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LTM4647 PDF预览

LTM4647

更新时间： 2024-02-09 11:50:08
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
34页 695K
描述
25A DC/DC Step-Down μModule Regulator

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中文翻译

获取价格

LTM4647 技术参数

是否Rohs认证： 符合生命周期：Active
零件包装代码：BGA包装说明：BGA-77
针数：77Reach Compliance Code：compliant
风险等级：2.32Base Number Matches：1

LTM4647 数据手册

 浏览型号LTM4647的Datasheet PDF文件第2页浏览型号LTM4647的Datasheet PDF文件第3页浏览型号LTM4647的Datasheet PDF文件第4页浏览型号LTM4647的Datasheet PDF文件第5页浏览型号LTM4647的Datasheet PDF文件第6页浏览型号LTM4647的Datasheet PDF文件第7页 
LTM4645  
25A DC/DC Step-Down  
µModule Regulator  
FeaTures  
DescripTion  
TheLTM®4645isa25Aoutputswitchingmodestep-down  
DC/DC µModule® (power module) regulator. Included in  
the package are the switching controller, power FETs, in-  
ductor and all supporting components. Operating over an  
input voltage range of 4.7V to 15V, the LTM4645 supports  
an output voltage range of 0.6V to 1.8V, set by a single  
external resistor. Only a few input and output capacitors  
are needed.  
n
4.7V to 15V Input Voltage Range  
n
0.6V to 1.8V Output Voltage Range  
n
25A DC Output Current  
n
1.2ꢀTotalDCOutputVoltageError(–40°Cto125°C)  
n
HighReliabilityN+1PhaseRedundancySupported  
n
InternalorExternalControlLoopCompensation  
n
Differential Remote Sense Amplifier for Precision  
Regulation  
n
Current Mode Control/Fast Transient Response  
Its high efficiency design delivers about 86% efficiency  
from 12V input to 1.0V output with 25A continuous load  
current. High switching frequency and a current-mode  
architecture enable a very fast transient response to line  
and load changes without sacrificing stability. The device  
supports frequency synchronization, programmable  
multiphase operation, N+1 phase redundancy, and output  
voltage tracking for supply rail sequencing.  
n
Multiphase Current Sharing Up to 150A  
n
Built-In Temperature Monitoring  
Selectable Pulse-Skipping, Burst Mode® Operation  
n
n
Soft-Start/Voltage Tracking  
n
Frequency Synchronization  
n
Output Overvoltage Protection  
n
Output Overcurrent Foldback Protection  
n
9mm × 15mm × 3.51mm BGA Package  
Fault protection features include overvoltage and overcur-  
rent protection. The power module is offered in a space  
saving 9mm × 15mm × 3.51mm BGA package. The  
LTM4645 is available with SnPb (BGA) or RoHS compli-  
ant terminal finish.  
applicaTions  
n
Telecom, Networking and Industrial Equipment  
Point of Load Regulation  
n
L, LT, LTC, LTM, Linear Technology, the Linear logo, Burst Mode, µModule, LTpowerCAD  
and PolyPhase are registered trademarks of Analog Devices, Inc. All other trademarks are the  
property of their respective owners.  
Typical applicaTion  
Efficiency vs Output Current  
at 1V Output  
12VIN, 1VOUT, 25A DC/DC µModule Regulator  
100  
95  
4.7µF  
1µF  
6.3V  
2.2Ω  
SV  
DRV  
INTV  
90  
85  
IN  
CC  
CC  
V
IN  
V
IN  
6V TO 15V  
22µF  
25V  
×2  
HIZB  
FREQ  
LTM4645  
80  
75  
70  
65  
60  
V
OUT  
1V  
V
OUT  
+
25A  
43.2k  
V
V
47pF  
COMPa  
COMPb  
OSNS  
V
FB  
–
100µF  
6.3V  
×4  
TRACK/SS  
OSNS  
90.9k  
5V INPUT  
12V INPUT  
0.1µF  
SGND GND  
4645 TA01a  
10  
15  
20  
25  
0
5
PINS NOT USED IN THIS CIRCUIT:  
LOAD CURRENT (A)  
CLKOUT, MODE/PLLIN, PGOOD,  
+
–
4645 TA01b  
PHASMD, PWM, RUN, SW, TEMP , TEMP  
4645f  
1
For more information www.linear.com/LTM4645  
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中文翻译

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