参数资料
型号: MAX753ESE+
厂商: Maxim Integrated
文件页数: 11/16页
文件大小: 0K
描述: IC CNTRLR CONTRAST 16-SOIC
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 50
显示器类型: CCFL - 冷色阴极荧光灯
电流 - 电源: 500µA
电源电压: 4 V ~ 30 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 16-SOIC(0.154",3.90mm 宽)
供应商设备封装: 16-SOIC
包装: 管件
CCFL Backlight and
LCD Contrast Controllers
Table 3. Spreadsheet Design Equations
PARAMETER
SYMBOL
MIN
TYP
MAX
CCFL Specifications
Strike Voltage (V S )
Discharging Tube Current (I L )
Discharging Tube Voltage (V L )
V S,RMS
I LAMP,RMS
V LAMP,RMS
1100
= 0.28 *
I LAMP,RMS(max)
435
1500
0.005
LCD Contrast Voltage Specifications
Bias Voltage
Output Current
V LCD
I LCD
= V LCD(max) / 2
0.0245
32.6
Royer Specifications
T1 Turns Ratio (Sec/Pri)
T1 Resonating Inductance
C9 Value
C10 Value
Royer Frequency
MAX754 Specifications
Reference Voltage
n
L MAG
C RES
C BAL
w
V REF
171
0.000045
2.2E-07
1.5E-11
= SQRT [1 / (L MAG * C RES )]
1.25
Second Volts Constant
sV
0.000008
2.4E-05
CCFL Circuit Calculations
R8 Current-Sensing Resistor
Secondary Voltage Phase vs. Tube
Voltage
T1 Center-Tap Peak Voltage
Secondary Limit Voltage
T1 Center-Tap Limit Peak Voltage
R5/R6
LCD Circuit Calculations
V IN(min) Full-Load Switching Period
R8
phi
V TAP,PK
V LIM
R OTP,RATIO
T FL
= PI() * V REF * SQRT(2) /
(2 * I LAMP,RMS(max) )
= ATAN (-I LAMP,RMS(max) /
(C BAL * w * + V LAMP,RMS )
= -SQRT(2) * I LAMP,RMS(max) /
(C BAL * w * SIN(phi)) / n
= V S,RMS(max) * 0.9
= SQRT(2) * V LIM / n
= V REF / (D25 - 0.6 - V REF )
= sV(min) / V IN(min) + sV(min) /
(V LCD(max) - V IN(min) )
L2 Inductance
L2 Peak Currrent
R4/R3
L2
R LCD,RATIO
= L2(max) * 0.8
= V REF / (V LCD(max) - V REF )
= sV(min) ^ 2 / (2 * T FL *
V LCD(max) * I LCD(min) )
= sV(max) / L2(min)
Application Circuit Operating Range
Input Voltage
V IN
= (2 / PI()) * V TAP,PK
18
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11
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MAX753ESE+ 功能描述:显示驱动器和控制器 CCFL Backlight & LCD Neg Contrast Ctlr RoHS:否 制造商:Panasonic Electronic Components 工作电源电压:2.7 V to 5.5 V 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Reel
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MAX753ESE-T 功能描述:显示驱动器和控制器 RoHS:否 制造商:Panasonic Electronic Components 工作电源电压:2.7 V to 5.5 V 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Reel
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