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LTC3407EMSE-2 PDF预览

LTC3407EMSE-2

更新时间： 2024-01-18 01:01:53
品牌 Logo 应用领域
凌特 - Linear 稳压器
页数 文件大小 规格书
16页 220K
描述
Dual Synchronous, 800mA, 2.25MHz Step-Down DC/DC Regulator

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中文翻译

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LTC3407EMSE-2 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Active包装说明：HTSSOP,
针数：10Reach Compliance Code：compliant
风险等级：5.24其他特性：OUTPUT VOLTAGE IS ADJUSTABLE FROM 0.6V TO 5V
模拟集成电路 - 其他类型：DUAL SWITCHING CONTROLLER控制模式：CURRENT-MODE
最大输入电压：5.5 V最小输入电压：2.5 V
标称输入电压：3.6 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：85 °C
最低工作温度：-40 °C最大输出电流：1.6 A
封装主体材料：PLASTIC/EPOXY封装代码：HTSSOP
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表面贴装：YES
切换器配置：BUCK最大切换频率：2700 kHz
温度等级：INDUSTRIAL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 mm

LTC3407EMSE-2 数据手册

 浏览型号LTC3407EMSE-2的Datasheet PDF文件第2页浏览型号LTC3407EMSE-2的Datasheet PDF文件第3页浏览型号LTC3407EMSE-2的Datasheet PDF文件第4页浏览型号LTC3407EMSE-2的Datasheet PDF文件第5页浏览型号LTC3407EMSE-2的Datasheet PDF文件第6页浏览型号LTC3407EMSE-2的Datasheet PDF文件第7页 
LTC3407-2  
Dual Synchronous, 800mA,  
2.25MHz Step-Down  
DC/DC Regulator  
U
DESCRIPTIO  
FEATURES  
The LTC®3407-2 is a dual, constant frequency, synchro-  
nous step down DC/DC converter. Intended for low power  
applications, it operates from 2.5V to 5.5V input voltage  
range and has a constant 2.25MHz switching frequency,  
allowing the use of tiny, low cost capacitors and inductors  
with a profile ≤1.2mm. Each output voltage is adjustable  
from 0.6V to 5V. Internal synchronous 0.35Ω, 1.2A power  
switches provide high efficiency without the need for  
external Schottky diodes.  
■
High Efficiency: Up to 95%  
■
Very Low Quiescent Current: Only 40µA  
■
2.25MHz Constant Frequency Operation  
■
High Switch Current: 1.2A on Each Channel  
■
No Schottky Diodes Required  
■
Low RDS(ON) Internal Switches: 0.35Ω  
■
Current Mode Operation for Excellent Line  
and Load Transient Response  
Short-Circuit Protected  
■
■
Low Dropout Operation: 100% Duty Cycle  
A user selectable mode input is provided to allow the user  
to trade-off noise ripple for low power efficiency. Burst  
Mode® operation provides high efficiency at light loads,  
while Pulse Skip Mode provides low noise ripple at light  
loads.  
■
Ultralow Shutdown Current: IQ < 1µA  
■
Output Voltages from 5V down to 0.6V  
■
Power-On Reset Output  
■
Externally Synchronizable Oscillator  
■
Small Thermally Enhanced MSOP and 3mm × 3mm  
To further maximize battery life, the P-channel MOSFETs  
are turned on continuously in dropout (100% duty cycle),  
and both channels draw a total quiescent current of only  
40µA. In shutdown, the device draws <1µA.  
DFN Packages  
U
APPLICATIO S  
■
PDAs/Palmtop PCs  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Burst Mode is a registered trademark of Linear Technology Corporation.  
■
Digital Cameras  
■
Cellular Phones  
■
Portable Media Players  
■
PC Cards  
■
Wireless and DSL Modems  
U
TYPICAL APPLICATIO  
V
= 2.5V*  
TO 5.5V  
LTC3407-2 Efficiency Curve  
IN  
R5  
100  
C1  
100k  
10µF  
RUN2  
V
RUN1  
POR  
IN  
95  
90  
85  
80  
75  
70  
65  
60  
2.5V  
MODE/SYNC  
RESET  
1.8V  
LTC3407-2  
L2  
L1  
2.2µH  
2.2µH  
V
= 2.5V  
OUT2  
AT 800mA  
V
= 1.8V  
OUT1  
SW2  
SW1  
AT 800mA  
C5, 22pF  
C4, 22pF  
V
V
FB1  
FB2  
R4  
887k  
R2  
604k  
GND  
C3  
10µF  
C2  
10µF  
V
= 3.3V  
R3  
280k  
R1  
301k  
IN  
Burst Mode OPERATION  
NO LOAD ON OTHER CHANNEL  
1
10  
100  
1000  
3407 TA01  
C1, C2, C3: TAIYO YUDEN JMK316BJ106ML  
L1, L2: MURATA LQH32CN2R2M33  
LOAD CURRENT (mA)  
*V CONNECTED TO V FOR V ≤ 2.8V  
OUT  
IN IN  
3407 TA02  
Figure 1. 2.5V/1.8V at 800mA Step-Down Regulators  
sn34072 34072fs  
1
1234567...16

中文翻译

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