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LTC3404IMS8 PDF预览

LTC3404IMS8

更新时间： 2024-02-03 05:33:33
品牌 Logo 应用领域
凌特 - Linear 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
页数 文件大小 规格书
16页 198K
描述
1.4MHz High Efficiency Monolithic Synchronous Step-Down Regulator

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中文翻译

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LTC3404IMS8 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：TSSOP, TSSOP8,.19
针数：8Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.12Is Samacsys：N
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：6 V
最小输入电压：2.65 V标称输入电压：3.6 V
JESD-30 代码：S-PDSO-G8JESD-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：85 °C最低工作温度：-40 °C
最大输出电流：1.5 A封装主体材料：PLASTIC/EPOXY
封装代码：TSSOP封装等效代码：TSSOP8,.19
封装形状：SQUARE封装形式：SMALL OUTLINE, 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：BUCK
最大切换频率：1650 kHz技术：CMOS
温度等级：INDUSTRIAL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：30
宽度：3 mmBase Number Matches：1

LTC3404IMS8 数据手册

 浏览型号LTC3404IMS8的Datasheet PDF文件第2页浏览型号LTC3404IMS8的Datasheet PDF文件第3页浏览型号LTC3404IMS8的Datasheet PDF文件第4页浏览型号LTC3404IMS8的Datasheet PDF文件第5页浏览型号LTC3404IMS8的Datasheet PDF文件第6页浏览型号LTC3404IMS8的Datasheet PDF文件第7页 
LTC3404  
1.4MHz High Efficiency  
Monolithic Synchronous  
Step-Down Regulator  
U
FEATURES  
DESCRIPTIO  
The LTC®3404 is a high efficiency monolithic synchro-  
nous buck regulator using a constant frequency, current  
mode architecture. Supply current during operation is  
only 10μA and drops to < 1μA in shutdown. The 2.65V to  
6V input voltage range makes the LTC3404 ideally suited  
forsingleLi-Ionbattery-poweredapplications. 100%duty  
cycle provides low dropout operation, extending battery  
life in portable systems.  
■
High Efficiency: Up to 95%  
■
Very Low Quiescent Current: Only 10μA  
During Operation  
■
600mA Output Current at VIN = 3.3V  
■
2.65V to 6V Input Voltage Range  
■
1.4MHz Constant Frequency Operation  
No Schottky Diode Required  
■
■
■
■
Low Dropout Operation: 100% Duty Cycle  
Synchronizable from 1MHz to 1.7MHz  
Selectable Burst Mode® Operation or  
Pulse Skipping Mode  
0.8V Reference Allows Low Output Voltages  
Shutdown Mode Draws < 1μA Supply Current  
±2% Output Voltage Accuracy  
Current Mode Control for Excellent Line and  
Load Transient Response  
Switching frequency is internally set at 1.4MHz, allowing  
the use of small surface mount inductors and capacitors.  
For noise sensitive applications the LTC3404 can be  
externally synchronized from 1MHz to 1.7MHz. Burst  
Mode operation is inhibited during synchronization or  
when the SYNC/MODE pin is pulled low, preventing low  
frequency ripple from interfering with audio circuitry.  
■
■
■
■
■
■
Overcurrent and Overtemperature Protected  
Available in 8-Lead MSOP Package  
U
The internal synchronous switch increases efficiency and  
eliminates the need for an external Schottky diode. Low  
output voltages are easily supported with the 0.8V feed-  
back reference voltage. The LTC3404 is available in a  
space saving 8-lead MSOP package.  
APPLICATIO S  
■
Cellular Telephones  
■
Wireless and DSL Modems  
For higher input voltage (11V abs max) applications, refer  
to the LTC1877 data sheet.  
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
Burst Mode is a registered trademark of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
■
Personal Information Appliances  
■
Portable Instruments  
■
Distributed Power Systems  
■
Battery-Powered Equipment  
U
Efficiency vs Output Load Current  
TYPICAL APPLICATIO  
100  
V
= 3.6V  
IN  
95  
90  
85  
80  
75  
70  
High Efficiency Step-Down Converter  
4.7μH*  
V
= 4.2V  
V
†
IN  
IN  
7
6
1
2
5
V
OUT  
SYNC  
SW  
2.65V  
TO 6V  
3.3V  
V
= 6V  
20pF  
887k  
IN  
10μF***  
CER  
V
IN  
22μF**  
CER  
LTC3404  
RUN  
3
I
V
FB  
TH  
GND  
4
280k  
47pF  
Burst Mode OPERATION  
3404 TA01  
V
= 3.3V  
OUT  
L = 4.7μH  
*TOKO D52LC A914BYW-4R7M  
**TAIYO-YUDEN CERAMIC JMK325BJ226MM  
***TAIYO-YUDEN CERAMIC LMK325BJ106MN  
0.1  
1
10  
100  
1000  
LOAD (mA)  
†V  
CONNECTED TO V FOR 2.65V < V < 3.3V  
OUT  
IN IN  
3404 TA02  
3404fb  
1
1234567...16

中文翻译

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