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LTC3407EDD-4 PDF预览

LTC3407EDD-4

更新时间： 2024-01-01 04:32:50
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 240K
描述
Dual Synchronous, 800mA, 2.25MHz Step-Down DC/DC Regulator

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中文翻译

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LTC3407EDD-4 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：DFN包装说明：HVSON, SOLCC10,.12,20
针数：10Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.18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 V
JESD-30 代码：S-PDSO-N10JESD-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：
最大输出电流：1.6 A封装主体材料：PLASTIC/EPOXY
封装代码：HVSON封装等效代码：SOLCC10,.12,20
封装形状：SQUARE封装形式：SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：0.8 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：2700 kHz技术：CMOS
温度等级：COMMERCIAL EXTENDED端子面层：Matte Tin (Sn)
端子形式：NO LEAD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

LTC3407EDD-4 数据手册

 浏览型号LTC3407EDD-4的Datasheet PDF文件第2页浏览型号LTC3407EDD-4的Datasheet PDF文件第3页浏览型号LTC3407EDD-4的Datasheet PDF文件第4页浏览型号LTC3407EDD-4的Datasheet PDF文件第5页浏览型号LTC3407EDD-4的Datasheet PDF文件第6页浏览型号LTC3407EDD-4的Datasheet PDF文件第7页 
LTC3407-4  
Dual Synchronous, 800mA,  
2.25MHz Step-Down  
DC/DC Regulator  
U
DESCRIPTIO  
FEATURES  
The LTC®3407-4 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 ≤1mm. 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  
■
Digital Cameras  
The LTC3407-4 is identical to the LTC3407-2 except for  
the reduced power-on reset delay time.  
, LT, LTC, LTM and Burst Mode are registered trademarks of Linear Technology  
Corporation. All other trademarks are the property of their respective owners.  
Protected by U.S. Patents, including 5481178, 6580258, 6304066, 6127815,  
6498466, 6611131  
■
Cellular Phones  
■
Portable Media Players  
■
PC Cards  
■
Wireless and DSL Modems  
U
TYPICAL APPLICATIO  
LTC3407-4 Efficiency/Power Loss Curve  
V
*
IN  
2.5V TO 5.5V  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
1
R5  
C1  
10µF  
100k  
RUN2  
MODE/SYNC  
LTC3407-4  
V
RUN1  
POR  
IN  
RESET  
0.1  
L2  
L1  
2.2µH  
2.2µH  
V
V
OUT2  
2.5V  
800mA  
OUT1  
SW2  
SW1  
1.8V  
C5, 22pF  
C4, 22pF  
800mA  
0.01  
0.001  
0.0001  
V
FB1  
V
FB2  
R4  
887k  
R2  
604k  
GND  
C3  
10µF  
C2  
10µF  
R3  
280k  
R1  
301k  
C1, C2, C3: TAIYO YUDEN JMK316BJ106ML  
L1, L2: MURATA LQH32CN2R2M33  
0.1  
1
10  
100  
1000  
3407 TA01  
*V CONNECTED TO V FOR V ≤ 2.8V  
OUT IN IN  
LOAD CURRENT (mA)  
34074 TA02  
Figure 1. 2.5V/1.8V at 800mA Step-Down Regulators  
34074f  
1
1234567...16

中文翻译

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