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UCC3974PW

更新时间： 2024-09-21 02:58:35
品牌 Logo 应用领域
德州仪器 - TI /
页数 文件大小 规格书
12页 204K
描述
DUAL COLD CATHODE FLUORESCENT LAMP CONTROLLER

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中文翻译

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UCC3974PW 数据手册

 浏览型号UCC3974PW的Datasheet PDF文件第2页浏览型号UCC3974PW的Datasheet PDF文件第3页浏览型号UCC3974PW的Datasheet PDF文件第4页浏览型号UCC3974PW的Datasheet PDF文件第5页浏览型号UCC3974PW的Datasheet PDF文件第6页浏览型号UCC3974PW的Datasheet PDF文件第7页 
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SLUS485A – JULY 2001 – REVISED NOVEMBER 2001  
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FEATURES  
APPLICATIONS  
D
D
D
D
Synchronous or Nonsynchronous Operation  
Dual Output and Control Stages  
BiCMOS Technology  
D
D
D
Portable PCs  
Desktop LCD Monitors  
Internet Appliances  
Accurate Current Control with 2-mA Typical  
Supply Current  
DESCRIPTION  
D
D
D
D
Analog or Digital Low-Frequency Dimming  
Capability  
Design goals for a cold cathode fluorescent lamp  
(CCFL) converter used for a liquid crystal display  
(LCD) monitor application include small size, high  
efficiency, and low cost. The UCC2974/UCC3974  
CCFL controllers provide the necessary circuit  
blocks to implement a highly efficient LCD monitor  
backlight supply in a small 16-pin TSSOP  
package. The device features two control stages  
for operating independent resonant tanks for  
multi-lamp designs. The BiCMOS controller  
typically consumes less than 2-mA of operating  
current, improving overall system efficiency.  
External parts count is minimized and system cost  
is reduced by integrating such features as dual  
PWM driver stages, open lamp protection,  
overvoltage clamp, and synchronization circuitry  
between the buck and push-pull stages. The  
device operates in both analog and low-frequency  
dimming modes.  
Open Lamp Protection with Voltage Clamp  
4.5-V to 25-V Operation  
PWM Frequencies Synchronized to External  
Resonant Tanks  
D
TSSOP-16 (PW) Package  
TYPICAL APPLICATION  
VIN  
VIN  
VIN  
UCC3974  
OUT1  
1
2
3
4
5
6
7
OUT2 16  
GND 15  
VIN  
BUCK1  
COMP1  
FB1  
BUCK2 14  
CBP 13  
COMP2 12  
FB2 11  
RC  
RD  
MODE 10  
BRIGHT  
SYNC  
8
DIM  
LFDSYNC  
9
UDG–01023  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
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Copyright 2001, Texas Instruments Incorporated  
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中文翻译

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UCC3974PW 替代型号

型号 品牌 替代类型 描述 数据表
UCC3974PWR TI

完全替代

 Dual Cold Cathode Fluorescent Lamp Controller 16-TSSOP 0 to 70
UCC3974PWG4 TI

功能相似

 FLUORESCENT LIGHT CONTROLLER, 60kHz SWITCHING FREQ-MAX, PDSO16, 5.10 X 6.60 MM, GREEN, TSS

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UCC3974PWR TI

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 		Dual Cold Cathode Fluorescent Lamp Controller 16-TSSOP 0 to 70
UCC3975 TI

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 		IC,BALLAST/BACKLIGHT CONTROLLER/DRIVER,TSSOP,8PIN,PLASTIC
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 		IC,BALLAST/BACKLIGHT CONTROLLER/DRIVER,TSSOP,8PIN,PLASTIC
UCC3975TRPW TI

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 		FLUORESCENT LIGHT CONTROLLER, 105kHz SWITCHING FREQ-MAX, PDSO8, TSSOP-8
UCC3976 TI

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