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LTM4601AHVEV-PBF

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 357K
描述
12A, 28VIN DC/DC μModule with PLL, Output Tracking and Margining

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LTM4601AHVEV-PBF 数据手册

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LTM4601AHV  
12A, 28V DC/DC µModule  
IN  
with PLL, Output Tracking  
and Margining  
DESCRIPTION  
FEATURES  
The LTM®4601AHV is a complete 12A step-down switch  
mode DC/DC power supply with onboard switching  
controller, MOSFETs, inductor and all support compo-  
nents. The μModule is housed in a small surface mount  
15mm×15mm×2.8mmLGApackage. TheLTM4601AHV  
LGA package is designed with redundant mounting pads  
to enhance solder-joint strength for extended temperature  
cycling endurance. Operating over an input voltage range  
of 4.5 to 28V, the LTM4601AHV supports an output volt-  
age range of 0.6V to 5V as well as output voltage tracking  
and margining. The high efficiency design delivers 12A  
continuouscurrent(14Apeak). Onlybulkinputandoutput  
capacitors are needed to complete the design.  
n
Complete Switch Mode Power Supply  
n
Wide Input Voltage Range: 4.5V to 28V  
n
12A DC Typical, 14A Peak Output Current  
n
0.6V to 5V Output Voltage  
n
Output Voltage Tracking and Margining  
n
Redundant Mounting Pads for Enhanced Solder-  
Joint Strength  
Parallel Multiple μModulesTM for Current Sharing  
n
n
Differential Remote Sensing for Precision Regulation  
n
PLL Frequency Synchronization  
1.5% Total DC Error  
n
n
Current Foldback Protection (Disabled at Start-Up)  
n
Pb-Free (e4) RoHS Compliant Package with Gold  
Finish Pads  
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.  
n
–55°C to 125°C Operating Temperature Range  
(LTM4601AHVMPV)  
n
Ultrafast™ Transient Response  
n
Up to 95% Efficiency at 5V , 3.3V  
IN  
OUT  
n
n
n
Programmable Soft-Start  
Output Overvoltage Protection  
An onboard differential remote sense amplifier can be  
used to accurately regulate an output voltage independent  
of load current.  
Enhanced (15mm × 15mm × 2.8mm) Surface Mount  
LGA Package  
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. PolyPhase is  
a registered trademark of Linear Technology Corporation. μModule and Ultrafast are trademarks  
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.  
APPLICATIONS  
n
Telecom, Industrial and Networking Equipment  
n
Military and Avionics Systems  
TYPICAL APPLICATION  
Efficiency and Power Loss  
vs Load Current  
2.5V/12A Power Supply with 4.5V to 28V Input  
95  
90  
85  
80  
75  
70  
65  
60  
55  
50  
45  
6
5
4
3
2
1
0
12V  
IN  
CLOCK SYNC  
TRACK/SS CONTROL  
EFFICIENCY  
V
IN  
4.5V TO 28V  
V
PLLIN TRACK/SS  
V
24V  
IN  
V
2.5V  
12A  
IN  
OUT  
PGOOD  
OUT  
100pF  
POWER LOSS  
V
FB  
ON/OFF  
RUN  
COMP  
INTV  
CC  
MARG0  
MARG1  
V
OUT_LCL  
MARGIN  
CONTROL  
24V  
IN  
C
LTM4601AHV  
OUT  
C
IN  
12V  
IN  
DRV  
CC  
DIFFV  
OUT  
+
MPGM  
SGND PGND  
V
V
OSNS  
–
OSNS  
R1  
392k  
f
SET  
R
SET  
19.1k  
0
4
6
8
10  
12  
14  
2
5% MARGIN  
4601AHV TA01a  
LOAD CURRENT (A)  
4601AHV TA01b  
4601ahvf  
1
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