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LTC3407EDD-3

更新时间： 2024-01-23 16:31:59
品牌 Logo 应用领域
凌特 - Linear 稳压器
页数 文件大小 规格书
16页 236K
描述
Dual Synchronous, 1.8V/0.8A and 3.3V/0.8A 2.25MHz Step-Down DC/DC Regulator

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中文翻译

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LTC3407EDD-3 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：5.33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：3.3 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 mm

LTC3407EDD-3 数据手册

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LTC3407-3  
Dual Synchronous,  
1.8V/0.8A and 3.3V/0.8A  
2.25MHz Step-Down DC/DC Regulator  
U
DESCRIPTIO  
FEATURES  
The LTC®3407-3 is a dual, constant frequency, synchro-  
■
Very Low Quiescent Current: Only 40µA  
1.8V at 800mA/3.3V at 800mA  
High Efficiency: Up to 95%  
2.25MHz Constant Frequency Operation  
High Switch Current: 1.2A on Each Channel  
No Schottky Diodes Required  
Low RDS(ON) Internal Switches: 0.35Ω  
VIN: 3.3V to 5.5V  
Current Mode Operation for Excellent Line  
and Load Transient Response  
Short-Circuit Protected  
■
■
■
■
■
■
■
■
nous step down DC/DC converter. Intended for low power  
applications, it operates from 3.3V 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 ≤1.0mm. Internal synchronous 0.35Ω, 1.2A  
power switches provide high efficiency without the need  
for external Schottky diodes.  
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.  
■
■
■
■
■
■
Low Dropout Operation: 100% Duty Cycle  
Ultralow Shutdown Current: IQ < 1µA  
Power-On Reset Output  
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.  
, 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.  
Protected by U.S. Patents, including 5481178, 6580258, 6304066, 6127815, 6498466,  
6611131.  
Externally Synchronizable Oscillator  
Small Thermally UEnhanced 3mm × 3mm DFN Package  
APPLICATIO S  
■
PDAs/Palmtop PCs  
■
Digital Cameras  
■
Cellular Phones  
■
Portable Media Players  
■
PC Cards  
■
Wireless and DSL Modems  
U
TYPICAL APPLICATIO  
LTC3407-3 Efficiency/Power Loss  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
1
V
V
= 3.3V  
= 1.8V  
OUT  
OUT  
V
IN  
3.3V TO 5.5V  
10µF  
100k  
RUN2  
MODE/SYNC  
LTC3407-3  
V
RUN1  
IN  
0.1  
POR  
RESET  
2.2µH  
2.2µH  
V
V
OUT1  
OUT2  
3.3V  
V
= 3.3V  
OUT  
0.01  
0.001  
0.000  
SW2  
SW1  
1.8V  
V
= 1.8V  
OUT  
V
V
OUT1  
OUT2  
10µF  
10µF  
GND  
34073 TA01  
V
= 5V  
IN  
Burst Mode OPERATION  
NOTE: IN DROPOUT, THE OUTPUT TRACKS THE INPUT VOLTAGE  
NO LOAD ON OTHER CHANNEL  
Figure 1. 1.8V/3.3V at 800mA Step-Down Regulators  
1
10  
100  
1000  
LOAD CURRENT (mA)  
34073 TA01b  
34073fa  
1
1234567...16

中文翻译

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