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LTM4691

更新时间： 2024-09-25 02:48:43
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
24页 1814K
描述
20VIN, Dual 5A or Single 10A Step-Down DC/DC μModule Regulator

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中文翻译

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LTM4691 数据手册

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LTM4705  
20V , Dual 5A or Single 10A Step-Down  
IN  
DC/DC µModule Regulator  
FEATURES  
DESCRIPTION  
2
The LTM®4705 is a complete dual 5A step-down switch-  
ing mode µModule® (micromodule) regulator in a tiny  
6.25mm × 7.5mm × 3.22mm BGA package. Included in  
the package are the switching controller, power MOSFETs,  
inductor and support components. Operating over an  
input voltage range of 3.1V to 20V, the LTM4705 sup-  
ports an output voltage range of 0.6V to 5.5V, set by a  
single external resistor. Its high efficiency design delivers  
dual 5A continuous output current. Only a few ceramic  
input and output capacitors are needed.  
n
Complete Solution in <1cm (Single-Sided PCB) or  
2
0.5cm (Dual-Sided PCB)  
Wide Input Voltage Range: 3.1V to 20V  
0.6V to 5.5V Output Voltage  
n
n
n
n
Dual 5A or Single 10A Output Current  
1.5ꢀ Maximum Total Output Voltage Regulation  
Error Over Load, Line and Temperature  
Current Mode Control, Fast Transient Response  
External Frequency Synchronization  
Multiphase Parallelable with Current Sharing  
Output Voltage Tracking and Soft-Start Capability  
Selectable Burst Mode® Operation  
n
n
n
n
n
n
n
n
The LTM4705 supports selectable Burst Mode operation  
and output voltage tracking for supply rail sequencing.  
Its high switching frequency and current mode control  
enable a very fast transient response to line and load  
changes without sacrificing stability.  
Overvoltage Input and Overtemperature Protection  
Power Good Indicators  
6.25mm × 7.5mm × 3.22mm BGA package  
Fault protection features include input overvoltage, output  
overcurrent and overtemperature protection.  
APPLICATIONS  
n
General Purpose Point-of-Load Conversion  
The LTM4705 is available with RoHS compliant  
terminal finish.  
n
Telecom, Networking and Industrial Equipment  
Medical Diagnostic Equipment  
n
All registered trademarks and trademarks are the property of their respective owners.  
n
Test and Debug Systems  
TYPICAL APPLICATION  
2.5V and 1.8V Dual Output DC/DC Step-Down µModule Regulator  
12V Input, Efficiency vs Load Current  
100  
PGOOD1  
PGOOD2  
95  
90  
85  
80  
75  
70  
65  
60  
V
OUT1  
V
V
V
OUT1  
IN1  
2.5V, 5A  
V
IN  
100µF  
IN2  
3.1V TO 20V  
LTM4705  
22µF  
RUN1  
RUN2  
V
OUT2  
V
OUT2  
1.8V, 5A  
100µF  
INTV  
COMP1  
COMP2  
CC  
SYNC/MODE  
TRACK/SS1  
TRACK/SS2  
FB1  
FB2  
V
V
= 2.5V  
= 1.8V  
OUT  
OUT  
19.1k  
30.1k  
FREQ  
GND  
0
1
2
3
4
5
4705 TA01a  
LOAD CURRENT (A)  
4705 TA01b  
Rev. 0  
1
Document Feedback  
For more information www.analog.com  
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