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LTM4601V-1

更新时间： 2024-11-29 05:44:07
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
28页 385K
描述
12A DC/DC μModules with PLL, Output Tracking and Margining

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中文翻译

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LTM4601V-1 数据手册

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LTM4601/LTM4601-1  
12A DC/DC µModules  
with PLL, Output Tracking  
and Margining  
U
DESCRIPTIO  
FEATURES  
The LTM®4601 is a complete 12A step-down switch mode  
DC/DC power supply with onboard switching controller,  
MOSFETs, inductor and all support components. The  
µModuleTM is housed in a small surface mount 15mm  
×15mm × 2.8mm LGA package. Operating over an input  
voltage range of 4.5 to 20V, the LTM4601 supports an  
outputvoltagerangeof0.6Vto5Vaswellasoutputvoltage  
trackingandmargining.Thehighefficiencydesigndelivers  
12A continuous current (14A peak). Only bulk input and  
output capacitors are needed to complete the design.  
■
Complete Switch Mode Power Supply  
■
Wide Input Voltage Range: 4.5V to 20V  
■
12A DC Typical, 14A Peak Output Current  
■
0.6V to 5V Output Voltage  
■
Output Voltage Tracking and Margining  
■
Parallel Multiple µModules for Current Sharing  
■
Differential Remote Sensing for Precision  
Regulation (LTM4601 Only)  
■
PLL Frequency Synchronization  
■
1.5ꢀ Regulation  
■
Current Foldback Protection (Disabled at Start-Up)  
The low profile (2.8mm) and light weight (1.7g) pack-  
age easily mounts in unused space on the back side of  
PC boards for high density point of load regulation. The  
µModule can be synchronized with an external clock for  
reducing undesirable frequency harmonics and allows  
PolyPhase® operation for high load currents.  
■
Pb-Free (e4) RoHS Compliant Package with Gold  
Finish Pads  
■
Ultrafast Transient Response  
■
Current Mode Control  
■
Up to 95% Efficiency at 5V , 3.3V  
IN  
OUT  
■
■
■
Programmable Soft-Start  
A high switching frequency and adaptive on-time current  
mode architecture deliver a very fast transient response  
to line and load changes without sacrificing stability. An  
onboard differential remote sense amplifier can be used  
to accurately regulate an output voltage independent of  
load current. The onboard remote sense amplifier is not  
available in the LTM4601-1.  
, LTC, LT and PolyPhase are registered trademarks of Linear Technology Corporation.  
µModule is a trademark of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
Protected by U.S. Patents, including 5481178, 5847554, 6580258, 6304066, 6476589,  
6774611, 6677210  
Output Overvoltage Protection  
Small Footprint, Low Profile (15mm × 15mm ×  
2.8mm) SurfaceUMount LGA Package  
APPLICATIO S  
■
Telecom and Networking Equipment  
■
Servers  
■
Industrial Equipment  
Point of Load Regulation  
■
U
Efficiency and Power Loss  
vs Load Current  
TYPICAL APPLICATIO  
1.5V/12A Power Supply with 4.5V to 20V Input  
95  
90  
85  
80  
75  
70  
65  
60  
55  
50  
4.0  
3.5  
3.0  
2.5  
2.0  
1.5  
1.0  
0.5  
EFFICIENCY  
5V  
IN  
CLOCK SYNC  
V
IN  
4.5V TO 20V  
TRACK/SS CONTROL  
V
PLLIN TRACK/SS  
12V  
V
1.5V  
12A  
IN  
IN  
OUT  
PGOOD  
V
OUT  
100pF  
V
FB  
12V  
IN  
ON/OFF  
RUN  
COMP  
INTV  
DRV  
MARG0  
MARG1  
V
OUT_LCL  
MARGIN  
CONTROL  
C
OUT  
5V  
IN  
LTM4601  
C
IN  
CC  
DIFFV  
CC  
OUT  
+
MPGM  
SGND PGND  
V
V
OSNS  
POWER LOSS  
–
OSNS  
R1  
392k  
f
SET  
R
SET  
40.2k  
0
2
4
6
8
10  
12  
14  
5% MARGIN  
OUTPUT CURRENT (A)  
4601 TA01a  
4601 TA01b  
4601f  
1
1234567...28

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