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LTC3404EMS8 PDF预览

LTC3404EMS8

更新时间： 2024-01-09 12:56:23
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 242K
描述
1.4MHz High Efficiency Monolithic Synchronous Step-Down Regulator

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中文翻译

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LTC3404EMS8 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：6.85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 VJESD-30 代码：S-PDSO-G8
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：85 °C
最低工作温度：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：COMMERCIAL EXTENDED
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 mm
Base Number Matches：1

LTC3404EMS8 数据手册

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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  
Synchronizable from 1MHz to 1.7MHz  
Selectable Burst ModeTM Operation or  
Pulse Skipping Mode  
■
■
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.  
■
■
■
■
■
■
No Schottky Diode Required  
Low Dropout Operation: 100% Duty Cycle  
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  
■
■
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.  
■
Personal Information Appliances  
■
Portable Instruments  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
■
Distributed Power Systems  
Burst Mode is a trademark of Linear Technology Corporation.  
■
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  
1
1234567...16

中文翻译

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LTC3404EMS8 替代型号

型号 品牌 替代类型 描述 数据表
LTC3404EMS8#TRPBF Linear

完全替代

 LTC3404 - 1.4MHz High Efficiency Monolithic Synchronous Step-Down Regulator; Package: MSOP
LTC3404MPMS8 Linear

完全替代

 1.4MHz High Efficiency Monolithic Synchronous Step-Down Regulator

与LTC3404EMS8相关器件

型号 品牌 获取价格 描述 数据表
LTC3404EMS8#PBF Linear

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 		LTC3404 - 1.4MHz High Efficiency Monolithic Synchronous Step-Down Regulator; Package: MSOP
LTC3404EMS8#TR Linear

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 		LTC3404 - 1.4MHz High Efficiency Monolithic Synchronous Step-Down Regulator; Package: MSOP
LTC3404EMS8#TRPBF Linear

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 		LTC3404 - 1.4MHz High Efficiency Monolithic Synchronous Step-Down Regulator; Package: MSOP
LTC3404IMS8 Linear

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 		1.4MHz High Efficiency Monolithic Synchronous Step-Down Regulator
LTC3404IMS8#TR Linear

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 		LTC3404 - 1.4MHz High Efficiency Monolithic Synchronous Step-Down Regulator; Package: MSOP
LTC3404IMS8#TRPBF Linear

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 		LTC3404 - 1.4MHz High Efficiency Monolithic Synchronous Step-Down Regulator; Package: MSOP
LTC3404MPMS8 Linear

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 		1.4MHz High Efficiency Monolithic Synchronous Step-Down Regulator
LTC3404MPMS8#TR Linear

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LTC3404MPMS8#TRPBF Linear

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LTC3405 Linear Systems

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 		Standalone 250mA Li-Ion Battery Charger in 2

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