- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385549 > MAX754 (Maxim Integrated Products, Inc.) CCFL Backlight and LCD Contrast Controllers(CCFT背光和液晶顯示器對比度控制器（電源）) PDF資料下載
參數(shù)資料
| 型號： | MAX754 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | CCFL Backlight and LCD Contrast Controllers(CCFT背光和液晶顯示器對比度控制器（電源）) |
| 中文描述： | CCFL背光燈及LCD對比度控制負壓控制器 |
| 文件頁數(shù)： | 15/16頁 |
| 文件大?。?/td> | 137K |
| 代理商： | MAX754 |
M
CCFL Bac klight and
LCD Contrast Controllers
______________________________________________________________________________________
15
MAX753
6-BIT DAC
PULSE-SKIP
COMPARATOR
16
13
R4
PRESET
6-BIT COUNTER
CLK
Q3
V
DAC
LFB
7
REF
LDRV
14
LX
15
BATT
+5V INPUT
1
V
DD
3
LON
6
GND
12
PGND
2
LADJ
C1
0.22
μ
F
L2
33
μ
H
BATTERY
INPUT
D8
1N5819
NEGATIVE
LCD-BIAS
OUTPUT
ON/OFF
CONTROL
ON-TIME
LOGIC
OFF-TIME
LOGIC
R3
C2
10
μ
F
C15
1
μ
F
R19
2.2
C6
10
μ
F
35V
ALTERNATE
D8 CONNECTION
(SEE TEXT)
C4
0.22
μ
F
D3
1N5819
V
DD
Figure 8. MAX753 Negative LCD-Bias Generator
0 1
* DAC OUTPUT VOLTAGE = REF - LFB
625
635
645
2
DAC CODE
ZEROSCALE
D
MID SCALE
FULL SCALE
30 31 32
61 62 63
918
928
937
1220
1230
1240
Figure 9. MAX753 LCD DAC Transfer Function
The MAX753’s DAC transfer function is shown in Figure 9.
The following equation relates the switching regulator’s
regulated output voltage to the DAC’s voltage (REF - LFB):
The value REF - LFB (and not LFB) is specified in the
Electrical Characteristics. The most negative output
voltage occurs for the largest value of REF - LFB.
The MAX753’s combination boost converter and
charge-pump inverter was chosen over a conventional
buck-boost inverter because it allows the use of low-
cost N-channel MOSFETs instead of more expensive P-
channel ones. Additionally, its efficiency is 5% to 10%
better than a standard buck-boost inverter.
V
REF
1
R3
R4
REF
(
LFB
OUT
=
+
)
相關PDF資料 |
PDF描述 |
|---|---|
| MAX756 | 3.3V/5V/Adjustable-Output, Step-Up DC-DC Converters(可調(diào),高效率,步升DC-DC變換器) |
| MAX757 | 3.3V/5V/Adjustable-Output, Step-Up DC-DC Converters(可調(diào),高效率,步升DC-DC變換器) |
| MAX7572 | Complete High Speed CMOS 12Bits ADC(單通道，3μs,帶基準源12位ADC) |
| MAX162 | CMOS 12Bits ADC(單通道，5μs,帶基準源12位ADC) |
| MAX7581 | CMOS 8Bits 8 Channel DAS(CMOS 8 位8通道數(shù)據(jù)采集系統(tǒng)) |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX-754-1205AP | 功能描述:線性和開關式電源 MAX750 SERIES MULTI OUTPT PWR SUPPLY 12V RoHS:否 制造商:TDK-Lambda 產(chǎn)品:Switching Supplies 開放式框架/封閉式:Enclosed 輸出功率額定值:800 W 輸入電壓:85 VAC to 265 VAC 輸出端數(shù)量:1 輸出電壓（通道 1）:20 V 輸出電流（通道 1）:40 A 商用/醫(yī)用: 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風格:Rack 長度: 寬度: 高度: |
| MAX-754-1205G | 功能描述:PWR/PWR SUPPLY QUAD OUTPUT 750W RoHS:是 類別:電源 - 外部/內(nèi)部（非板載） >> AC DC 轉(zhuǎn)換器 系列:MAX-750 產(chǎn)品培訓模塊:MP Modular-Configurable AC-DC Power Supply 特色產(chǎn)品:Configurable Power Supplies 標準包裝:1 系列:MP |
| MAX-754-1205P | 制造商:SLPOWER 制造商全稱:SL Power Electronics 功能描述:MAX-750 Multiple Output |
| MAX-754-1252 | 制造商:SLPOWER 制造商全稱:SL Power Electronics 功能描述:700, 750 WATTS MULTIPLE OUTPUT |
| MAX7545AKCWP | 制造商:Maxim Integrated Products 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復。