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LTM4603IV-PBF

更新时间： 2024-11-30 05:44:07
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
24页 340K
描述
6A DC/DC μModule with PLL, Output Tracking and Margining

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中文翻译

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LTM4603IV-PBF 数据手册

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LTM4603/LTM4603-1  
6A DC/DC µModule  
with PLL, Output Tracking  
and Margining  
U
DESCRIPTIO  
FEATURES  
The LTM®4603 is a complete 6A 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 LTM4603 supports an  
outputvoltagerangeof0.6Vto5Vaswellasoutputvoltage  
tracking and margining. The high efficiency design deliv-  
ers 6A continuous current (8A 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  
■
6A DC Typical, 8A Peak Output Current  
■
0.6V to 5V Output Voltage  
■
Output Voltage Tracking and Margining  
■
Remote Sensing for Precision Regulation  
(LTM4603 Only)  
■
Typical Operating Frequency: 1MHz  
■
PLL Frequency Synchronization  
■
1.5% Regulation  
■
Current Foldback Protection (Disabled at Start-Up)  
The low profile (2.8mm) and light weight (1.73g) package  
easily mounts on the 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.  
■
Pin Compatible with the LTM4601  
■
Pb-Free (e4) RoHS Compliant Package with Gold  
Finish Pads  
■
Ultrafast Transient Response  
■
Current Mode Control  
■
Up to 93% Efficiency at 5V , 3.3V  
IN  
OUT  
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 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  
LTM4603-1.TheLTM4603/LTM4603-1arepincompatible  
with the 12A LTM4601/LTM4601-1.  
■
■
■
Programmable Soft-Start  
Output Overvoltage Protection  
Small Footprint, Low Profile (15mm × 15mm ×  
2.8mm) SurfaceUMount LGA Package  
APPLICATIO S  
■
Telecom and Networking Equipment  
■
Servers  
, LT, LTC, LTM 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.  
■
Industrial Equipment  
Point of Load Regulation  
■
U
TYPICAL APPLICATIO  
Efficiency vs Load Current with 12VIN  
1.5V/6A Power Supply with 4.5V to 20V Input  
1.00  
0.95  
0.90  
0.85  
0.80  
0.75  
0.70  
0.65  
CLOCK SYNC  
TRACK/SS CONTROL  
V
IN  
4.5V TO 20V  
V
IN  
PLLIN TRACK/SS  
V
1.5V  
6A  
OUT  
PGOOD  
V
OUT  
100pF  
V
FB  
ON/OFF  
RUN  
MARG0  
MARG1  
MARGIN  
CONTROL  
COMP  
12V , 1.2V  
IN  
C
OUT  
OUT  
OUT  
OUT  
OUT  
OUT  
LTM4603  
0.60  
0.55  
0.50  
0.45  
0.40  
C
IN  
12V , 1.5V  
INTV  
V
IN  
CC  
OUT_LCL  
12V , 1.8V  
IN  
13.3k  
DRV  
DIFFV  
CC  
OUT  
+
12V , 2.5V  
IN  
MPGM  
SGND PGND  
V
V
OSNS  
12V , 3.3V  
IN  
–
12V , 5V  
IN  
OSNS  
OUT  
392k  
f
SET  
0
2
3
4
5
6
7
1
5% MARGIN  
OUTPUT CURRENT (A)  
4603 TA01a  
4603 TA01b  
4603f  
1
1234567...24

中文翻译

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