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LTC3805HMSE-5#TRMPBF PDF预览

LTC3805HMSE-5#TRMPBF

更新时间： 2024-01-26 11:14:35
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
20页 203K
描述
IC SWITCHING CONTROLLER, 700 kHz SWITCHING FREQ-MAX, PDSO10, LEAD FREE, PLASTIC, MSOP-10, Switching Regulator or Controller

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LTC3805HMSE-5#TRMPBF 技术参数

是否无铅：不含铅是否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：10
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.08
Is Samacsys：N模拟集成电路 - 其他类型：SWITCHING CONTROLLER
控制模式：CURRENT-MODE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 V
JESD-30 代码：S-PDSO-G10JESD-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
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）：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：SINGLE最大切换频率：700 kHz
技术：CMOS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

LTC3805HMSE-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.  
n
V and V  
Limited Only by External Components  
IN  
OUT  
n
n
n
4.5V Undervoltage Lockout Threshold  
Adjustable Slope Compensation  
Adjustable Overcurrent Protection With Automatic  
Restart  
n
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  
n
n
n
n
The LTC3805-5 provides ±±.5ꢀ output voltage accuracy  
and consumes only 360μA of quiescent current during  
normal operation and only 40μA during micropower start-  
up. Using a 9.5V internal shunt regulator, the LTC3805-5  
n
n
n
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  
n
Automotive Power Supplies  
and the 3mm × 3mm DFN package.  
n
Telecom Power Supplies  
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
n
All other trademarks are the property of their respective owners.  
Isolated Electronic Equipment  
n
Auxiliary/Housekeeping Power Supplies  
n
Power over Ethernet  
TYPICAL APPLICATION  
Efficiency and Power Loss vs Load Current  
5V to 12V/1A Boost Converter  
±00  
95  
90  
85  
80  
75  
2.5  
2.0  
±.5  
±
UPS840  
4.3μH  
V
±2V  
±A  
OUT  
V
IN  
5V EFFICIENCY  
8.5V EFFICIENCY  
5V  
22μF  
×2  
±00μF  
V
CC  
ꢁUN  
GATE  
LTC3805-5  
8.5V LOSS  
±.33k  
3k  
5V LOSS  
I
OC  
TH  
±9±k  
SSFLT  
FS  
I
SENSE  
FB  
0.±μF  
20k  
470pF  
0.5  
0
SYNC GND  
±±8k  
8mΩ  
±3.7k  
38055 TA0±  
0.0±  
0.±  
±
±0  
LOAD CUꢁꢁENT (A)  
38055TA0±b  
38055fb  
1
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