參數(shù)資料
型號(hào): UPD16732AN
廠(chǎng)商: NEC Corp.
英文描述: 384-OUTPUT TFT-LCD SOURCE DRIVER COMPATIBLE WITH 64-GRAY SCALES
中文描述: 384輸出的TFT - LCD源驅(qū)動(dòng)程序完全兼容64灰度
文件頁(yè)數(shù): 11/24頁(yè)
文件大小: 186K
代理商: UPD16732AN
Data Sheet S13972EJ3V0DS00
11
μ
PD16732A, 16732B
9. CURRENT CONSUMPTION REDUCTION FUNCTION
The
μ
PD16732A and 16732B have a low power control function (LPC) which can switch the bias current of the
output amplifier between two levels and a bias control function (Bcont) which can be used to finely control the bias
current.
<Low power control function (LPC)>
The bias current of the output amplifier can be switched between two levels using this pin. (Bcont: Open)
LPC = H or Open: Normal power mode
LPC = L: Low power mode
The V
DD2
of static current consumption can be reduced to two thirds of that in normal mode. Input a stable DC
current (V
DD1
/V
SS1
) to this pin.
<Bias Current Control Function (Bcont)>
It is possible to fine-control the current consumption by using the bias current control function (Bcont pin). When
using this function, connect this pin to the stabilized ground potential (V
SS2
) via an external resistor (R
EXT
). When
not using this function, leave this pin open.
Refer to the table below for the percentage of current regulation when using the bias current control function.
Figure9
1. Bias Current Control Function (Bcont)
PD16732A,16732B
μ
B
cont
LPC
R
EXT
H/L
V
SS2
Refer to the table below for the percentage of current regulation when using the bias current control function.
Talbe9
1. Current Consumption Regulation Percentage Compared to Normal Mode
Current Consumption Regulation Percentage
LPC = H
R
EXT
LPC = L
(Open)
50 k
20 k
10 k
100 %
110 %
115 %
120 %
65 %
70 %
80 %
85 %
Remark
The above current consumption regulation percentages are not product-characteristic guaranteed as they
are based on the results of simulation.
Caution
Because the low-power and bias-current control functions control the bias current in the output
amplifier and regulate the over-all current consumption of the driver IC, when this occurs, the
characteristics of the output amplifier will simultaneously change. Therefore, when using these
functions, be sure to sufficiently evaluate the picture quality.
V
DD1
= 3.3 V
V
DD2
= 8.7 V
LPC = 3.3 V/0 V
#
#
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