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LT1946AEMS8E#TRPBF PDF预览

LT1946AEMS8E#TRPBF

更新时间: 2024-10-03 20:53:47
品牌 Logo 应用领域
凌特 - Linear 开关光电二极管
页数 文件大小 规格书
12页 332K
描述
LT1946A - 2.7MHz Boost DC/DC Converter with 1.5A Switch and Soft-Start; Package: MSOP; Pins: 8; Temperature Range: -40°C to 85°C

LT1946AEMS8E#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:HTSSOP,
针数:8Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.19模拟集成电路 - 其他类型:SWITCHING REGULATOR
控制模式:CURRENT-MODE控制技术:PULSE WIDTH MODULATION
最大输入电压:16 V最小输入电压:2.6 V
标称输入电压:3 VJESD-30 代码:S-PDSO-G8
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:8最高工作温度:70 °C
最低工作温度:最大输出电流:3.1 A
封装主体材料:PLASTIC/EPOXY封装代码:HTSSOP
封装形状:SQUARE封装形式:SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
峰值回流温度(摄氏度):250认证状态:Not Qualified
座面最大高度:1.1 mm表面贴装:YES
切换器配置:BOOST最大切换频率:3100 kHz
温度等级:COMMERCIAL端子面层:Matte Tin (Sn)
端子形式:GULL WING端子节距:0.65 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:3 mmBase Number Matches:1

LT1946AEMS8E#TRPBF 数据手册

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LT1946A  
2.7MHz Boost DC/DC  
Converter with 1.5A Switch  
and Soft-Start  
U
FEATURES  
DESCRIPTIO  
1.5A, 36V Internal Switch  
The LT®1946A is a fixed frequency step-up DC/DC con-  
verter containing an internal 1.5A, 36V switch. Capable of  
generating 12V at 430mA from a 5V input, the LT1946A is  
ideal for powering large TFT-LCD panels. The LT1946A  
switches at 2.7MHz, allowing the use of tiny, low profile  
inductors and low value ceramic capacitors. Loop com-  
pensationcanbeeitherinternalorexternal, givingtheuser  
flexibility in setting loop compensation and allowing opti-  
mized transient response with low ESR ceramic output  
capacitors.Soft-startiscontrolledwithanexternalcapaci-  
tor which determines the input current ramp rate during  
start up. The 8-lead MSOP package and high switching  
frequency ensure a low profile overall solution less than  
1.1mm high.  
2.7MHz Switching Frequency  
Integrated Soft-Start Function  
Adjustable Output from VIN to 35V  
Low VCESAT Switch: 300mV at 1.5A (Typical)  
12V at 430mA from a 5V Input  
Small Thermally Enhanced 8-Lead MSOP Package  
U
APPLICATIO S  
TFT-LCD Bias Supplies  
GPS Receivers  
DSL Modems  
Local Power Supply  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
U
TYPICAL APPLICATIO  
L1  
D1  
Efficiency  
2.2µH  
V
OUT  
V
IN  
12V  
90  
5V  
430mA  
6
5
SW  
R1  
85  
80  
75  
70  
65  
60  
55  
50  
V
IN  
182k  
3
1
OFF ON  
SHDN  
LT1946A  
2
7
C1  
FB  
2.2µF  
C2  
2.2µF  
V
C
COMP  
GND*  
4
R
C
SS  
27.4k  
R2  
21k  
8
C
C
C
SS  
100nF  
270pF  
1946A TA01  
C1: 2.2µF, X5R or X7R, 6.3V  
C2: 2.2µF, X5R or X7R, 16V  
D1: MICROSEMI UPS120 OR EQUIVALENT  
L1: SUMIDA CR43-2R2  
* EXPOSED PAD MUST ALSO BE GROUNDED  
0
100  
200  
300  
400  
500  
LOAD CURRENT (mA)  
Figure 1. 5V to 12V, 430mA Step-Up DC/DC Converter  
1946A TA01  
sn1946a 1946afs  
1

LT1946AEMS8E#TRPBF 替代型号

型号 品牌 替代类型 描述 数据表
LT1946AEMS8E#PBF Linear

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LT1946A - 2.7MHz Boost DC/DC Converter with 1.5A Switch and Soft-Start; Package: MSOP; Pin

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