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参数资料
| 型号： | MAX753ESE+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 6/16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
In Figure 1, the MAX758A, L1, and D5 form a voltage-
controlled switch-mode current source. The current out
1250
1221
1191
811
782
753
402
372
343
of L1 is proportional to the voltage applied to the SS
pin. The MAX758A contains a current-mode pulse-
width-modulating buck regulator that switches at
170kHz. The voltage on the SS pin sets the switch cur-
rent limit and thus sets the current out of L1.
CCFL Current-Regulation Loop
Figure 3 shows a block diagram of the regulation loop,
which maintains a fixed CCFL average lamp current
despite changes in input voltage and lamp impedance.
This loop regulates the average value of the half-wave
rectified lamp current. The root mean square lamp cur-
rent is related to, but not equal to, the average lamp
current. Assuming a sinusoidal lamp current, select R8
0 1 2 3
14 15 16
29 30 31
as follows:
R 8 =
π V REF
DAC CODE
2 I LAMP , RMS
where V REF = 1.25V and I LAMP,RMS is the desired full-
ZERO SCALE
MID SCALE
FULL SCALE
scale root mean square lamp current.
Figure 2. CCFT DAC Transfer Function
CON
CADJ
MAX754
LOGIC AND
5-BIT COUNTER
MAX758A
FULL-SCALE = 1.250V
HALF-SCALE = 0.782V
ZERO-SCALE = 0.343V
5-BIT VOLTAGE
SS
SWITCH-MODE
VOLTAGE CONTROLLED
CURRENT SOURCE
OUTPUT DAC
I BUCK
ERROR
AMPLIFIER
CC
CENTER-TAP
ROYER
OSCILLATOR
C10
CFB
TRANSISTOR
EMITTERS
C5
R18
R8
Figure 3. CCFL Tube Current-Regulation Loop
6
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| MAX753ESE+T | 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 |
| 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 |
| MAX-754-1205AP | 功能描述:线性和开关式电源 MAX750 SERIES MULTI OUTPT PWR SUPPLY 12V RoHS:否 制造商:TDK-Lambda 产品:Switching Supplies 开放式框架/封闭式:Enclosed 输出功率额定值:800 W 输入电压:85 VAC to 265 VAC 输出端数量:1 输出电压（通道 1）:20 V 输出电流（通道 1）:40 A 商用/医用: 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:Rack 长度: 宽度: 高度: |
| MAX-754-1205G | 功能描述:PWR/PWR SUPPLY QUAD OUTPUT 750W RoHS:是 类别:电源 - 外部/内部（非板载） >> AC DC 转换器 系列:MAX-750 产品培训模块:MP Modular-Configurable AC-DC Power Supply 特色产品:Configurable Power Supplies 标准包装:1 系列:MP |
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