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LTC3401EMS PDF预览

LTC3401EMS

更新时间: 2024-01-12 13:40:42
品牌 Logo 应用领域
凌特 - Linear 转换器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升压转换器
页数 文件大小 规格书
16页 242K
描述
1A, 3MHz Micropower Synchronous Boost Converter

LTC3401EMS 技术参数

是否Rohs认证: 不符合生命周期:End Of Life
包装说明:TSSOP,Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.29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:5.5 V最小输入电压:0.5 V
标称输入电压:1.2 VJESD-30 代码:S-PDSO-G10
JESD-609代码:e0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:70 °C
最低工作温度:最大输出电流:1.6 A
封装主体材料:PLASTIC/EPOXY封装代码:TSSOP
封装形状:SQUARE封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度(摄氏度):255认证状态:Not Qualified
座面最大高度:1.1 mm表面贴装:YES
切换器配置:BOOST最大切换频率:3000 kHz
技术:CMOS温度等级:COMMERCIAL
端子面层:Tin/Lead (Sn/Pb)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:40宽度:3 mm

LTC3401EMS 数据手册

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LTC3401  
1A, 3MHz Micropower  
Synchronous Boost Converter  
U
FEATURES  
DESCRIPTIO  
Synchronous Rectification: Up to 97% Efficiency  
The LTC®3401 is a high efficiency, fixed frequency, step-  
up DC/DC converter that operates from an input voltage  
below1V.Thedeviceincludesa0.16N-channelMOSFET  
switch and a 0.18P-channel synchronous rectifier.  
Switching frequencies up to 3MHz are programmed with  
an external timing resistor and the oscillator can be  
synchronized to an external clock. An external Schottky  
diode is optional but will slightly improve efficiency.  
1A Switch Current Rating  
Fixed Frequency Operation Up to 3MHz  
Wide Input Range: 0.5V to 5.5V (Operating)  
Very Low Quiescent Current: 38µA (Burst Mode®  
Operation)  
2.6V to 5.5V Adjustable Output Voltage  
0.85V (Typ) Start-Up Voltage  
No External Schottky Diode Required (VOUT < 4.3V)  
Quiescent current is only 38µA in Burst Mode operation,  
maximizing battery life in portable applications. Burst  
Mode operation is user controlled and can be enabled by  
driving the MODE/SYNC pin high. If the MODE/SYNC pin  
has either a clock or is driven low, then fixed frequency  
switching is enabled.  
Synchronizable Switching Frequency  
Burst Mode Enable Control  
Antiringing Control Reduces Switching Noise  
PGOOD Output  
OPTI-LOOP® Compensation  
Very Low Shutdown Current: <1µA  
Small 10-Pin MSOP Package  
Other features include 1µA shutdown, antiringing control,  
open-drain power good output, thermal shutdown and  
current limit. The LTC3401 is available in the 10-lead  
thermally enhanced MSOP package. Higher current appli-  
cations should use the 2A rated LTC3402 synchronous  
boost converter. Applications that require VOUT < 2.6V  
should use the LTC3423.  
U
APPLICATIO S  
Pagers  
Handheld Instruments  
Cordless Phones  
Wireless Handsets  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Burst Mode and OPTI-LOOP are registered trademarks of Linear Technology Corporation.  
GPS Receivers  
Battery Backup  
CCFL Backlights  
U
TYPICAL APPLICATION  
All-Ceramic-Capacitor 2-Cell to 3.3V at 500mA Step-Up Converter  
L1  
4.7µH  
V
V
IN  
= 1.8V to 3V  
Efficiency  
OUT  
3.3V  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
500mA  
Burst Mode  
OPERATION  
LTC3401  
3
10  
2
4
7
8
9
5
R2  
V
SW  
OUT  
IN  
909k  
1MHz  
FIXED  
FREQUENCY  
SHDN  
V
+
2
C2  
22µF  
CELLS  
MODE/SYNC FB  
6
PGOOD  
V
C
C3  
470pF  
C1  
4.7µF  
1
R1  
549k  
C4  
4.7pF  
R
GND  
t
R
R5  
82k  
t
30.1k  
V
IN  
= 2.4V WITH SCHOTTKY  
0.1  
100  
1000  
1
10  
(mA)  
3404 TA01  
0 = FIXED FREQUENCY  
1 = Burst Mode OPERATION  
C1: TAIYO YUDEN JMK212BJ475MG  
C2: TAIYO YUDEN JMK325BJ226MM  
L1: SUMIDA CD43-4R7M  
I
OUT  
3401 TA02  
3401fa  
1

LTC3401EMS 替代型号

型号 品牌 替代类型 描述 数据表
LTC3401EMS#PBF Linear

完全替代

LTC3401 - 1A, 3MHz Micropower Synchronous Boost Converter; Package: MSOP; Pins: 10; Temper

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