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LTC3805IMSE-5-TRMPBF PDF预览

LTC3805IMSE-5-TRMPBF

更新时间: 2024-02-02 12:24:13
品牌 Logo 应用领域
凌特 - Linear 控制器
页数 文件大小 规格书
20页 206K
描述
Adjustable Frequency Current Mode Flyback/ Boost/SEPIC DC/DC Controller

LTC3805IMSE-5-TRMPBF 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, TSSOP10,.19,20
针数:10Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.1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:8.9 V最小输入电压:4.15 V
标称输入电压:5 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:125 °C
最低工作温度:-40 °C封装主体材料:PLASTIC/EPOXY
封装代码:HTSSOP封装等效代码:TSSOP10,.19,20
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子类别:Switching Regulator or Controllers
表面贴装:YES切换器配置:SINGLE
最大切换频率:700 kHz技术:CMOS
温度等级:AUTOMOTIVE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:NOT SPECIFIED
宽度:3 mmBase Number Matches:1

LTC3805IMSE-5-TRMPBF 数据手册

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LTC3805-5  
Adjustable Frequency  
Current Mode Flyback/  
Boost/SEPIC DC/DC Controller  
FEATURES  
DESCRIPTION  
The LTC®3805-5 is a current mode DC/DC controller de-  
signed to drive an N-channel MOSFET in flyback, boost  
and SEPIC converter applications. Operating frequency  
and slope compensation can be programmed by external  
resistors. Programmable overcurrent sensing protects  
the converter from overload and short-circuit conditions.  
Soft-start can be programmed using an external capacitor  
and the soft-start capacitor also programs an automatic  
restart feature.  
V and V  
Limited Only by External Components  
IN  
OUT  
4.5V Undervoltage Lockout Threshold  
Adjustable Slope Compensation  
Adjustable Overcurrent Protection with Automatic  
Restart  
Adjustable Operating Frequency (70kHz to 700kHz)  
with One External Resistor  
Synchronizable to an External Clock  
±±.5ꢀ ꢁeference Accuracy  
Only ±00mV Current Sense Voltage Drop  
ꢁUN Pin with Precision Threshold and Adjustable  
Hysteresis  
Programmable Soft-Start with One External Capacitor  
Low Quiescent Current: 360μA  
Small ±0-Lead MSOP and 3mm × 3mm DFN  
The LTC3805-5 provides ±±.5ꢀ output voltage accuracy  
and consumes only 360μA of quiescent current during  
normaloperationandonly4Aduringmicropowerstart-  
up. Using a 9.5V internal shunt regulator, the LTC3805-5  
can be powered from a high V through a resistor or it  
IN  
can be powered directly from a low impedance DC voltage  
from 4.7V to 8.8V.  
APPLICATIONS  
The LTC3805-5 is available in the ±0-lead MSOP package  
and the 3mm × 3mm DFN package.  
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
Automotive Power Supplies  
Telecom Power Supplies  
Isolated Electronic Equipment  
Auxiliary/Housekeeping Power Supplies  
Power over Ethernet  
TYPICAL APPLICATION  
Efficiency and Power Loss vs Load Current  
100  
95  
90  
85  
80  
75  
2.5  
2.0  
1.5  
1
5V to 12V/1A Boost Converter  
UPS840  
4.3μH  
V
12V  
1A  
5V EFFICIENCY  
8.5V EFFICIENCY  
OUT  
V
5V  
IN  
22μF  
×2  
100μF  
V
CC  
RUN  
GATE  
8.5V LOSS  
5V LOSS  
LTC3805-5  
1.33k  
3k  
I
OC  
TH  
191k  
SSFLT  
FS  
I
SENSE  
FB  
0.1μF  
20k  
470pF  
0.5  
0
SYNC GND  
118k  
8mΩ  
13.7k  
1
10  
0.01  
0.1  
38055 TA01  
LOAD CURRENT (A)  
38055TA01b  
38055fa  
1

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