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LTM4643手册

更新时间：2019-10-09 23:13:02 大小：568K 上传用户：coofu查看TA发布的资源 标签：ltm4643 下载积分：0分 评价赚积分 （如何评价?） 打赏 收藏 评论(0) 举报

资料介绍

LTM4643器件手册，免费下载，英文版本。

部分文件列表

文件名 大小
LTM4643.pdf 568K

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LTM4643  
Ultrathin Quad µModule  
Regulator with Configurable  
3A Output Array  
FEATURES  
Quad Output Step-Down µModule® Regulator with  
The is a quad DC/DC step-down µModule  
(powermodule)regulatorwith3Aperoutput. Outputscan  
be paralleled in an array for up to ±2A capability. Included  
in the package are the switching controllers, power FETs,  
inductors and support components. Operating over an  
input voltage range of 4V to 20V or 2.375V to 20V with  
an external bias supply, the LTM4643 supports an output  
voltage range of 0.6V to 3.3V each set by a single external  
resistor. Its high efficiency design delivers 3A continuous  
output current per channel. Only bulk input and output  
capacitors are needed.  
n
3A per Output  
n
Wide Input Voltage Range: 4V to 20V  
n
2.375V to 20V with External Bias  
n
0.6V to 3.3V Output Voltage  
n
3A DC Output Current Each Channel  
n
±±.5ꢀ Total Output Voltage Regulation  
n
Current Mode Control, Fast Transient Response  
n
Parallelable for Higher Output Current  
n
Output Voltage Tracking  
n
Internal Temperature Sensing Diode Output  
n
External Frequency Synchronization  
Fault protection features include overvoltage, overcurrent  
and overtemperature protection. The LTM4643 is offered  
in a 9mm ×±5mm × ±.82mm LGA and 9mm × ±5mm ×  
2.42mmBGApackageswithSnPb(BGA)orRoHScompli-  
ant terminal finish.  
n
Overvoltage, Current and Temperature Protection  
n
9mm × ±5mm × ±.82mm LGA and 9mm × ±5mm ×  
2.42mm BGA Packages  
APPLICATIONS  
Configurable Output Array*  
n
FPGAs, GPUs and ASICs Applications  
PCIe and Backside PCB Mounting  
3A  
6A  
n
3A  
3A  
3A  
9A  
3A  
±2A  
3A  
3A  
L, LT, LTC, LTM, Linear Technology, the Linear logo, µModule, LTpowerCAD and PolyPhase  
are registered trademarks of Analog Devices, Inc. All other trademarks are the property of their  
respective owners.  
* Note 4  
TYPICAL APPLICATION  
4V to 20V Input, Quad 0.9V, 1V, 1.2V and  
1.5V Output DC/DC µModule Regulator  
1.5V Output Efficiency and  
Power Loss (Each Channel)  
CLKIN  
CLKOUT  
95  
90  
85  
80  
75  
70  
65  
60  
55  
1.6  
1.4  
1.2  
1.0  
0.8  
0.6  
0.4  
0.2  
0.0  
V
IN1  
V
4V to 20V  
1.5V/3A  
OUT1  
FB1  
PGOOD1  
22µF  
×2  
SVIN1  
RUN1  
47µF  
4V  
40.2k  
60.4k  
25V  
LTM4643  
V
V
1.2V/3A  
IN2  
OUT2  
FB2  
SVIN2  
RUN2  
47µF  
4V  
PGOOD2  
V
IN3  
V
1V/3A  
OUT3  
SVIN3  
RUN3  
FB3  
PGOOD3  
47µF  
4V  
90.9k  
121k  
V
V
= 5V  
= 12V  
IN  
IN  
V
IN4  
V
0.9V/3A  
OUT4  
FB4  
PGOOD4  
SVIN4  
RUN4  
47µF  
4V  
0
0.5  
1
1.5  
2
2.5  
3
LOAD CURRENT (A)  
TEMP SGND GND  
4643 TA01b  
4643 TA01a  
NOT ALL PINS  
ARE SHOWN  
4643fb  
1
For more information www.linear.com/LTM4643  

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