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LT1947EMS#TRPBF

更新时间: 2024-10-03 13:09:39
品牌 Logo 应用领域
凌特 - Linear 稳压器开关
页数 文件大小 规格书
8页 179K
描述
LT1947 - Adjustable Output TFT-LCD Triple Switching Regulator; Package: MSOP; Pins: 10; Temperature Range: -40°C to 85°C

LT1947EMS#TRPBF 技术参数

是否Rohs认证:符合生命周期:Transferred
零件包装代码:MSOP包装说明:TSSOP, TSSOP10,.19,20
针数:10Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.14Is Samacsys:N
模拟集成电路 - 其他类型:SWITCHING REGULATOR控制模式:CURRENT-MODE
最大输入电压:8 V最小输入电压:2.7 V
标称输入电压:3.3 VJESD-30 代码:S-PDSO-G10
JESD-609代码:e3长度:3 mm
湿度敏感等级:1功能数量:1
端子数量:10最高工作温度:70 °C
最低工作温度:最大输出电流:2 A
封装主体材料:PLASTIC/EPOXY封装代码:TSSOP
封装等效代码:TSSOP10,.19,20封装形状:SQUARE
封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度(摄氏度):260
认证状态:Not Qualified座面最大高度:1.1 mm
子类别:Switching Regulator or Controllers表面贴装:YES
切换器配置:BOOST最大切换频率:3500 kHz
温度等级:COMMERCIAL端子面层:Matte Tin (Sn)
端子形式:GULL WING端子节距:0.5 mm
端子位置:DUAL处于峰值回流温度下的最长时间:30
宽度:3 mmBase Number Matches:1

LT1947EMS#TRPBF 数据手册

 浏览型号LT1947EMS#TRPBF的Datasheet PDF文件第2页浏览型号LT1947EMS#TRPBF的Datasheet PDF文件第3页浏览型号LT1947EMS#TRPBF的Datasheet PDF文件第4页浏览型号LT1947EMS#TRPBF的Datasheet PDF文件第5页浏览型号LT1947EMS#TRPBF的Datasheet PDF文件第6页浏览型号LT1947EMS#TRPBF的Datasheet PDF文件第7页 
LT1947  
Adjustable Output TFT-LCD  
Triple Switching Regulator  
U
DESCRIPTIO  
FEATURES  
The LT®1947 is a highly integrated multiple output DC/DC  
converter designed for use in TFT-LCD panels. The device  
contains two independent switching regulators. The main  
regulator has an adjustable output voltage with an internal  
1.1A switch that can generate a boosted voltage as high as  
30V. The second regulator’s output is also adjustable up  
to 30V and can deliver 10mA for positive bias. A simple  
level-shift charge pump off the main switch node gener-  
ates the negative bias voltage. An external capacitor sets  
the delay time from AVDD’s final value to the rising edge at  
the VON pin. The 3MHz switching frequency allows the use  
of tiny low profile chip inductors and capacitors through-  
out, providing a low noise, low cost total solution with all  
components under 1.2mm in height. The device operates  
from an input range of 2.7V to 8V and is available in a  
10-lead MSOP package.  
Complete Solution Under 1.2mm  
Develops Three Outputs from a 3.3V or 5V Supply  
Externally Programmable VON Delay  
Fixed Frequency Low Noise Outputs  
All Ceramic Capacitors  
3MHz Switching Frequency  
Fast Transient Response  
Few External Components Required  
2.7V to 8V Input Range  
Adjustable AVDD and VON Voltages  
Tiny 10-Lead MSOP Package  
U
APPLICATIO S  
TFT-LCD Notebook Display Panels  
TFT-LCD Desktop Monitor Display Panels  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Digital Cameras  
Handheld Computers  
U
TYPICAL APPLICATIO  
D3  
D4  
V
OFF  
–8V  
10mA  
C4  
0.68µF  
CERAMIC  
AV  
8V  
200mA  
C6  
L1  
0.68µF  
3.3µH  
DD  
V
IN  
D1  
Start-Up Waveforms  
L2  
4.7µH  
R1  
53.6k  
V
SW1  
FB1  
C2  
IN  
VSHDN  
5V/DIV  
3.3µF  
CERAMIC  
×2  
SW2  
C1  
2.2µF  
D2  
VON  
R2  
10k  
CERAMIC  
V
LT1947  
20V/DIV  
O2  
R3  
182k  
V
ON  
C3  
220nF  
FB2  
V
GND  
24V  
ON  
AVDD  
10V/DIV  
10mA  
R4  
10k  
C
T
SHDN  
SHUTDOWN  
C5  
10nF  
VOFF  
10V/DIV  
C1: TAIYO YUDEN LMK316BJ225MD  
C2: TAIYO YUDEN LMK325BJ335MD ×2  
C3: AVX 0.22µF 25V X7R  
D1: MBRM120LT3  
D2: CMDSH-3  
D3, D4: BAT54S DUAL DIODE  
L1: SUMIDA CLQ4D103R3  
L2: TAIYO YUDEN LB2012B4R7M  
2ms/DIV  
1947 TA01.tif  
1947 F01  
C4, C6: TAIYO YUDEN LMK107BJ684MA  
Figure 1. 3.3V Powered TFT-LCD Bias Generator  
1947f  
1

LT1947EMS#TRPBF 替代型号

型号 品牌 替代类型 描述 数据表
LT1947EMS#PBF Linear

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LT1947 - Adjustable Output TFT-LCD Triple Switching Regulator; Package: MSOP; Pins: 10; Te

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