參數(shù)資料
型號(hào)： MPT57571B
廠商： Electronic Theatre Controls, Inc.
元件分類： 顯示驅(qū)動(dòng)器
英文描述： 384-CHANNEL 256-GRADATION SOURCE DRIVER FOR COLOR TFT LCDS
中文描述： 384-CHANNEL 256-GRADATION源驅(qū)動(dòng)的彩色TFT液晶顯示器
文件頁(yè)數(shù)： 28/29頁(yè)
文件大?。?/td> 350K
代理商： MPT57571B
MPT57571B
384-CHANNEL 256-GRADATION SOURCE DRIVER FOR COLOR TFT LCDS
SGLS110A – FEBRUARY 2000 – REVISED AUGUST 2000
28
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
MPT57571 low power mode
The MPT57571 has a low power mode to reduce current consumption. This mode reduces charge and
discharge currents to the load by redistributing the charge stored in the load. This makes efficient, low power
consumption operation possible.
low power mode operation
When the low power mode is selected and TP1 = H, all the outputs from OUT1 through OUT384 are shorted
within the driver. In this case, each buffer amp that drives an output is in an isolated state.
low power mode output waveform
See
Note A
TP1
OUT1
OUT384
NOTE A: When TP1 = H, the electric potential becomes a fraction of the previous output potential immediately before it was averaged out by the
output capacity. As an example, when a positive polarity output and a negative polarity output each have the same output channel, this
is considered to be a symmetrical potential with a reference of 1/2 VDD1, and all capacity values connected to the output are equal: when
TP1 = H, all outputs are 1/2 VDD1.
TP1 H width relationship with power and ac characteristics
TP1 H Width
Power
Consumption
Delay Time T
Delay Time T TP1 H
TP1 H Width
Consumption power and delay time T change with the width of TP1 H, as shown in the previous figure; these
characteristics also change with the load connected to the output. Therefore, with TP1 H width, it is necessary
to select the optimal delay time for the load.
T
TP1
Output
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