
N
V
SS
V
OUT
CAP2-
CAP2+
C1
C1
CAP3+
CAP1-
CAP1+
N
V
SS
V
OUT
CAP2-
CAP2+
C1
C1
C1
C1
C1
Figure. 7
The Voltage Regulator Circuit
The step-up voltage generated at VOUT outputs the liquid
crystal driver voltage V0 through the voltage regulator circuit
Because the NT7502 chips have an internal high-accuracy
fixed voltage power supply with a 64-level electronic volume
function and internal resistors for the V0 voltage regulator,
systems can be constructed without having to include
high-accuracy voltage regulator circuit components.
Moreover, in the NT7502, three types of thermal gradients
have
been
prepared
as
approximately –0.05%/
℃
(2) approximately –0.2%/
℃
, and
(3) external input (supplied to the V
EXT
terminal).
VREG
options:
(1)
When the V0 Voltage Regulator Internal Resistors Are
Used
Through the use of the V0 voltage regulator internal resistors
and the electronic volume function the liquid crystal power
supply voltage V0 can be controlled by commands alone
(without adding any external resistors), making it possible to
adjust the liquid crystal display brightness. The V0 voltage
can be calculated using equation A-1 over the range where
V
0
V
<
.
T
OU
V0 = ( 1+Rb/Ra)*V
EV
= ( 1+Rb/Ra)* (1-(63-
α
)/162)*V
REG
(Equation A-1)
-
+
V
EV
R
a
V
ss
V
out
R
b
V
o
V
EV
(constant voltage
supply + electronic volume)
18
相關(guān)PDF資料
PDF描述
NT7502H-BDT 65 X 132 RAM-Map LCD Controller / Driver
NT7502H-TABF1 65 X 132 RAM-Map LCD Controller / Driver
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
NT7502H-BDT 制造商:未知廠家 制造商全稱:未知廠家 功能描述:65 X 132 RAM-Map LCD Controller / Driver
NT7502H-TABF1 制造商:未知廠家 制造商全稱:未知廠家 功能描述:65 X 132 RAM-Map LCD Controller / Driver
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NT751AS12DC110V 制造商:DBLECTRO 制造商全稱:DB Lectro Inc 功能描述:Switching capacity up to 16A.
NT751AS12DC12V 制造商:DBLECTRO 制造商全稱:DB Lectro Inc 功能描述:Switching capacity up to 16A.
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