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LTC3873IDDB-5#TRPBF PDF预览

LTC3873IDDB-5#TRPBF

更新时间: 2024-02-13 10:03:44
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
16页 175K
描述
LTC3873-5 - No RSENSE Constant Frequency Current Mode Boost/Flyback/SEPIC DC/DC Controller; Package: DFN; Pins: 8; Temperature Range: -40°C to 85°C

LTC3873IDDB-5#TRPBF 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, SOLCC8,.08,20
针数:8Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.24模拟集成电路 - 其他类型:SWITCHING CONTROLLER
控制模式:CURRENT-MODE控制技术:PULSE WIDTH MODULATION
最大输入电压:9 V最小输入电压:3.5 V
标称输入电压:5 VJESD-30 代码:R-PDSO-N8
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:125 °C
最低工作温度:-40 °C标称输出电压:1.2 V
封装主体材料:PLASTIC/EPOXY封装代码:HVSON
封装等效代码:SOLCC8,.08,20封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):NOT SPECIFIED
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:SINGLE最大切换频率:240 kHz
技术:CMOS温度等级:AUTOMOTIVE
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:NOT SPECIFIED宽度:2 mm

LTC3873IDDB-5#TRPBF 数据手册

 浏览型号LTC3873IDDB-5#TRPBF的Datasheet PDF文件第2页浏览型号LTC3873IDDB-5#TRPBF的Datasheet PDF文件第3页浏览型号LTC3873IDDB-5#TRPBF的Datasheet PDF文件第4页浏览型号LTC3873IDDB-5#TRPBF的Datasheet PDF文件第5页浏览型号LTC3873IDDB-5#TRPBF的Datasheet PDF文件第6页浏览型号LTC3873IDDB-5#TRPBF的Datasheet PDF文件第7页 
LTC3873-5  
TM  
No R  
Constant  
SENSE  
Frequency Current Mode  
Boost/Flyback/SEPIC  
DC/DC Controller  
FEATURES  
DESCRIPTION  
The LTC®3873-5 is a constant frequency current mode  
controller for boost, flyback or SEPIC DC/DC converters  
designed to drive an N-channel MOSFET for high input  
and output voltage converter applications.  
n
V and V  
Limited Only by External Components  
IN  
OUT  
n
n
n
n
n
n
Internal or Programmable External Soft-Start  
Constant Frequency 200kHz Operation  
Adjustable Current Limit  
Current Sense Resistor Optional  
±±.5ꢀ Voltage Reference Accuracy  
Current Mode Operation for Excellent Line and Load  
Transient Response  
The LTC3873-5 provides ±±.5ꢀ output voltage accuracy  
and consumes only 300μA quiescent current during nor-  
mal operation and only 50μA during micropower start-up.  
Using a 9.3V internal shunt regulator, the LTC3873-5 can  
be powered from a high input voltage through a resistor  
or it can be powered directly from a low impedance DC  
voltage of 9V or less. Soft-start can be programmed using  
an external capacitor.  
n
4.±V Undervoltage Threshold for Logic Level  
MOSFET Applications  
n
n
Low Quiescent Current: 300ꢁA  
Low Profile (±mm) ThinSOTTM and (0.75mm)  
2mm × 3mm DFN Package  
The LTC3873-5 is available in 8-lead ThinSOT and 2mm  
× 3mm DFN packages.  
APPLICATIONS  
PARAMETER  
LTC3873  
8.4V  
LTC3873-5  
4.±V  
n
Telecom Power Supplies  
VCC UV+  
n
Automotive Power Supplies  
VCC UV–  
4V  
2.9V  
n
PoE Applications  
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
No R  
and ThinSOT are trademarks of Linear Technology Corporation.  
SENSE  
All other trademarks are the property of their respective owners.  
TYPICAL APPLICATION  
Efficiency and Power Loss vs Load Current  
High Efficiency 5V Input, 12V Output Boost Converter  
±00  
90  
±0000  
±nF  
4.7nF  
80  
RUN/SS  
±±.8k  
47pF  
V
IN  
I
V
CC  
TH  
70  
5V  
±000  
±00  
±0  
±0ꢁF  
22ꢁF  
LTC3873-5  
60  
50  
±0ꢁH  
IPRG  
GND  
V
±2V  
2A  
OUT  
SW  
40  
30  
20  
±0  
0
±2k  
V
NGATE  
FB  
±08k  
38735 TA0±a  
±0  
±00  
±000  
I
(mA)  
OUT  
3873 TA0±b  
38735fb  
1

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