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LTC3427 PDF预览

LTC3427

更新时间: 2024-01-23 14:32:26
品牌 Logo 应用领域
凌特 - Linear 转换器
页数 文件大小 规格书
12页 200K
描述
500mA, 1.25MHz Synchronous Step-Up DC/DC Converter in 2mm × 2mm DFN Package

LTC3427 技术参数

是否Rohs认证: 符合生命周期:Transferred
零件包装代码:DFN包装说明:HVSON, SOLCC6,.08,20
针数:6Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.15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:5 V最小输入电压:1.8 V
标称输入电压:2.4 VJESD-30 代码:S-PDSO-N6
JESD-609代码:e3长度:2 mm
湿度敏感等级:1功能数量:1
端子数量:6最高工作温度:70 °C
最低工作温度:最大输出电流:0.5 A
封装主体材料:PLASTIC/EPOXY封装代码:HVSON
封装等效代码:SOLCC6,.08,20封装形状:SQUARE
封装形式:SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度(摄氏度):260
认证状态:Not Qualified座面最大高度:0.8 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:1500 kHz
技术:CMOS温度等级:COMMERCIAL
端子面层:Matte Tin (Sn)端子形式:NO LEAD
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:2 mm
Base Number Matches:1

LTC3427 数据手册

 浏览型号LTC3427的Datasheet PDF文件第2页浏览型号LTC3427的Datasheet PDF文件第3页浏览型号LTC3427的Datasheet PDF文件第4页浏览型号LTC3427的Datasheet PDF文件第5页浏览型号LTC3427的Datasheet PDF文件第6页浏览型号LTC3427的Datasheet PDF文件第7页 
LTC3427  
500mA, 1.25MHz  
Synchronous Step-Up  
DC/DC Converter in  
2mm × 2mm DFN Package  
U
FEATURES  
DESCRIPTIO  
The LTC®3427 is the industry’s first high efficiency, fixed  
frequency, step-up DC/DC converter with true output  
disconnect in a 6-lead 2mm × 2mm DFN package. Requir-  
ing minimal external components, the LTC3427 operates  
from an input voltage as low as 1.8V. The LTC3427  
contains an internal 0.525N-channel MOSFET switch  
and a 0.575P-channel MOSFET synchronous rectifier,  
which enables it to supply 200mA at 3.3V from a 2-cell  
alkaline battery input.  
High Efficiency: Up to 94%  
3.3V at 200mA from Two Alkaline Cells  
5V at 200mA from a Single Li-Ion Cell  
Inrush Current Limiting and Soft-Start  
Output Disconnect in Shutdown  
1.8V to 5V VIN Range  
1.8V to 5.25V VOUT Range  
1.25MHz Fixed Frequency, Low Noise PWM  
Internal Synchronous Rectifier  
Logic Controlled Shutdown (<1µA)  
The LTC3427 limits inrush current during start-up and  
provides a soft-start of VOUT. A switching frequency of  
1.25MHz minimizes solution footprint by allowing the use  
of tiny, low profile inductors and ceramic capacitors and  
produces very low VOUT ripple. The current mode PWM  
design is internally compensated, reducing external parts  
count. Anti-ringing control reduces EMI in discontinuous  
mode operation. The LTC3427 also features low shut-  
down current of under 1µA and thermal shutdown.  
Anti-Ringing Control Minimizes EMI  
Tiny External Components  
Short-Circuit Protection  
Low Profile (0.75mm × 2mm × 2mm) DFN Package  
U
APPLICATIO S  
Handheld Instruments  
Digital Cameras  
Wireless Handsets  
GPS Receivers  
Portable Medical Devices  
MP3 Players  
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
U
TYPICAL APPLICATIO  
2.4V to 3.3V Efficiency  
2-Cell Alkaline to 3.3V Synchronous Boost Converter  
100  
95  
90  
85  
80  
75  
70  
1000  
100  
10  
4.7µH  
V
IN  
1.8V TO 3.2V  
EFFICIENCY  
+
2-CELL  
ALKALINE  
2.2µF  
V
SW  
IN  
LTC3427  
V
OUT  
3.3V  
OFF ON  
SHDN  
V
OUT  
FB  
200mA  
1000k  
604k  
POWER LOSS  
4.7µF  
GND  
10  
100  
1000  
3427 TA01a  
LOAD CURRENT (mA)  
3427 TA01b  
3427fa  
1

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