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UCC2974PW PDF预览

UCC2974PW

更新时间: 2024-09-19 13:15:07
品牌 Logo 应用领域
德州仪器 - TI 控制器
页数 文件大小 规格书
12页 204K
描述
FLUORESCENT LIGHT CONTROLLER, 60kHz SWITCHING FREQ-MAX, PDSO16, 5.10 X 6.60 MM, TSSOP-16

UCC2974PW 技术参数

生命周期:Obsolete零件包装代码:TSSOP
包装说明:TSSOP, TSSOP16,.25针数:16
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.84
模拟集成电路 - 其他类型:FLUORESCENT LIGHT CONTROLLER控制技术:PULSE WIDTH MODULATION
最大输入电压:25 V最小输入电压:4.5 V
标称输入电压:12 VJESD-30 代码:R-PDSO-G16
长度:5 mm功能数量:1
端子数量:16最高工作温度:85 °C
最低工作温度:-40 °C封装主体材料:PLASTIC/EPOXY
封装代码:TSSOP封装等效代码:TSSOP16,.25
封装形状:RECTANGULAR封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
电源:12 V认证状态:Not Qualified
座面最大高度:1.2 mm子类别:Switching Regulator or Controllers
标称供电电压 (Vsup):12 V表面贴装:YES
切换器配置:SINGLE最大切换频率:60 kHz
技术:BICMOS温度等级:INDUSTRIAL
端子形式:GULL WING端子节距:0.65 mm
端子位置:DUAL宽度:4.4 mm
Base Number Matches:1

UCC2974PW 数据手册

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ꢀ ꢁꢁ ꢂꢃ ꢄꢅ  
ꢀ ꢁꢁ ꢆꢃ ꢄꢅ  
SLUS485A – JULY 2001 – REVISED NOVEMBER 2001  
ꢈꢎ  
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.  
ꢌꢡ  
Copyright 2001, Texas Instruments Incorporated  
ꢝꢧ  
ꢝꢡ  
ꢝ ꢡ ꢞ ꢝꢖ ꢗꢫ ꢙꢘ ꢜ ꢤꢤ ꢢꢜ ꢚ ꢜ ꢛ ꢡ ꢝ ꢡ ꢚ ꢞ ꢦ  
ꢡꢞ  
1
www.ti.com  

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